WesWorld

Fleet submarines


Type 42's (30 ships built, 18 building, 48 subs ordered in total)
R-98 to 112 and R-114 to 146 (48 ships)
D-22 to 33 (12 ships)


Coastal subs

R-62 to 73 (12 ships)
R-74 to 97 (24 ships), 24 more (cancelled)

Midget subs

MSS-1 through 12 (repeat XSS-2 class)

Experimental subs

Type 43 class, Perch (SSF-14) and Permit (SSF-15)

XSS-1 Sold to Mexico
XSS-2 Sold to Mexico

XSS-3 Novarum

XSS-4,5,6,7 and 8

XSS-9 Alpha

No longer in service

D-1 to 8 (8 ships) decomissioned
D-9 to 21 (12 ships) decommissioned

R-1 to 8 (8 ships) decomissioned
R-9 to 12 (4 ships) decomissioned
R-14 to 25 (12 ships) decomissioned
R-26 to 37 (12 ships) Sold to Mexico
R-38 to 61 (24 ships) decomissioned

Future design

Type 42 class Fleet Submarine, designed to replace the old D-1 through 21 and boost fleet sub numbers, their entry into service was slow as the yards in Palinerus were too small to build them and needed to be expanded. As a result Additional R-98 class subs were ordered and small numbers of the Type 42 (numbered using new classification system, SSF-16 onward) began building in 1944 in other dockyards. Production eventually picked up pace and the last six boats were built in Palinerus as intended. Named after types of sharks.

Names:
Sharpnose, Bluntnose, Broadnose, Longnose, Blacknose, Whitenose (SSF-16 through 22, completed in 1945)
Blackfin, Lowfin, Smallfin, Kitefin, Highfin, Whitefin (SSF-23 through 28, started in 1946)
Sailfin, Sickelfin, Longfin, Narrowfin, Sharpfin, Sawback (SSF-29 through 34, started in late 1946)
Knifetooth, Hooktooth, Snaggletooth, Sharptooth, Largetooth, Rasptooth (SSF-35 through 40, started in late 1946)
Arrowhead, Longsnout, Gulper, Bramble, Prickly, Porbeagle (SSF-41 through 46, started in mid 1947)
Short tail, Flagtail, Ribbontail, Sawtail, Spot tail, Spurdog (SSF-47 through 52, started in mid 1947)
Great white, Mako, Leopard, Tiger, Blue, Goblin (SSF-53 through 58, started in 1948 )
Epaulette, Wobblegong, Finback, Blacktip, Blackgill, Barbelthroat (SSF-59 through 64, started in 1948 )


Type 42 class fleet submarine (improved sim)
Date: 1942
Type: Oceanic
Length: 94.0m (308.40 ft)
Beam: 9.6m (31.50 ft)
Draft: 5.8m (19.03 ft)
Crush depth: 300m (984.25 ft)
Light Displacement: 1900t
Loaded Displacement: 2276t
Full Displacement: 2617t
Weight of fuel & batteries: 700t
Reserve buoyancy: 14%

Armament:
- 1 x 7.5cm deck gun
- 6 x 21" TT
- 26 tons for mines or reload torpedoes
ElecHP: 4800hp
DieselHP: 11500hp
Speed:
- Max Surf Speed: 21 knots
- Max Sub Speed: 10.7 knots
Range:
- Surfaced: 14143nm@10 knots
- Submerged: 67nm@6 knots / 14nm@10 knots
Tons Oil: 350.0t
Tons Battery: 350.0t
Miscellaneous Weight: 89 tons
-- 2 ton: 2x0.50cal MGs + 0.30cal MGs, mounts, and ammo
-- 87 tons all other misc weight

Old sim below

Date: 1940-44
Type: Oceanic
Length: 94.0m (308.40 ft)
Beam: 9.6m (31.50 ft)
Draft: 5.8m (19.03 ft)
Crush depth: 300m (984.25 ft)
Light Displacement 1875t
Loaded Displacement 2251t
Full Displacement 2617t
wt fuel&batts: 700t
Reserve buoyancy: 14%

