WesWorld

From 1942 onwards the Argentine Navy has a requirement to replace the three cruisers brought from Atlantis just before the SA War (Eclipse, Orca and Fortaleza).

The Naval Staff has issued the Operational -Tactical Requirement (OTR) which outlines the ship’s mission and desired characteristics. The OTR has already been sent to Naval Constructors Board and the Scientific – Technical Research Committee. The Naval Constructors Board has assigned the project assignment to Project Design Team Two responsible for Light Cruisers .

A pre-design sketch by the Project Design Team has been studied by the Naval Constructors Board and Scientific – Technical Research Committee (STRC) and evaluated for weaknesses and cost. This resulted in the Technical - Tactical Requirement (TTR) being released to refine the Project and now the Porject Number 326 has been assigned to cover all designs to meet this TTR.
The STRC has recommended opening the design to foreign firms to widen the choice available. Therefore the TTR has been released for general tenders.

Technical - Tactical Requirement for a Light Cruiser

Size and Displacement
The cruiser must be able to dock in a Type 2 dock.
Displacement must be the minimum to reduce cost.
Seakeeping must be at least 1.20 and stability 1.20 but 1.15 is the absolute minimum.

Armament
The main arament is to consist of German pattern 150mm guns (45.50kg shells) in either twin or triple mounts to a maximum of nine guns but six would be the perferred number if nine is too heavy. Given that four ships of this class will be built a different model of gun between 150 and 155mm may be offered (preferably as an alternative to the German 150mm armed design)
Ammuntion must be at least 200rpg.
The secondary armament is to consist of Argentine pattern 115mm DP guns (25.00kg shells) if possible but such guns can be omitted if it saves weight.
The AA armament is to consist of four twin 37mm (six twin if no 115mm carried) and 20mm cannon in either single or sextuple mounts
Six to eight 600mm torpedoes are required in two mounts.
If ASDIC is fitted then one rack with up to eight Depth Charges can be added to the design.

Armour
The main belt should be 75-50mm thick and ideally cover both magazines and machinery. If only the machinery has a belt then the magazines should have 75mm thick box protection.
Deck armour should be 50mm thick.
Splinter protection required for the bridge.
All barbettes or hoists should have at least 25mm thick armour (50mm for the main hoists preferred).

Performance
Speed required is at least 31kts.
Range should be between 6,500-7,000nm at 15kts cruising speed.
Provision for at-sea refulling required.
Enough misc weight should be provided for one main director, two HA directors, two torpedo directors, two to three radio-location sets for search and gunnery, one ASDIC if possible and 50 tons of growth if possible (minimum 25 tons).

All submitted designs will be will be assigned designations within the 326 series from B onwards. All submitted designs will be examined alongside the Project design from the Project Design Team by the Naval Constructors Board and the Naval Staff.

offers design below. She meets or exceeds all specifications.

1942 Specification, Argentina Light Cruiser laid down 1942

Displacement:
6,961 t light; 7,274 t standard; 8,048 t normal; 8,667 t full load

Dimensions: Length overall / water x beam x draught
557.74 ft / 557.74 ft x 55.77 ft x 18.86 ft (normal load)
170.00 m / 170.00 m x 17.00 m x 5.75 m

Armament:
8 - 5.91" / 150 mm guns (4x2 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.53" / 115 mm guns (2x4 guns), 55.12lbs / 25.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread, all raised mounts
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Anti-aircraft guns in deck mounts with hoists
on side, evenly spread
Weight of broadside 1,258 lbs / 570 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.15" / 80 mm 328.08 ft / 100.00 m 10.83 ft / 3.30 m
Ends: Unarmoured
Main Belt covers 90 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.54" / 90 mm 2.36" / 60 mm 2.76" / 70 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 0.98" / 25 mm - -
4th: 0.98" / 25 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.54" / 90 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 64,893 shp / 48,410 Kw = 32.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,393 tons

Complement:
424 - 552

Cost:
£3.869 million / $15.475 million

Distribution of weights at normal displacement:
Armament: 151 tons, 1.9 %
Armour: 1,520 tons, 18.9 %
- Belts: 472 tons, 5.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 246 tons, 3.1 %
- Armour Deck: 771 tons, 9.6 %
- Conning Tower: 31 tons, 0.4 %
Machinery: 1,695 tons, 21.1 %
Hull, fittings & equipment: 3,370 tons, 41.9 %
Fuel, ammunition & stores: 1,087 tons, 13.5 %
Miscellaneous weights: 225 tons, 2.8 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,115 lbs / 5,495 Kg = 117.7 x 5.9 " / 150 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 2.7 ft / 0.8 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.23

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 27.02 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.18 ft / 9.20 m
- Forecastle (20 %): 23.62 ft / 7.20 m
- Mid (50 %): 23.62 ft / 7.20 m (15.75 ft / 4.80 m aft of break)
- Quarterdeck (15 %): 15.75 ft / 4.80 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 20.26 ft / 6.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 87.1 %
- Above water (accommodation/working, high = better): 153.3 %
Waterplane Area: 21,161 Square feet or 1,966 Square metres
Displacement factor (Displacement / loading): 127 %
Structure weight / hull surface area: 96 lbs/sq ft or 469 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.73
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily





225 tons misc weight for electronics fit, growth, and other purposes desired.

Nice.
One small nitpick though, surely you mean 4x2 115mm rather than the 2x4 posted here!

Deschimag/Krupp offer the folliowing study for consideration

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Project 326 Design Study, Export for Argentina - Light Cruiser laid down 1942

Displacement: 7,153 t light; 7,479 t standard; 8,320 t normal; 8,993 t full load

Dimensions: Length overall / water x beam x draught

557.71 ft / 547.90 ft x 56.10 ft x 17.22 ft (normal load) [169.99 m / 167.00 m x 17.10 m x 5.25 m]

Armament:

8 - 5.91" / 150 mm guns (4x2 guns), 102.98lbs / 46.71kg shells, 1942 Model Breech loading guns in turrets (on barbettes) on centreline ends, evenly spread, 2 raised mounts – superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model Dual purpose guns in deck mounts with hoists on side ends, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1938 Model Anti-aircraft guns in deck mounts on side, evenly spread, all raised mounts
Weight of broadside 1,208 lbs / 548 kg
Shells per gun, main battery: 220
6 - 23.6" / 600 mm above water torpedoes

