WesWorld

Designed to carry two seaplanes and act as a general scout (and CL hunter...)

What do you guys think of her? Feel free to offer ideas and opinions.

Project 206, Argentina Heavy Scout Cruiser laid down 1935

Displacement:
7,920 t light; 8,276 t standard; 9,230 t normal; 9,993 t full load

Dimensions: Length overall / water x beam x draught
600.40 ft / 590.55 ft x 57.41 ft x 19.69 ft (normal load)
183.00 m / 180.00 m x 17.50 m x 6.00 m

Armament:
6 - 7.48" / 190 mm guns (2x3 guns), 253.53lbs / 115.00kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 4.53" / 115 mm guns (2x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
4 - 4.53" / 115 mm guns (2x2 guns), 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on side, all aft
Weight of broadside 1,962 lbs / 890 kg
Shells per gun, main battery: 150
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 3.94" / 100 mm 114.83 ft / 35.00 m 13.12 ft / 4.00 m
Ends: Unarmoured
Main Belt covers 30 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 2.76" / 70 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm

- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 80,000 shp / 59,680 Kw = 33.19 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,717 tons

Complement:
470 - 612

Cost:
£3.901 million / $15.603 million

Distribution of weights at normal displacement:
Armament: 203 tons, 2.2 %
Armour: 1,452 tons, 15.7 %
- Belts: 325 tons, 3.5 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 247 tons, 2.7 %
- Armour Deck: 843 tons, 9.1 %
- Conning Tower: 37 tons, 0.4 %
Machinery: 2,273 tons, 24.6 %
Hull, fittings & equipment: 3,872 tons, 42.0 %
Fuel, ammunition & stores: 1,310 tons, 14.2 %
Miscellaneous weights: 120 tons, 1.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
11,911 lbs / 5,403 Kg = 56.9 x 7.5 " / 190 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 3.1 ft / 0.9 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.48
Seaboat quality (Average = 1.00): 1.01

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.484
Length to Beam Ratio: 10.29 : 1
'Natural speed' for length: 27.72 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 49
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: 27.07 ft / 8.25 m
- Forecastle (20 %): 20.34 ft / 6.20 m
- Mid (70 %): 17.06 ft / 5.20 m
- Quarterdeck (20 %): 17.06 ft / 5.20 m
- Stern: 17.06 ft / 5.20 m
- Average freeboard: 19.07 ft / 5.81 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 99.1 %
- Above water (accommodation/working, high = better): 137.3 %
Waterplane Area: 23,148 Square feet or 2,151 Square metres
Displacement factor (Displacement / loading): 119 %
Structure weight / hull surface area: 106 lbs/sq ft or 517 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.96
- Longitudinal: 1.39
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Quoted

Main Belt covers 30 % of normal length
Main belt does not fully cover magazines and engineering spaces

If so, she won't maintain CL-catching speed for very long.

I'd say an all forward design would be best suited for a ship that intends to chase her prey. It would also leave a good space aft for the seaplanes and produce a shorter citadel.

Have to agree, while she might be able to catch a CL, odds are good she won't survive doing that more than once. The rain of 6" shells that will result when she does will punch lots of holes in her unarmored spaces, and she doesn't have much of a speed advantage over a 32 knot CL.

What about this version with a full length belt? Also I'm thinking about the powerful Brazilian destroyers with nine 120mm guns, they too pose a threat.

Project 206A, Argentina Heavy Scout Cruiser laid down 1935

Displacement:
8,386 t light; 8,746 t standard; 9,664 t normal; 10,399 t full load

Dimensions: Length overall / water x beam x draught
567.89 ft / 557.74 ft x 55.77 ft x 22.15 ft (normal load)
173.09 m / 170.00 m x 17.00 m x 6.75 m

Armament:
6 - 7.48" / 190 mm guns (2x3 guns), 253.53lbs / 115.00kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on side, all aft
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, 2 raised mounts - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 1,906 lbs / 864 kg
Shells per gun, main battery: 150
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.91" / 150 mm 360.89 ft / 110.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 3.94" / 100 mm 2.76" / 70 mm 3.94" / 100 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
4th: 0.39" / 10 mm - -
5th: 0.39" / 10 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 81,600 shp / 60,874 Kw = 32.91 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,653 tons