Armament:
- 6 x 21" TT (bow), 2 x 21" TT stern
- 26 tons for mines or reload torpedoes
ElecHP: 4800hp
DieselHP: 11500hp
Speed:
- Max Surf Speed: 21 knots
- Max Sub Speed: 10.7 knots
Range:
- Surfaced: 14143nm@10 knots
- Submerged: 67nm@6 knots / 14nm@10 knots
Tons Oil: 350.0t
Tons Battery: 350.0t
Miscellaneous Weight: 64 tons

Crew: 90

Future project

R-98-class Submarine Given the large number of obsolete submarines of WW-1 era design still in service, the D-22 class design was an expensive commodity that was in short supply with only 12 ships. The collapse of the Cleito treaty in 1935 spurred Atlantean designers to come up with new submarine designs. Designers focus was still on coastal type designs and the R-98 was originally classed as such. With the R-74 type still building it wasn't until 1939/40 that the R-98 class started building. Ironically enough with the delay of the type 42 class subs additional units of the R-98 class were ordered to keep shipyards working and fill the expected gap in submarine production. This resulted in the R-98 class being the largest class of subs ever in the Atlantean fleet up until that time.

24 ships ordered in 1939, additional order of 24 made in 1940
originally classed as coastal subs their long range led to them being reclassed as fleet subs.
Names:
R-98-109 (12 ships) Names: Anemonefish, Batfish, Clingfish, Dartfish, Elephantfish, Firefish, Gibberfish, Hawkfish, Icefish, Jawfish, Kelpfish, Lancetfish
R-110-122 (no R-113) completed by April 1942 (12 ships) Names: Medusafish, Nibblefish, Oarfish, Pilotfish, Quillfish, Razorfish, Sawfish, Triggerfish, Unicornfish, Velvetfish, Waspfish, Zebrafish
R-123-134 completed by Jan. 1944 (12 ships) Albacore, Barb, Cusk, Darter, Escolar, Fire Goby, Garibaldi, Halosaur, Loosejaw, Medaka, Pintano, Remora,
R-135-146 completed by December, 1945 (12 ships) Archerfish, Blackfish, Cornetfish, Dragonfish, Fingerfish, Ghostfish, Hatchetfish, Jackfish, Knifefish, Lionfish, Marblefish, Pricklefish

Date 1940
Coastal
Armament 1x75mm gun, 2x20mm, 2x 50 cal MG (removable), 5x21" TT
ElecHP 2,000
DieselHP 4,500
CREW 49
wt fuel&batts 250t
Light Displacement 735t
Loaded Displacement 835t
Full Displacement 987t
res buoyancy 15%
Max Surf Spd 19 knots
Max Sub Spd 10 knots

Length: 220 feet/67.0m
Beam: 20.35 feet/6.2m
Draft: 15.75 feet/4.8m
Crush depth: 212.5m (697 ft)
#TT 6 x 21"
Tons Oil: 100.0t
Tons Battery: 150.0t
Tons Misc: 44

Surface Range 7,640@10 knots
Underwater range 53@6 knots or 10nm@10 knots
Subs are equipped with Rostrum device and torpedo tube adapted Fallax system.
These ships are considered fleet Submarines due to their range.

Twelve subs of the D-22 class were laid down as the first treaty designed submarines in the Atlantean navy, an additional four units were laid down, three for foreign navies and a forth as a test bed for new submarine technology. In the 40's the subs were considered short legged in terms of range when compared to the newer R-98 class subs and plans were made to refit them to fill a new role and increase their range. The now named Dolphin class were refitted to serve as Radar picket subs with emphasis on making the ships as quiet as possible with streamlining and other measures. Given their new role dive depth was not considered an issue. The original armament, her stern torpedo tubes and conning tower were removed. They had a new more streamlined conning tower added along with new sonar and Radar and a new armament consisting of 1x75mm, 1x40mm AA and 4 50 cal. MG's. Their range was increased and new diesel engines added. Their refit cost 507 tons each. (trim altered and bow form altered for new sonar)

As refitted in 1945

Dolphin (D-22 class), Atlantean Fleet sub laid down 1930 (Engine 1945)