Armour:

Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 291.99 ft / 89.00 m 8.86 ft / 2.70 m
Ends: Unarmoured
Main Belt covers 82 % of normal length

Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
2nd: 0.98" / 25 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 0.39" / 10 mm 0.39" / 10 mm -
4th: 0.39" / 10 mm - -

Armour deck: 1.97" / 50 mm, Conning tower: 0.98" / 25 mm

Machinery:

Diesel Internal combustion motors,
Geared drive, 3 shafts, 61,243 shp / 45,688 Kw = 31.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,514 tons

Complement: 435 - 566

Cost: £3.826 million / $15.304 million

Distribution of weights at normal displacement:

Armament: 151 tons, 1.8 %
Armour: 1,339 tons, 16.1 %
- Belts: 330 tons, 4.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 187 tons, 2.3 %
- Armour Deck: 813 tons, 9.8 %
- Conning Tower: 9 tons, 0.1 %
Machinery: 1,600 tons, 19.2 %
Hull, fittings & equipment: 3,838 tons, 46.1 %
Fuel, ammunition & stores: 1,167 tons, 14.0 %
Miscellaneous weights: 225 tons, 2.7 %

Overall survivability and seakeeping ability:

Survivability (Non-critical penetrating hits needed to sink ship): 16,761 lbs / 7,603 Kg = 162.8 x 5.9 " / 150 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.53
Seaboat quality (Average = 1.00): 1.86

Hull form characteristics:

Hull has raised forecastle and transom stern
Block coefficient: 0.550
Length to Beam Ratio: 9.77: 1
'Natural speed' for length: 26.61 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 30
Bow angle (Positive = bow angles forward): 18.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.18 ft / 9.20 m
- Forecastle (20 %): 29.20 ft / 8.90 m (28.54 ft / 8.70 m aft of break)
- Mid (50 %): 27.89 ft / 8.50 m
- Quarterdeck (15 %): 19.69 ft / 6.00 m
- Stern: 20.01 ft / 6.10 m
- Average freeboard: 25.69 ft / 7.83 m

Ship space, strength and comments:

Space - Hull below water (magazines/engines, low = better): 80.8 %
- Above water (accommodation/working, high = better): 209.6 %
Waterplane Area: 22,334 Square feet or 2,075 Square metres
Displacement factor (Displacement / loading): 139 %
Structure weight / hull surface area: 92 lbs/sq ft or 447 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.33
- Overall: 1.00
Hull space for machinery, storage, and compartmentation is excellent
Room for accommodation and workspaces is excellent
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

225 tons of miscellaneous weight reserved for customer requirements including directors, electronics, ASDIC etc.

ASMAR and DCN both offer submittals. Must admit, this one was a bit of a toughie.

ASMAR's designers offer a nine-gun design (3x3) with a full-length belt, but that belt is thicker over the magazines and machinery. Due to the limitations of the design, seakeeping seems to have received the short end of the stick...

Quoted

[SIZE=3]Project 326, Argentine (Chilean design) Light Cruiser laid down 1942[/SIZE]

Displacement:
7,072 t light; 7,387 t standard; 8,028 t normal; 8,540 t full load

Dimensions: Length overall / water x beam x draught
575.23 ft / 557.74 ft x 59.06 ft x 16.40 ft (normal load)
175.33 m / 170.00 m x 18.00 m x 5.00 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
24 - 0.79" / 20.0 mm guns (6x4 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,292 lbs / 586 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 229.66 ft / 70.00 m 9.84 ft / 3.00 m
Ends: 1.97" / 50 mm 164.04 ft / 50.00 m 9.84 ft / 3.00 m
164.04 ft / 50.00 m Unarmoured ends
Main Belt covers 63 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 0.79" / 20 mm 0.59" / 15 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 66,692 shp / 49,752 Kw = 32.00 kts
Range 6,500nm at 15.00 kts
Bunker at max displacement = 1,152 tons

Complement:
423 - 551

Cost:
£4.007 million / $16.028 million

Distribution of weights at normal displacement:
Armament: 165 tons, 2.0 %
Armour: 1,479 tons, 18.4 %
- Belts: 422 tons, 5.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 185 tons, 2.3 %
- Armour Deck: 847 tons, 10.5 %
- Conning Tower: 26 tons, 0.3 %
Machinery: 1,742 tons, 21.7 %
Hull, fittings & equipment: 3,437 tons, 42.8 %
Fuel, ammunition & stores: 955 tons, 11.9 %
Miscellaneous weights: 250 tons, 3.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,688 lbs / 5,755 Kg = 123.2 x 5.9 " / 150 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 3.2 ft / 1.0 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.34
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.520
Length to Beam Ratio: 9.44 : 1
'Natural speed' for length: 27.01 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 24.61 ft / 7.50 m
- Forecastle (20 %): 21.33 ft / 6.50 m
- Mid (50 %): 18.86 ft / 5.75 m
- Quarterdeck (25 %): 18.86 ft / 5.75 m
- Stern: 18.86 ft / 5.75 m
- Average freeboard: 19.99 ft / 6.09 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.7 %
- Above water (accommodation/working, high = better): 172.1 %
Waterplane Area: 23,255 Square feet or 2,160 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 98 lbs/sq ft or 478 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weights:
- 10 tons for main director
- 20 tons for two HA directors
- 20 tons for two torpedo directors
- 15 tons for Air Search radar
- 15 tons for Surface Search radar
- 15 tons for Surface FC radar
- 10 tons for ASDIC
- 125 tons for growth
- 20 tons for climatization (further air conditioning and heating)

The French got annoyed with the slip length requirement and, uh. Dispensed with it. The French design uses pretty much the same armament setup, but on a longer, sleeker hull; a full belt is used rather than the variable thickness belt of the previous. On this design, seakeeping is higher (only .01 below the target) as is speed.

EDIT: Slightly tweaked because I belatedly realized that I'd exceeded the max L:B ratio for this size of ship.

