WesWorld

Nothing much new in the building plan so far except one of these to support ships further out into the Atlantic to reduce reliance on shore support.

Project 720, Argentina Fleet Replenishment Ship laid down 1948

Displacement:
9,459 t light; 9,709 t standard; 12,081 t normal; 13,978 t full load

Dimensions: Length overall / water x beam x draught
639.82 ft / 623.36 ft x 73.98 ft x 18.86 ft (normal load)
195.02 m / 190.00 m x 22.55 m x 5.75 m

Armament:
2 - 3.94" / 100 mm guns (1x2 guns), 30.42lbs / 13.80kg shells, 1933 Model
Dual purpose guns in deck mount
on centreline aft
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
4 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1933 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
Weight of broadside 68 lbs / 31 kg
Shells per gun, main battery: 200

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm -
2nd: 0.59" / 15 mm 0.39" / 10 mm -
3rd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 11,250 shp / 8,393 Kw = 18.02 kts
Range 17,000nm at 16.00 kts
Bunker at max displacement = 4,269 tons

Complement:
576 - 749

Cost:
£2.808 million / $11.233 million

Distribution of weights at normal displacement:
Armament: 9 tons, 0.1 %
Armour: 5 tons, 0.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 275 tons, 2.3 %
Hull, fittings & equipment: 3,870 tons, 32.0 %
Fuel, ammunition & stores: 2,622 tons, 21.7 %
Miscellaneous weights: 5,300 tons, 43.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
24,142 lbs / 10,951 Kg = 791.2 x 3.9 " / 100 mm shells or 3.7 torpedoes
Stability (Unstable if below 1.00): 1.08
Metacentric height 3.7 ft / 1.1 m
Roll period: 16.2 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 1.55

Hull form characteristics:
Hull has raised forecastle, raised quarterdeck
Block coefficient: 0.486
Length to Beam Ratio: 8.43 : 1
'Natural speed' for length: 24.97 kts
Power going to wave formation at top speed: 27 %
Trim (Max stability = 0, Max steadiness = 100): 45
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 8.99 ft / 2.74 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 27.89 ft / 8.50 m
- Forecastle (17 %): 24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
- Mid (50 %): 16.40 ft / 5.00 m
- Quarterdeck (15 %): 21.33 ft / 6.50 m (16.40 ft / 5.00 m before break)
- Stern: 21.33 ft / 6.50 m
- Average freeboard: 18.76 ft / 5.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 56.6 %
- Above water (accommodation/working, high = better): 164.6 %
Waterplane Area: 30,342 Square feet or 2,819 Square metres
Displacement factor (Displacement / loading): 204 %
Structure weight / hull surface area: 90 lbs/sq ft or 440 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.05
- Longitudinal: 0.99
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Range is 16,000nm at 16kts (bunkerage 3,780 tons), remaining 489 tons is transferable fuel (oil fuel or aviation fuel)

Misc Weight
5 tons for one surface search RDF set
250 tons for cranes and underway replenishment equipment
3,000 tons for dry stores
750 tons for frozen stores and refridgeration equipment
750 tons ammunition
250 tons for workshops
250 tons for extra cabins
45 tons spare

Recognising that the age of the torpedo boat is all but over (and that the basic design is cramped and quite crappy), the three Indomita Class torpedo boats will be refitted for general escort duties. Their primary role is AA escort of convoys but they have a minimal if useful ASW capability too.
The four later Indominta II and Project 454 developments will get radar and will retain their 600mm torpedoes as useful surface escorts.

Originally I wanted 4x2 55mm but the ship couldn't take them and a decent enough ammo load. Even now its not brilliant but keeps these relatively young ships going.


Indomita Class, Argentina Escort laid down 1932

Displacement:
792 t light; 819 t standard; 891 t normal; 949 t full load

Dimensions: Length overall / water x beam x draught
290.71 ft / 285.43 ft x 31.50 ft x 7.71 ft (normal load)
88.61 m / 87.00 m x 9.60 m x 2.35 m

Armament:
6 - 2.17" / 55.0 mm guns (3x2 guns), 5.08lbs / 2.30kg shells, 1947 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, 1 raised mount
Aft Main mounts separated by engine room
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1936 Model
Anti-aircraft guns in deck mounts
on side, all aft, all raised mounts - superfiring
Weight of broadside 31 lbs / 14 kg
Shells per gun, main battery: 500

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.59" / 15 mm 0.59" / 15 mm -
2nd: 0.39" / 10 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 22,000 shp / 16,412 Kw = 32.00 kts
Range 2,500nm at 15.00 kts
Bunker at max displacement = 130 tons