Displacement:
1,056 t light; 1,081 t standard; 1,157 t normal; 1,219 t full load

Dimensions: Length overall / water x beam x draught
219.00 ft / 219.00 ft x 24.50 ft x 15.10 ft (normal load)
66.75 m / 66.75 m x 7.47 m x 4.60 m

Armament:
1 - 2.95" / 75.0 mm guns in single mounts, 12.87lbs / 5.84kg shells, 1930 Model
Quick firing gun in deck mount
on centreline aft
1 - 1.57" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1930 Model
Anti-aircraft gun in deck mount
on centreline aft
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1930 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 15 lbs / 7 kg
Shells per gun, main battery: 150
4 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 4,500 shp / 3,357 Kw = 19.33 kts
Range 6,000nm at 10.00 kts
Bunker at max displacement = 138 tons

Complement:
98 - 128

Cost:
£0.228 million / $0.911 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.2 %
Machinery: 114 tons, 9.8 %
Hull, fittings & equipment: 641 tons, 55.4 %
Fuel, ammunition & stores: 101 tons, 8.7 %
Miscellaneous weights: 300 tons, 25.9 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
643 lbs / 292 Kg = 49.9 x 3.0 " / 75 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 0.6 ft / 0.2 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 8.94 : 1
'Natural speed' for length: 14.80 kts
Power going to wave formation at top speed: 56 %
Trim (Max stability = 0, Max steadiness = 100): 42
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 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): 0.0 %
Waterplane Area: 3,575 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 213 %
Structure weight / hull surface area: 121 lbs/sq ft or 590 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.61
- Longitudinal: 2.23
- Overall: 2.52
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability


Misc. weight breakdown
200 tons for ballast
60 tons for sonar, hydrophones and radar's
18 tons for 12 torpedo reloads
10 tons for snorkel (rostrum)
8 tons for "Placidus" system
4 tons for Fallax system

Original configuration

D-22 through 33, 12 boats
Type:fleet subs
An additional 4 built for a foreign buyer but deal did not go through, 1 taken in hand for conversion to experimental platform, other three sold, 1 to Mexico and 2 to Chile
Renamed and new Pennant numbers assigned in 1944, Dolphin (SSF-1) ex-D-22, Shark (SSF-2) ex-D-23, Bullhead (SSF-3) ex-D-24, Stickleback (SSF-4) ex-D-25, Marlin (SSF-5) ex-D-26, Barracuda (SSF-6) ex-D27, Pike (SSF-7) ex-D-28, Thresher (SSF-8) ex-D-29, Hammerhead (SSF-9) ex-D-30, Spearfish (SSF-10) ex-D-31, Salmon (SSF-11) ex-D-32, Swordfish (SSF-12) ex-D-33

Atlantean Submarine laid down 1930

Displacement:
1,013 t light; 1,042 t standard; 1,157 t normal; 1,250 t full load

Dimensions: Length overall / water x beam x draught
219.00 ft / 219.00 ft x 24.50 ft x 15.10 ft (normal load)
66.75 m / 66.75 m x 7.47 m x 4.60 m

Armament:
2 - 3.95" / 100 mm guns in single mounts, 30.81lbs / 13.98kg shells, 1930 Model
Breech loading guns in deck mounts
on centreline, evenly spread
1 - 1.58" / 40.0 mm guns in single mounts, 1.95lbs / 0.89kg shells, 1930 Model
Anti-aircraft gun in deck mount
on centreline aft, 1 raised gun
2 - 0.79" / 20.0 mm guns (1x2 guns), 0.24lbs / 0.11kg shells, 1930 Model
Anti-aircraft guns in deck mount
on centreline amidships, all raised guns - superfiring
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1930 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 64 lbs / 29 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 2,729 shp / 2,036 Kw = 17.05 kts
Range 5,200nm at 12.00 kts
Bunker at max displacement = 208 tons