Quoted

[SIZE=3]Project 326 Submission, Argentine (French design, Option 1) Light Cruiser laid down 1942[/SIZE]

Displacement:
7,369 t light; 7,692 t standard; 8,452 t normal; 9,059 t full load

Dimensions: Length overall / water x beam x draught
599.62 ft / 580.71 ft x 53.15 ft x 17.85 ft (normal load)
182.76 m / 177.00 m x 16.20 m x 5.44 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
24 - 0.79" / 20.0 mm guns (6x4 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,292 lbs / 586 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 426.51 ft / 130.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 113 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 0.79" / 20 mm 0.59" / 15 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 76,465 shp / 57,043 Kw = 33.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,367 tons

Complement:
439 - 572

Cost:
£4.300 million / $17.201 million

Distribution of weights at normal displacement:
Armament: 165 tons, 1.9 %
Armour: 1,531 tons, 18.1 %
- Belts: 504 tons, 6.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 194 tons, 2.3 %
- Armour Deck: 807 tons, 9.5 %
- Conning Tower: 26 tons, 0.3 %
Machinery: 1,998 tons, 23.6 %
Hull, fittings & equipment: 3,426 tons, 40.5 %
Fuel, ammunition & stores: 1,083 tons, 12.8 %
Miscellaneous weights: 250 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,830 lbs / 5,366 Kg = 114.9 x 5.9 " / 150 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.7 ft / 0.8 m
Roll period: 13.6 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.15

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.537
Length to Beam Ratio: 10.93 : 1
'Natural speed' for length: 27.21 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 25.43 ft / 7.75 m
- Mid (40 %): 23.79 ft / 7.25 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (25 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 19.98 ft / 6.09 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.9 %
- Above water (accommodation/working, high = better): 154.7 %
Waterplane Area: 22,147 Square feet or 2,058 Square metres
Displacement factor (Displacement / loading): 119 %
Structure weight / hull surface area: 93 lbs/sq ft or 454 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.95
- Longitudinal: 1.52
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Breakdown of Miscellaneous Weights:
- 10 tons for main director
- 20 tons for two HA directors
- 20 tons for two torpedo directors
- 10 tons for Air Search radar
- 10 tons for Surface Search radar
- 10 tons for Surface FC radar
- 10 tons for ASDIC
- 50 tons for growth
- 15 tons for AC

DCN also prepared a six-gun design using many of the same features (and meeting the specified length); emphasis this time was on lowering the cost.

Quoted

[SIZE=3]Project 326, Argentine (French design, Option 2) Light Cruiser laid down 1942[/SIZE]

Displacement:
6,369 t light; 6,637 t standard; 7,376 t normal; 7,968 t full load

Dimensions: Length overall / water x beam x draught
576.65 ft / 557.74 ft x 50.85 ft x 17.85 ft (normal load)
175.76 m / 170.00 m x 15.50 m x 5.44 m

Armament:
6 - 5.91" / 150 mm guns (3x2 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread, all raised mounts
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
18 - 0.79" / 20.0 mm guns (6x3 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 990 lbs / 449 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 426.51 ft / 130.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 118 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 0.79" / 20 mm 0.59" / 15 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 62,279 shp / 46,460 Kw = 32.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,331 tons

Complement:
397 - 517

Cost:
£3.540 million / $14.160 million

Distribution of weights at normal displacement:
Armament: 126 tons, 1.7 %
Armour: 1,408 tons, 19.1 %
- Belts: 501 tons, 6.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 161 tons, 2.2 %
- Armour Deck: 722 tons, 9.8 %
- Conning Tower: 24 tons, 0.3 %
Machinery: 1,627 tons, 22.1 %
Hull, fittings & equipment: 3,053 tons, 41.4 %
Fuel, ammunition & stores: 1,008 tons, 13.7 %
Miscellaneous weights: 155 tons, 2.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,419 lbs / 5,180 Kg = 110.9 x 5.9 " / 150 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 2.5 ft / 0.8 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.33

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.510
Length to Beam Ratio: 10.97 : 1
'Natural speed' for length: 26.73 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 25.43 ft / 7.75 m
- Mid (40 %): 23.79 ft / 7.25 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (25 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 19.98 ft / 6.09 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.1 %
- Above water (accommodation/working, high = better): 150.5 %
Waterplane Area: 19,837 Square feet or 1,843 Square metres
Displacement factor (Displacement / loading): 127 %
Structure weight / hull surface area: 88 lbs/sq ft or 431 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.78
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

DCN also proposes a design to exceed the required armour specifications (and, well, the slip length specifications - again).

Quoted

[SIZE=3]Project 326, Argentine (French design, Option 3) Light Cruiser laid down 1942[/SIZE]

Displacement:
7,729 t light; 8,062 t standard; 8,920 t normal; 9,606 t full load

Dimensions:[/B] Length overall / water x beam x draught
609.46 ft / 590.55 ft x 59.06 ft x 17.55 ft (normal load)
185.76 m / 180.00 m x 18.00 m x 5.35 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, evenly spread
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, all amidships, all raised mounts - superfiring
24 - 0.79" / 20.0 mm guns (4x6 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,292 lbs / 586 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 426.51 ft / 130.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 111 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 2.95" / 75 mm 2.95" / 75 mm
2nd: 1.18" / 30 mm 0.79" / 20 mm 0.98" / 25 mm
3rd: 0.79" / 20 mm 0.59" / 15 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 69,073 shp / 51,529 Kw = 32.00 kts
Range 8,250nm at 15.00 kts
Bunker at max displacement = 1,544 tons

Complement:
458 - 596

Cost:
£4.209 million / $16.835 million

Distribution of weights at normal displacement:
Armament: 165 tons, 1.8 %
Armour: 1,865 tons, 20.9 %
- Belts: 677 tons, 7.6 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 272 tons, 3.0 %
- Armour Deck: 888 tons, 10.0 %
- Conning Tower: 27 tons, 0.3 %
Machinery: 1,804 tons, 20.2 %
Hull, fittings & equipment: 3,670 tons, 41.1 %
Fuel, ammunition & stores: 1,190 tons, 13.3 %
Miscellaneous weights: 225 tons, 2.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,672 lbs / 6,655 Kg = 142.5 x 5.9 " / 150 mm shells or 1.9 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 3.2 ft / 1.0 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.34
Seaboat quality (Average = 1.00): 1.14

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.510
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 27.70 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 48
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.07 ft / 8.25 m
- Forecastle (20 %): 25.43 ft / 7.75 m
- Mid (40 %): 23.79 ft / 7.25 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (25 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 19.98 ft / 6.09 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.8 %
- Above water (accommodation/working, high = better): 167.2 %
Waterplane Area: 24,392 Square feet or 2,266 Square metres
Displacement factor (Displacement / loading): 127 %
Structure weight / hull surface area: 98 lbs/sq ft or 479 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.31
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

From Great Britain the firm of Vickers proposes a variant of the Syclla Class light cruiser which itself was designed to meet similar size and cost constraints. In addition the cruiser can carry two aircraft and a catapult.