Complement:
81 - 106

Cost:
£0.430 million / $1.721 million

Distribution of weights at normal displacement:
Armament: 4 tons, 0.4 %
Armour: 5 tons, 0.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 455 tons, 51.0 %
Hull, fittings & equipment: 288 tons, 32.4 %
Fuel, ammunition & stores: 99 tons, 11.2 %
Miscellaneous weights: 40 tons, 4.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
336 lbs / 152 Kg = 66.2 x 2.2 " / 55 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.30
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.1 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 0.80

Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.450
Length to Beam Ratio: 9.06 : 1
'Natural speed' for length: 19.56 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 63
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: 19.69 ft / 6.00 m
- Forecastle (20 %): 18.37 ft / 5.60 m
- Mid (40 %): 18.37 ft / 5.60 m (10.66 ft / 3.25 m aft of break)
- Quarterdeck (13 %): 10.66 ft / 3.25 m
- Stern: 10.66 ft / 3.25 m
- Average freeboard: 13.85 ft / 4.22 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 173.8 %
- Above water (accommodation/working, high = better): 181.6 %
Waterplane Area: 5,957 Square feet or 553 Square metres
Displacement factor (Displacement / loading): 65 %
Structure weight / hull surface area: 27 lbs/sq ft or 130 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 2.24
- Overall: 0.58
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

1948 Refit Notes
Twin 100mm DP and 37mm mounts replaced by twin 55mm AA mounts
Single 20mm mounts replaced by new twin mounts
Torpedo tubes removed
Langhiri-Florisson Asdic added
Refurbishment of internal fittings for life extension

Misc Weight
10 tons for German HA/LA director with FC RDF
5 tons for Chilean surface search RDF set
15 tons for one DCR and two DCT for 20x DC
10 tons for Asdic

Quoted

Recognising that the age of the torpedo boat is all but over

Not necessarily. You could arm them with rockets or missiles and refer to those weapons as "Air Torpedoes" thus giving you an excuse to keep on using the term "Torpedo Boat".

Looking to replace the Avispon with a modern third carrier, Argentina's naval architects have dipped their toes into creating a modern carrier.
This is a first draft, armour is quite light and a full belt might be better.


Project 721, Argentina Aircraft Carrier laid down 1948

Displacement:
16,025 t light; 16,565 t standard; 19,112 t normal; 21,150 t full load

Dimensions: Length overall / water x beam x draught
705.18 ft / 688.98 ft x 96.78 ft x 18.37 ft (normal load)
214.94 m / 210.00 m x 29.50 m x 5.60 m

Armament:
8 - 5.04" / 128 mm guns (4x2 guns), 64.00lbs / 29.03kg shells, 1947 Model
Automatic rapid fire guns in deck mounts with hoists
on side ends, evenly spread, all raised mounts - superfiring
12 - 2.17" / 55.0 mm guns (6x2 guns), 5.08lbs / 2.30kg shells, 1947 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread, all raised mounts - superfiring
12 - 1.46" / 37.0 mm guns (6x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 592 lbs / 268 kg
Shells per gun, main battery: 450

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 2.76" / 70 mm 196.85 ft / 60.00 m 9.84 ft / 3.00 m
Ends: Unarmoured
Main Belt covers 44 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Torpedo Bulkhead:
0.98" / 25 mm 508.53 ft / 155.00 m 16.99 ft / 5.18 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.79" / 20 mm 0.98" / 25 mm
2nd: 0.59" / 15 mm 0.59" / 15 mm -
3rd: 0.59" / 15 mm 0.39" / 10 mm -

- Armour deck: 1.97" / 50 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 100,000 shp / 74,600 Kw = 31.16 kts
Range 14,000nm at 16.00 kts
Bunker at max displacement = 4,585 tons

Complement:
812 - 1,056

Cost:
£7.274 million / $29.098 million

Distribution of weights at normal displacement:
Armament: 87 tons, 0.5 %
Armour: 2,398 tons, 12.5 %
- Belts: 287 tons, 1.5 %
- Torpedo bulkhead: 315 tons, 1.6 %
- Armament: 39 tons, 0.2 %
- Armour Deck: 1,758 tons, 9.2 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,444 tons, 12.8 %
Hull, fittings & equipment: 6,897 tons, 36.1 %
Fuel, ammunition & stores: 3,087 tons, 16.2 %
Miscellaneous weights: 4,200 tons, 22.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
37,517 lbs / 17,018 Kg = 586.3 x 5.0 " / 128 mm shells or 6.1 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 6.7 ft / 2.0 m
Roll period: 15.7 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.10