Complement:
486 - 633

Cost:
£4.023 million / $16.093 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.1 %
Armour: 1,946 tons, 20.1 %
- Belts: 873 tons, 9.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 256 tons, 2.7 %
- Armour Deck: 778 tons, 8.1 %
- Conning Tower: 38 tons, 0.4 %
Machinery: 2,318 tons, 24.0 %
Hull, fittings & equipment: 3,796 tons, 39.3 %
Fuel, ammunition & stores: 1,278 tons, 13.2 %
Miscellaneous weights: 120 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,126 lbs / 5,500 Kg = 57.9 x 7.5 " / 190 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.17
Metacentric height 2.8 ft / 0.9 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 51 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.491
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 26.98 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 46
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: 27.89 ft / 8.50 m
- Forecastle (20 %): 21.98 ft / 6.70 m
- Mid (70 %): 18.04 ft / 5.50 m
- Quarterdeck (20 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 20.29 ft / 6.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.3 %
- Above water (accommodation/working, high = better): 127.9 %
Waterplane Area: 21,374 Square feet or 1,986 Square metres
Displacement factor (Displacement / loading): 116 %
Structure weight / hull surface area: 103 lbs/sq ft or 504 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 1.92
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

I would want to protect my main battery better, a shell through that 100mm face- weakened by 3 large holes- and you've lost 50% of your firepower.

Also, if you're looking at a very slow overtake, that could well translate into lots of long distance lower % shooting- superior seakeeping and larger magazines may be in order.

How about this design with thicker turret and barbette armour and bigger magazines?

Project 206B, Argentina Heavy Scout Cruiser laid down 1935

Displacement:
8,535 t light; 8,932 t standard; 9,861 t normal; 10,605 t full load

Dimensions: Length overall / water x beam x draught
567.89 ft / 557.74 ft x 55.77 ft x 22.15 ft (normal load)
173.09 m / 170.00 m x 17.00 m x 6.75 m

Armament:
6 - 7.48" / 190 mm guns (2x3 guns), 253.53lbs / 115.00kg shells, 1935 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread, all raised mounts
4 - 4.53" / 115 mm guns (2x2 guns), 46.40lbs / 21.05kg shells, 1933 Model
Dual purpose guns in deck mounts with hoists
on side, all aft
8 - 1.46" / 37.0 mm guns (4x2 guns), 1.55lbs / 0.70kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, 2 raised mounts - superfiring
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side, all forward, all raised mounts - superfiring
Weight of broadside 1,906 lbs / 864 kg
Shells per gun, main battery: 180
8 - 23.6" / 600 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.91" / 150 mm 360.89 ft / 110.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 100 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 3.54" / 90 mm 5.91" / 150 mm
2nd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
3rd: 1.97" / 50 mm 0.98" / 25 mm 1.97" / 50 mm
4th: 0.39" / 10 mm - -
5th: 0.39" / 10 mm - -

- Armour deck: 1.97" / 50 mm, Conning tower: 3.94" / 100 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 81,600 shp / 60,873 Kw = 32.76 kts
Range 8,000nm at 15.00 kts
Bunker at max displacement = 1,673 tons

Complement:
494 - 643

Cost:
£4.050 million / $16.199 million

Distribution of weights at normal displacement:
Armament: 205 tons, 2.1 %
Armour: 2,044 tons, 20.7 %
- Belts: 874 tons, 8.9 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 345 tons, 3.5 %
- Armour Deck: 786 tons, 8.0 %
- Conning Tower: 39 tons, 0.4 %
Machinery: 2,318 tons, 23.5 %
Hull, fittings & equipment: 3,848 tons, 39.0 %
Fuel, ammunition & stores: 1,327 tons, 13.5 %
Miscellaneous weights: 120 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,456 lbs / 5,650 Kg = 59.5 x 7.5 " / 190 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.16
Metacentric height 2.7 ft / 0.8 m
Roll period: 14.2 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.56
Seaboat quality (Average = 1.00): 1.08

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.501
Length to Beam Ratio: 10.00 : 1
'Natural speed' for length: 26.95 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 46
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: 27.89 ft / 8.50 m
- Forecastle (20 %): 21.98 ft / 6.70 m
- Mid (70 %): 18.04 ft / 5.50 m
- Quarterdeck (20 %): 18.04 ft / 5.50 m
- Stern: 18.04 ft / 5.50 m
- Average freeboard: 20.29 ft / 6.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 94.8 %
- Above water (accommodation/working, high = better): 127.0 %
Waterplane Area: 21,574 Square feet or 2,004 Square metres
Displacement factor (Displacement / loading): 117 %
Structure weight / hull surface area: 104 lbs/sq ft or 508 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.93
- Longitudinal: 1.88
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Quoted

Originally posted by Hood
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 4.72" / 120 mm 3.54" / 90 mm 5.91" / 150 mm

Why do you put more armor on the barbettes than on the turret's face?...

Dunno about main battery usefulness. Six guns doesn't seem enough if you're trying to hunt a light cruiser which probably will have between eight and twelve of those, firing against you at a higher RoF.

Most South American cruisers and many SAE cruisers mount just 8 guns or so, so her armament of 6 doesn't seem to bad, IF its an all forward arangement for the main battery that is.