Project 326 Vickers Submission, Great Britain Light Cruiser laid down 1942

Displacement:
7,418 t light; 7,795 t standard; 8,551 t normal; 9,156 t full load

Dimensions: Length overall / water x beam x draught
568.65 ft / 557.00 ft x 55.00 ft x 19.50 ft (normal load)
173.32 m / 169.77 m x 16.76 m x 5.94 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on side, all aft, all raised mounts - superfiring
12 - 1.57" / 40.0 mm guns (6x2 guns), 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
6 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, 4 raised mounts - superfiring
Weight of broadside 1,369 lbs / 621 kg
Shells per gun, main battery: 250
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.00" / 76 mm 360.00 ft / 109.73 m 10.00 ft / 3.05 m
Ends: Unarmoured
Main Belt covers 99 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.00" / 76 mm 2.00" / 51 mm 2.00" / 51 mm
2nd: 0.98" / 25 mm 0.59" / 15 mm 0.98" / 25 mm
3rd: 0.50" / 13 mm - -
4th: 0.50" / 13 mm - -

- Armour deck: 2.00" / 51 mm, Conning tower: 2.00" / 51 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 76,898 shp / 57,366 Kw = 33.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,360 tons

Complement:
444 - 578

Cost:
£4.326 million / $17.304 million

Distribution of weights at normal displacement:
Armament: 165 tons, 1.9 %
Armour: 1,447 tons, 16.9 %
- Belts: 449 tons, 5.3 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 193 tons, 2.3 %
- Armour Deck: 786 tons, 9.2 %
- Conning Tower: 18 tons, 0.2 %
Machinery: 2,009 tons, 23.5 %
Hull, fittings & equipment: 3,597 tons, 42.1 %
Fuel, ammunition & stores: 1,133 tons, 13.2 %
Miscellaneous weights: 200 tons, 2.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,081 lbs / 5,480 Kg = 117.3 x 5.9 " / 150 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.8 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.50
Seaboat quality (Average = 1.00): 1.27

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.501
Length to Beam Ratio: 10.13 : 1
'Natural speed' for length: 26.90 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 32.00 ft / 9.75 m
- Forecastle (20 %): 26.00 ft / 7.92 m
- Mid (47 %): 26.00 ft / 7.92 m (17.00 ft / 5.18 m aft of break)
- Quarterdeck (15 %): 17.00 ft / 5.18 m
- Stern: 17.00 ft / 5.18 m
- Average freeboard: 21.71 ft / 6.62 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.3 %
- Above water (accommodation/working, high = better): 146.0 %
Waterplane Area: 21,246 Square feet or 1,974 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 96 lbs/sq ft or 470 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.14
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

Argentine Design Study, Basileiades Export Light Cruiser laid down 1942

Displacement:
7,000 t light; 7,313 t standard; 8,029 t normal; 8,602 t full load

Dimensions: Length overall / water x beam x draught
565.93 ft / 557.74 ft x 57.74 ft x 17.45 ft (normal load)
172.50 m / 170.00 m x 17.60 m x 5.32 m

Armament:
8 - 5.91" / 150 mm guns (4x2 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
24 - 0.79" / 20.0 mm guns (4x6 guns), 0.25lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,262 lbs / 572 kg
Shells per gun, main battery: 200
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 329.72 ft / 100.50 m 10.66 ft / 3.25 m
Ends: Unarmoured
Main Belt covers 91 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 2.95" / 75 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 0.59" / 15 mm 0.20" / 5 mm -
4th: 0.59" / 15 mm 0.20" / 5 mm -

- Armour deck: 1.97" / 50 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 68,000 shp / 50,728 Kw = 31.13 kts
Range 7,000nm at 15.00 kts
Bunker at max displacement = 1,289 tons

Complement:
423 - 551

Cost:
£3.952 million / $15.809 million

Distribution of weights at normal displacement:
Armament: 152 tons, 1.9 %
Armour: 1,498 tons, 18.7 %
- Belts: 440 tons, 5.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 260 tons, 3.2 %
- Armour Deck: 781 tons, 9.7 %
- Conning Tower: 17 tons, 0.2 %
Machinery: 1,776 tons, 22.1 %
Hull, fittings & equipment: 3,323 tons, 41.4 %
Fuel, ammunition & stores: 1,029 tons, 12.8 %
Miscellaneous weights: 250 tons, 3.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,809 lbs / 5,357 Kg = 114.7 x 5.9 " / 150 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 3.1 ft / 0.9 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.38
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.500
Length to Beam Ratio: 9.66 : 1
'Natural speed' for length: 23.62 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 12.50 degrees
Stern overhang: 1.64 ft / 0.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.53 ft / 9.00 m
- Forecastle (15 %): 24.61 ft / 7.50 m
- Mid (37 %): 24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 19.98 ft / 6.09 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.9 %
- Above water (accommodation/working, high = better): 143.7 %
Waterplane Area: 21,456 Square feet or 1,993 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 96 lbs/sq ft or 471 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.48
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Impressive.

Quoted

Originally posted by Brockpaine
Impressive.

Thank you. I'm usually good a CLs.