Hull form characteristics:
Hull has raised forecastle
and transom stern
Block coefficient: 0.546
Length to Beam Ratio: 7.12 : 1
'Natural speed' for length: 30.64 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 64
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 4.92 ft / 1.50 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.00 ft / 9.45 m
- Forecastle (25 %): 31.00 ft / 9.45 m (21.00 ft / 6.40 m aft of break)
- Mid (50 %): 21.00 ft / 6.40 m
- Quarterdeck (15 %): 21.00 ft / 6.40 m
- Stern: 21.00 ft / 6.40 m
- Average freeboard: 23.50 ft / 7.16 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 88.6 %
- Above water (accommodation/working, high = better): 237.7 %
Waterplane Area: 48,264 Square feet or 4,484 Square metres
Displacement factor (Displacement / loading): 157 %
Structure weight / hull surface area: 111 lbs/sq ft or 544 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.99
- Longitudinal: 1.12
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform

Class Names:

Belt is box armour around magazines

Endurance is 12,000nm at 15kts (3,954 tons), remaining bunkerage (631 tons) for aviation fuel (917,818 litres)

Hangar deck: 550 x 70 x 17.5ft
Served by two 55 x 44ft lifts with capacity for 30,000lbs
Two hydralic accelerators with capacity for 30,000lbs aircraft
Arrestor gear of 9 wires, 1 trickle wire, 2 forward wires and two safety barriers

48 aircraft usually carried (4x 12 aircraft squadrons)
2 crated spare aircraft carried for attrition replacement

Electric Equipment:
One Chilean surface search RDF set
One Chilean aerial search RDF set
One German main HA/LA director with RDF
Four German AA directors with RDF
HF/DF
VHF Homing Beacon

Misc Weight
2,400 tons for 48 aircraft
150 tons for lifts
500 tons for hangar equipment and aircraft stores
500 tons for aircraft ammunition stores
200 tons for fireproof partitions and fire-fighting gear in hangar
100 tons for electronics
200 tons for command spaces and CIC
150 tons for air conditioning and habitability

Another new class for 1948, two LSTs to give the Marines more modern vessels to operate from.

The design is basically my RN Beach Class (modelled on ShinRa's Canadian design) but converted into metric. Lazy from me, but effective I think since the basic design ShinRa came up with is pretty good.


Project 722 Class, Argentina Landing Ship Tank laid down 1948

Displacement:
2,644 t light; 2,721 t standard; 3,209 t normal; 3,599 t full load

Dimensions: Length overall / water x beam x draught
347.84 ft / 344.49 ft x 55.12 ft x 9.84 ft (normal load)
106.02 m / 105.00 m x 16.80 m x 3.00 m

Armament:
1 - 4.53" / 115 mm guns in single mounts, 55.12lbs / 25.00kg shells, 1933 Model
Dual purpose gun in a deck mount with hoist
on centreline aft
4 - 1.46" / 37.0 mm guns (2x2 guns), 1.55lbs / 0.70kg shells, 1944 Model
Anti-aircraft guns in deck mounts
on side, all forward
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1941 Model
Anti-aircraft guns in deck mounts
on side, all amidships
Weight of broadside 63 lbs / 29 kg
Shells per gun, main battery: 350

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.59" / 15 mm 0.98" / 25 mm
2nd: 0.59" / 15 mm 0.59" / 15 mm -
3rd: 0.39" / 10 mm - -

- Conning tower: 1.97" / 50 mm

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 4,000 shp / 2,984 Kw = 16.63 kts
Range 8,800nm at 15.00 kts
Bunker at max displacement = 878 tons

Complement:
213 - 277

Cost:
£0.834 million / $3.338 million

Distribution of weights at normal displacement:
Armament: 7 tons, 0.2 %
Armour: 14 tons, 0.4 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 5 tons, 0.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 9 tons, 0.3 %
Machinery: 98 tons, 3.0 %
Hull, fittings & equipment: 1,168 tons, 36.4 %
Fuel, ammunition & stores: 565 tons, 17.6 %
Miscellaneous weights: 1,357 tons, 42.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
9,117 lbs / 4,135 Kg = 196.5 x 4.5 " / 115 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.22
Metacentric height 2.9 ft / 0.9 m
Roll period: 13.5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.02
Seaboat quality (Average = 1.00): 1.81

Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.601
Length to Beam Ratio: 6.25 : 1
'Natural speed' for length: 21.78 kts
Power going to wave formation at top speed: 41 %
Trim (Max stability = 0, Max steadiness = 100): 39
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 19.03 ft / 5.80 m
- Forecastle (20 %): 15.75 ft / 4.80 m
- Mid (50 %): 15.75 ft / 4.80 m
- Quarterdeck (35 %): 15.75 ft / 4.80 m
- Stern: 15.75 ft / 4.80 m
- Average freeboard: 16.01 ft / 4.88 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 58.7 %
- Above water (accommodation/working, high = better): 204.0 %
Waterplane Area: 14,487 Square feet or 1,346 Square metres
Displacement factor (Displacement / loading): 198 %
Structure weight / hull surface area: 61 lbs/sq ft or 299 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.74
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Class Names: Punta Medanos, Punta Delgada

Electronic Equipment:
One Phillips high-definition surface search set