Canadian Vickers has two submissions, both based on the Labrador/Manitoba class hull (which was the base for the Scylla, and other export submissions)

The first design is reduced to best meet the low-cost specification;

Quoted

CL8k-1942 Export, Canadian Vickers Light Cruiser laid down 1942

Displacement:
6,000 t light; 6,261 t standard; 6,924 t normal; 7,454 t full load

Dimensions: Length overall / water x beam x draught
531.97 ft / 525.00 ft x 52.00 ft x 20.00 ft (normal load)
162.14 m / 160.02 m x 15.85 m x 6.10 m

Armament:
6 - 5.91" / 150 mm guns (3x2 guns), 103.21lbs / 46.82kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.48lbs / 21.08kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline, all aft, all raised mounts - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,009 lbs / 458 kg
Shells per gun, main battery: 200
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 328.08 ft / 100.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 96 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm 0.98" / 25 mm

- Armour deck: 1.97" / 50 mm, Conning tower: 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 63,004 shp / 47,001 Kw = 32.50 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,193 tons

Complement:
379 - 493

Cost:
£3.477 million / $13.908 million

Distribution of weights at normal displacement:
Armament: 126 tons, 1.8 %
Armour: 1,201 tons, 17.4 %
- Belts: 398 tons, 5.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 142 tons, 2.1 %
- Armour Deck: 655 tons, 9.5 %
- Conning Tower: 6 tons, 0.1 %
Machinery: 1,646 tons, 23.8 %
Hull, fittings & equipment: 2,896 tons, 41.8 %
Fuel, ammunition & stores: 924 tons, 13.4 %
Miscellaneous weights: 130 tons, 1.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,613 lbs / 4,360 Kg = 93.1 x 5.9 " / 150 mm shells or 1.4 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 2.7 ft / 0.8 m
Roll period: 13.3 seconds
Steadiness - As gun platform (Average = 50 %): 47 %
- Recoil effect (Restricted arc if above 1.00): 0.41
Seaboat quality (Average = 1.00): 1.24

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.444
Length to Beam Ratio: 10.10 : 1
'Natural speed' for length: 26.31 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 36
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.00 ft / 7.92 m
- Forecastle (33 %): 24.00 ft / 7.32 m
- Mid (50 %): 24.00 ft / 7.32 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 20.26 ft / 6.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 94.3 %
- Above water (accommodation/working, high = better): 142.9 %
Waterplane Area: 17,997 Square feet or 1,672 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 89 lbs/sq ft or 435 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.25
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

The second is designed to meet or (more often) exceed the various requirements, but at higher (yet comparable to other submissions) cost.

Quoted

CL8k-1942 Export, Canadian Vickers Light Cruiser laid down 1942

Displacement:
8,000 t light; 8,376 t standard; 9,216 t normal; 9,888 t full load

Dimensions: Length overall / water x beam x draught
564.50 ft / 557.00 ft x 56.00 ft x 20.00 ft (normal load)
172.06 m / 169.77 m x 17.07 m x 6.10 m

Armament:
12 - 5.91" / 150 mm guns (4x3 guns), 103.21lbs / 46.82kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.48lbs / 21.08kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on centreline, all aft, all raised mounts - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (12x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,629 lbs / 739 kg
Shells per gun, main battery: 200
12 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.33" / 110 mm 311.68 ft / 95.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 86 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.33" / 110 mm 2.36" / 60 mm 2.76" / 70 mm
2nd: 0.98" / 25 mm 0.20" / 5 mm 0.98" / 25 mm

- Armour deck: 2.76" / 70 mm, Conning tower: 0.79" / 20 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 71,937 shp / 53,665 Kw = 32.00 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,511 tons

Complement:
469 - 611

Cost:
£4.544 million / $18.177 million

Distribution of weights at normal displacement:
Armament: 204 tons, 2.2 %
Armour: 2,014 tons, 21.9 %
- Belts: 567 tons, 6.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 320 tons, 3.5 %
- Armour Deck: 1,120 tons, 12.1 %
- Conning Tower: 7 tons, 0.1 %
Machinery: 1,879 tons, 20.4 %
Hull, fittings & equipment: 3,793 tons, 41.2 %
Fuel, ammunition & stores: 1,216 tons, 13.2 %
Miscellaneous weights: 110 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,033 lbs / 6,365 Kg = 136.0 x 5.9 " / 150 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.19
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.8 seconds
Steadiness - As gun platform (Average = 50 %): 45 %
- Recoil effect (Restricted arc if above 1.00): 0.55
Seaboat quality (Average = 1.00): 1.21

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.517
Length to Beam Ratio: 9.95 : 1
'Natural speed' for length: 26.89 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 34
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 28.00 ft / 8.53 m
- Forecastle (33 %): 26.00 ft / 7.92 m
- Mid (50 %): 26.00 ft / 7.92 m (18.00 ft / 5.49 m aft of break)
- Quarterdeck (15 %): 18.00 ft / 5.49 m
- Stern: 18.00 ft / 5.49 m
- Average freeboard: 22.26 ft / 6.79 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 85.7 %
- Above water (accommodation/working, high = better): 135.1 %
Waterplane Area: 21,961 Square feet or 2,040 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 98 lbs/sq ft or 479 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.91
- Longitudinal: 2.16
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

An intermediate design can be pursued if the Argentines are interested.

Quoted

"From The New World", Argentina Light Cruiser laid down 1942

Displacement:
6,997 t light; 7,337 t standard; 8,068 t normal; 8,653 t full load

Dimensions: Length overall / water x beam x draught
555.00 ft / 555.00 ft x 53.00 ft x 20.00 ft (normal load)
169.16 m / 169.16 m x 16.15 m x 6.10 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft, 1 raised mount aft - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Breech loading guns in deck mounts with hoists
on side, all amidships
2 - 4.53" / 115 mm guns (1x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Breech loading guns in a deck mount with hoist
on centreline forward, all raised guns
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (4x6 guns), 0.24lbs / 0.11kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,472 lbs / 668 kg
Shells per gun, main battery: 200
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 328.08 ft / 100.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 91 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 0.98" / 25 mm
4th: 0.98" / 25 mm - -
5th: 0.98" / 25 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 65,009 shp / 48,497 Kw = 32.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,316 tons

Complement:
425 - 553

Cost:
£4.013 million / $16.051 million

Distribution of weights at normal displacement:
Armament: 176 tons, 2.2 %
Armour: 1,672 tons, 20.7 %
- Belts: 712 tons, 8.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 206 tons, 2.6 %
- Armour Deck: 729 tons, 9.0 %
- Conning Tower: 26 tons, 0.3 %
Machinery: 1,698 tons, 21.0 %
Hull, fittings & equipment: 3,250 tons, 40.3 %
Fuel, ammunition & stores: 1,071 tons, 13.3 %
Miscellaneous weights: 200 tons, 2.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,226 lbs / 5,092 Kg = 109.0 x 5.9 " / 150 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.6 ft / 0.8 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 10.47 : 1
'Natural speed' for length: 26.85 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (25 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 19.30 ft / 5.88 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 89.2 %
- Above water (accommodation/working, high = better): 126.6 %
Waterplane Area: 20,009 Square feet or 1,859 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 95 lbs/sq ft or 465 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.71
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Quoted

"From The New World", Argentina Light Cruiser laid down 1942

Displacement:
6,773 t light; 7,108 t standard; 7,826 t normal; 8,400 t full load

Dimensions: Length overall / water x beam x draught
555.00 ft / 555.00 ft x 53.00 ft x 19.40 ft (normal load)
169.16 m / 169.16 m x 16.15 m x 5.91 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority aft, 1 raised mount aft - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Breech loading guns in deck mounts with hoists
on side, all amidships
2 - 4.53" / 115 mm guns (1x2 guns), 55.12lbs / 25.00kg shells, 1942 Model
Breech loading guns in a deck mount with hoist
on centreline forward, all raised guns
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (4x6 guns), 0.24lbs / 0.11kg shells, 1942 Model
Breech loading guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,472 lbs / 668 kg
Shells per gun, main battery: 200
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 328.08 ft / 100.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 91 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 0.98" / 25 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 0.98" / 25 mm
4th: 0.98" / 25 mm - -
5th: 0.98" / 25 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 2.95" / 75 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 63,798 shp / 47,593 Kw = 32.00 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,292 tons

Complement:
415 - 540

Cost:
£3.935 million / $15.739 million

Distribution of weights at normal displacement:
Armament: 176 tons, 2.3 %
Armour: 1,494 tons, 19.1 %
- Belts: 534 tons, 6.8 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 206 tons, 2.6 %
- Armour Deck: 729 tons, 9.3 %
- Conning Tower: 25 tons, 0.3 %
Machinery: 1,667 tons, 21.3 %
Hull, fittings & equipment: 3,237 tons, 41.4 %
Fuel, ammunition & stores: 1,053 tons, 13.5 %
Miscellaneous weights: 200 tons, 2.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,960 lbs / 4,971 Kg = 106.4 x 5.9 " / 150 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.6 ft / 0.8 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.54
Seaboat quality (Average = 1.00): 1.19

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 10.47 : 1
'Natural speed' for length: 26.85 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 43
Bow angle (Positive = bow angles forward): 0.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 25.00 ft / 7.62 m
- Forecastle (25 %): 22.00 ft / 6.71 m
- Mid (50 %): 22.00 ft / 6.71 m (16.00 ft / 4.88 m aft of break)
- Quarterdeck (15 %): 16.00 ft / 4.88 m
- Stern: 16.00 ft / 4.88 m
- Average freeboard: 19.30 ft / 5.88 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 90.6 %
- Above water (accommodation/working, high = better): 129.6 %
Waterplane Area: 20,009 Square feet or 1,859 Square metres
Displacement factor (Displacement / loading): 122 %
Structure weight / hull surface area: 96 lbs/sq ft or 467 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.70
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Option A has additional belt armour, Option B is the "minimum package."

India offers an update of their previous classes of light cruisers. Design match or exceeds requriments of the Argentine Fleet.

Project 326 A, India Light Cruiser laid down 1942

Displacement:
7,429 t light; 7,773 t standard; 8,780 t normal; 9,586 t full load

Dimensions: Length overall / water x beam x draught
586.19 ft / 557.74 ft x 56.43 ft x 20.34 ft (normal load)
178.67 m / 170.00 m x 17.20 m x 6.20 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in deck mounts with hoists
on side, all amidships
2 - 4.53" / 115 mm guns (1x2 guns), 46.40lbs / 21.05kg shells, 1942 Model
Dual purpose guns in a deck mount with hoist
on centreline aft, all raised guns - superfiring
12 - 1.46" / 37.0 mm guns (6x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
24 - 0.79" / 20.0 mm guns (6x4 guns), 0.24lbs / 0.11kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 1,391 lbs / 631 kg
Shells per gun, main battery: 200
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.54" / 90 mm 362.53 ft / 110.50 m 9.02 ft / 2.75 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.54" / 90 mm 1.57" / 40 mm 3.54" / 90 mm
2nd: 1.57" / 40 mm 0.79" / 20 mm -
3rd: 1.57" / 40 mm 0.79" / 20 mm -
4th: 0.79" / 20 mm - -
5th: 0.39" / 10 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.54" / 90 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 67,211 shp / 50,139 Kw = 31.85 kts
Range 10,000nm at 15.00 kts
Bunker at max displacement = 1,813 tons

Complement:
453 - 589

Cost:
£4.165 million / $16.658 million

Distribution of weights at normal displacement:
Armament: 177 tons, 2.0 %
Armour: 1,549 tons, 17.6 %
- Belts: 482 tons, 5.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 254 tons, 2.9 %
- Armour Deck: 780 tons, 8.9 %
- Conning Tower: 32 tons, 0.4 %
Machinery: 1,756 tons, 20.0 %
Hull, fittings & equipment: 3,808 tons, 43.4 %
Fuel, ammunition & stores: 1,351 tons, 15.4 %
Miscellaneous weights: 140 tons, 1.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,486 lbs / 6,117 Kg = 131.0 x 5.9 " / 150 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.8 ft / 0.9 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 54 %
- Recoil effect (Restricted arc if above 1.00): 0.44
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.480
Length to Beam Ratio: 9.88 : 1
'Natural speed' for length: 27.04 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 35.00 degrees
Stern overhang: 9.84 ft / 3.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 26.57 ft / 8.10 m
- Forecastle (20 %): 19.69 ft / 6.00 m
- Mid (50 %): 19.69 ft / 6.00 m
- Quarterdeck (15 %): 19.69 ft / 6.00 m
- Stern: 19.69 ft / 6.00 m
- Average freeboard: 20.24 ft / 6.17 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 83.4 %
- Above water (accommodation/working, high = better): 137.9 %
Waterplane Area: 21,409 Square feet or 1,989 Square metres
Displacement factor (Displacement / loading): 133 %
Structure weight / hull surface area: 106 lbs/sq ft or 520 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.02
- Longitudinal: 1.92
- Overall: 1.08
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

10t for main director
20t for two HA directors
20t for two torpedo directors
15t for Air Search radar
15t for Surface Search radar
15t for Surface FC radar
25t for growth
10t for ASDIC
10t for AC

The SAE is not very amused to see their Indian friends offering cruiser designs to Argentina....

Quoted

Originally posted by HoOmAn
The SAE is not very amused to see their Indian friends offering cruiser designs to Argentina....

In truth we need the cash for certain projects in the near future. If the SAE is more than willing to "donate" cash for a couple of years India will be more than accomodating to the SAE concerns.

India offers a second design that takes into consideration the concers of the Argentine navy in regard to cost. Argentina can built four to five of these ships for the cost of three of the other designs or built four replacements and still have savings between 6352t to 14352t available for other projects if compared with building four ships of the other projects tendered.

Project 326 B, India Light Cruiser laid down 1942

Displacement:
4,412 t light; 4,589 t standard; 5,250 t normal; 5,780 t full load

Dimensions: Length overall / water x beam x draught
486.64 ft / 475.72 ft x 47.57 ft x 18.04 ft (normal load)
148.33 m / 145.00 m x 14.50 m x 5.50 m

Armament:
6 - 5.91" / 150 mm guns (3x2 guns), 100.31lbs / 45.50kg shells, 1942 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on centreline, all amidships
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1942 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1942 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 623 lbs / 283 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.95" / 75 mm 308.40 ft / 94.00 m 8.14 ft / 2.48 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.79" / 20 mm 1.18" / 30 mm
2nd: 0.98" / 25 mm 0.39" / 10 mm -
3rd: 0.98" / 25 mm 0.39" / 10 mm -
4th: 0.39" / 10 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 51,994 shp / 38,788 Kw = 32.00 kts
Range 9,000nm at 15.00 kts
Bunker at max displacement = 1,191 tons

Complement:
307 - 400

Cost:
£2.620 million / $10.480 million

Distribution of weights at normal displacement:
Armament: 80 tons, 1.5 %
Armour: 939 tons, 17.9 %
- Belts: 308 tons, 5.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 72 tons, 1.4 %
- Armour Deck: 546 tons, 10.4 %
- Conning Tower: 13 tons, 0.2 %
Machinery: 1,358 tons, 25.9 %
Hull, fittings & equipment: 1,895 tons, 36.1 %
Fuel, ammunition & stores: 838 tons, 16.0 %
Miscellaneous weights: 140 tons, 2.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
6,354 lbs / 2,882 Kg = 61.7 x 5.9 " / 150 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 2.5 ft / 0.7 m
Roll period: 12.7 seconds
Steadiness - As gun platform (Average = 50 %): 53 %
- Recoil effect (Restricted arc if above 1.00): 0.33
Seaboat quality (Average = 1.00): 1.32

Hull form characteristics:
Hull has low forecastle, rise aft of midbreak, low quarterdeck
and transom stern
Block coefficient: 0.450
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 25.05 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 40
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 29.99 ft / 9.14 m
- Forecastle (20 %): 18.04 ft / 5.50 m (18.37 ft / 5.60 m aft of break)
- Mid (60 %): 18.04 ft / 5.50 m (18.37 ft / 5.60 m aft of break)
- Quarterdeck (15 %): 18.04 ft / 5.50 m (18.37 ft / 5.60 m before break)
- Stern: 18.37 ft / 5.60 m
- Average freeboard: 19.17 ft / 5.84 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.3 %
- Above water (accommodation/working, high = better): 130.7 %
Waterplane Area: 14,995 Square feet or 1,393 Square metres
Displacement factor (Displacement / loading): 118 %
Structure weight / hull surface area: 69 lbs/sq ft or 335 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.78
- Longitudinal: 2.16
- Overall: 0.86
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

10t for main director
20t for two HA directors
20t for two torpedo directors
15t for Air Search radar
15t for Surface Search radar
15t for Surface FC radar
25t for growth
10t for ASDIC
10t for AC

37mm mounts centerline aft mounted side by side to give a 270 degree protection aft.

Ansaldo's 326I design is heavily based off the standard large destroyer design of which 12 units have already been built or are under construction. Italy feels that simply purchasing units of the design off the shelf would be the best option for Argentina as this will maximize commonality. However, the design at the moment does not meet all the Argentine specifications. It depends whether Argentina feels that loosening some of the specifications is worth the reduced costs of "off the shelf" and increased commonality with Italy. Italy has no issues with the transfer of sensitive pieces of electronic equipment to Argentina and would welcome their involvement in their further development.

In addition to offering the standard design, Ansaldo also drew up a minimum change design that meets the majority of the Argentine requirements. The largest change is a move to a new propulsion plant consisting of two 25,000shp turbines which reduces the speed by about 1kt. The weight savings from the new powerplant are directed into increasing the armour of the standard vessel to a 50mm deck and 50mm belt. OTO feels that the increase in protection from the thicker deck is worthwhile, but that there is little gain from increasing the belt armour from 36mm to 50mm. Either will provide comfortable splinter protection but not a great deal more. Additionally, a 50t reserve topweight has been worked into the design for future growth.


Design 326 I, laid down 1942

Displacement:
4,246 t light; 4,497 t standard; 5,210 t normal; 5,781 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(511.51 ft / 492.13 ft) x 49.21 ft x (16.73 / 17.98 ft)
(155.91 m / 150.00 m) x 15.00 m x (5.10 / 5.48 m)

Armament:
6 - 5.98" / 152 mm 53.0 cal guns - 99.21lbs / 45.00kg shells, 300 per gun
Dual purpose guns in turret on barbette mounts, 1942 Model
3 x 2-gun mounts on centreline ends, majority forward
1 raised mount - superfiring
20 - 1.46" / 37.0 mm 54.0 cal guns - 1.66lbs / 0.75kg shells, 2,000 per gun
Anti-air guns in deck mounts, 1942 Model
5 x Quad mounts on sides, evenly spread
3 raised mounts
18 - 0.79" / 20.0 mm 70.0 cal guns - 0.27lbs / 0.12kg shells, 4,000 per gun
Anti-air guns in deck mounts, 1942 Model
18 x Single mounts on sides, evenly spread
Weight of broadside 633 lbs / 287 kg
8 - 23.6" / 600 mm, 0.00 ft / 0.00 m torpedoes - 0.000 t each, 0.000 t total
In 4 sets of deck mounted side rotating tubes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 1.97" / 50 mm 344.49 ft / 105.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 108 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.76" / 70 mm 1.97" / 50 mm 1.97" / 50 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.39" / 10 mm - -

- Armoured deck - multiple decks: 1.97" / 50 mm For and Aft decks

- Conning towers: Forward 2.76" / 70 mm, Aft 0.00" / 0 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 50,000 shp / 37,300 Kw = 31.83 kts
Range 8,400nm at 15.00 kts
Bunker at max displacement = 1,283 tons

Complement:
306 - 398

Cost:
£2.620 million / $10.482 million

Distribution of weights at normal displacement:
Armament: 259 tons, 5.0 %
Armour: 921 tons, 17.7 %
- Belts: 270 tons, 5.2 %
- Armament: 153 tons, 2.9 %
- Armour Deck: 479 tons, 9.2 %
- Conning Tower: 18 tons, 0.3 %
Machinery: 1,306 tons, 25.1 %
Hull, fittings & equipment: 1,533 tons, 29.4 %
Fuel, ammunition & stores: 964 tons, 18.5 %
Miscellaneous weights: 228 tons, 4.4 %
- Hull below water: 10 tons
- Hull above water: 20 tons
- On freeboard deck: 60 tons
- Above deck: 138 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,553 lbs / 2,519 Kg = 51.8 x 6.0 " / 152 mm shells or 1.2 torpedoes
Stability (Unstable if below 1.00): 1.18
Metacentric height 2.3 ft / 0.7 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.32
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has a flush deck,
a normal bow and large transom stern
Block coefficient (normal/deep): 0.450 / 0.465
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 25.47 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 41
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 10.00 %, 27.89 ft / 8.50 m, 18.04 ft / 5.50 m
- Forward deck: 20.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Aft deck: 55.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Quarter deck: 15.00 %, 18.04 ft / 5.50 m, 18.04 ft / 5.50 m
- Average freeboard: 18.44 ft / 5.62 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 98.2 %
- Above water (accommodation/working, high = better): 180.1 %
Waterplane Area: 16,047 Square feet or 1,491 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 62 lbs/sq ft or 302 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.69
- Longitudinal: 1.45
- Overall: 0.75
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

10t = Scaricabombe
14t = 8 x DC Throwers + 50 W100 charges
10t = D3 sonar
10t = Diesel Emergency Generator
20t = RaA.1 Air Warning Radar
10t = RaS.3 Surface Search Radar
5t = Radio Beacon
20t = 2 x GDR.101 FC Directors
55t = 5 x Quadruple 37/54 mountings (18t ea - 1.75t per gun)
24t = 8 x 650/600 x 8.5 torpedoes
50t = Reserve topweight

There have been some very interesting entries here. Some of them parallel my own thoughts quite closely and most of the larger designs here are roughly identical give or takea few tons or light AA guns etc.

Politics as much as cost will decide the final choices or whether indeed Argentina goes with its one of its home grown designs (based on a shrunken Belgrano or an enlarged Nueve de Julio LSC Class cruiser).

Technical - Tactical Requirement Report for Project 326

All submitted designs have been examined alongside the baseline Project designs from the Project Design Team by the Naval Constructors Board and the Naval Staff.

The winning design is the Project Design Team Project 326A submission.

The runner up was Project 326I CL8k-1942 and third was Project 326G DCN Third Design.


Project 326A, Argentina Light Cruiser laid down 1942

Displacement:
7,882 t light; 8,227 t standard; 9,003 t normal; 9,624 t full load

Dimensions: Length overall / water x beam x draught
566.09 ft / 557.74 ft x 59.06 ft x 19.69 ft (normal load)
172.55 m / 170.00 m x 18.00 m x 6.00 m

Armament:
9 - 5.91" / 150 mm guns (3x3 guns), 100.31lbs / 45.50kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, majority forward, 1 raised mount - superfiring
8 - 4.53" / 115 mm guns (4x2 guns), 55.12lbs / 25.00kg shells, 1936 Model
Dual purpose guns in deck mounts with hoists
on side ends, evenly spread
12 - 1.46" / 37.0 mm guns (6x2 guns), 1.55lbs / 0.70kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 1,365 lbs / 619 kg
Shells per gun, main battery: 200
6 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 328.08 ft / 100.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 90 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 2.95" / 75 mm 1.97" / 50 mm
2nd: 1.97" / 50 mm 0.79" / 20 mm 1.97" / 50 mm
3rd: 0.39" / 10 mm - -
4th: 0.47" / 12 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 75,000 shp / 55,950 Kw = 32.58 kts
Range 7,500nm at 15.00 kts
Bunker at max displacement = 1,397 tons

Complement:
461 - 600

Cost:
£4.383 million / $17.531 million

Distribution of weights at normal displacement:
Armament: 165 tons, 1.8 %
Armour: 1,607 tons, 17.8 %
- Belts: 540 tons, 6.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 237 tons, 2.6 %
- Armour Deck: 820 tons, 9.1 %
- Conning Tower: 9 tons, 0.1 %
Machinery: 1,959 tons, 21.8 %
Hull, fittings & equipment: 3,952 tons, 43.9 %
Fuel, ammunition & stores: 1,121 tons, 12.4 %
Miscellaneous weights: 200 tons, 2.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
14,864 lbs / 6,742 Kg = 144.3 x 5.9 " / 150 mm shells or 1.8 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 3.2 ft / 1.0 m
Roll period: 13.9 seconds
Steadiness - As gun platform (Average = 50 %): 55 %
- Recoil effect (Restricted arc if above 1.00): 0.43
Seaboat quality (Average = 1.00): 1.47

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.486
Length to Beam Ratio: 9.44 : 1
'Natural speed' for length: 27.12 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 37
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.17 ft / 9.50 m
- Forecastle (20 %): 24.61 ft / 7.50 m
- Mid (45 %): 22.97 ft / 7.00 m
- Quarterdeck (15 %): 22.97 ft / 7.00 m
- Stern: 22.97 ft / 7.00 m
- Average freeboard: 24.02 ft / 7.32 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.4 %
- Above water (accommodation/working, high = better): 182.3 %
Waterplane Area: 22,528 Square feet or 2,093 Square metres
Displacement factor (Displacement / loading): 128 %
Structure weight / hull surface area: 98 lbs/sq ft or 481 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.90
- Longitudinal: 2.64
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Good seaboat, rides out heavy weather easily

...thank Argentine Naval Staff for considering their entry, and observe for future reference that Argentine Naval Staff prefer armament, armor, and speed over low cost.