Complement:
98 - 128

Cost:
£0.225 million / $0.900 million

Distribution of weights at normal displacement:
Armament: 8 tons, 0.7 %
Machinery: 83 tons, 7.1 %
Hull, fittings & equipment: 702 tons, 60.7 %
Fuel, ammunition & stores: 144 tons, 12.5 %
Miscellaneous weights: 220 tons, 19.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
646 lbs / 293 Kg = 21.0 x 4.0 " / 100 mm shells or 0.5 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 0.8 ft / 0.2 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 8.94 : 1
'Natural speed' for length: 14.80 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.0 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 3,575 Square feet or 332 Square metres
Displacement factor (Displacement / loading): 257 %
Structure weight / hull surface area: 132 lbs/sq ft or 647 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.93
- Longitudinal: 2.44
- Overall: 2.75
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

200 tons for ballast
20 tons for 12 reload torpedo's

Operational depth 275 feet (82.5 metres)
Emergency depth 440 feet (132 metres)
Crush depth 687.5 feet (206.25 metres)

R-74, Atlantean coastal sub laid down 1937

Ships in class: R-74 to R-97 (24 ships), later given names
Amberjack, Bala shark, Cobia, Dace, Eelpout, Feirasfer, Goldeye, Hairtale, Inanga, Jellynose, Knifejaw, Lenok, Morwong, Nase, Opaleye, Pearleye, Quillback, Rasbora, Shiner, Tetra, Uaru, Vimba, Wrasse, Yellowjack

Displacement:
479 t light; 491 t standard; 537 t normal; 573 t full load

Dimensions: Length overall / water x beam x draught
165.50 ft / 165.50 ft x 22.00 ft x 12.00 ft (normal load)
50.44 m / 50.44 m x 6.71 m x 3.66 m

Armament:
1 - 2.95" / 75.0 mm guns in single mounts, 12.89lbs / 5.85kg shells, 1937 Model
Breech loading gun in deck mount
on centreline forward
4 - 0.79" / 20.0 mm guns (2x2 guns), 0.24lbs / 0.11kg shells, 1937 Model
Anti-aircraft guns in deck mounts
on centreline, all aft, all raised mounts - superfiring
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1937 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 150
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 1,127 shp / 840 Kw = 15.00 kts
Range 3,000nm at 12.50 kts
Bunker at max displacement = 82 tons

Complement:
55 - 72

Cost:
£0.123 million / $0.494 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.3 %
Machinery: 31 tons, 5.8 %
Hull, fittings & equipment: 306 tons, 57.0 %
Fuel, ammunition & stores: 58 tons, 10.8 %
Miscellaneous weights: 140 tons, 26.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
191 lbs / 87 Kg = 14.8 x 3.0 " / 75 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 0.6 ft / 0.2 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.430
Length to Beam Ratio: 7.52 : 1
'Natural speed' for length: 12.86 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.10 ft / 0.03 m
- Mid (50 %): 0.10 ft / 0.03 m
- Quarterdeck (15 %): 0.10 ft / 0.03 m
- Stern: 0.10 ft / 0.03 m
- Average freeboard: 0.09 ft / 0.03 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 120.4 %
- Above water (accommodation/working, high = better): 0.8 %
Waterplane Area: 2,286 Square feet or 212 Square metres
Displacement factor (Displacement / loading): 248 %
Structure weight / hull surface area: 94 lbs/sq ft or 461 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.36
- Longitudinal: 2.58
- Overall: 2.75
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

Operational depth:
Emergency depth
Crush depth

105 tons for ballast
15 tons for 10 reload torpedo's
10 for "improved hydrophones"
10 tons for Fallax system

Coastal submarines


R-62 to 73, due for replacement once last of R-98 class enter service. (12 ships)

R-62 class sub, Atlantis Coastal submarine laid down 1925

Displacement:
410 t light; 421 t standard; 438 t normal; 451 t full load

Dimensions: Length overall / water x beam x draught
135.01 ft / 135.00 ft x 15.00 ft (Bulges 22.00 ft) x 12.00 ft (normal load)
41.15 m / 41.15 m x 4.57 m (Bulges 6.71 m) x 3.66 m

Armament:
2 - 2.95" / 75 mm guns in single mounts, 12.84lbs / 5.82kg shells, 1925 Model
Breech loading guns in deck mounts
on centreline, evenly spread
2 - 1.00" / 25 mm guns (1x2 guns), 0.50lbs / 0.23kg shells, 1925 Model
Breech loading guns in deck mount
on centreline
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 150
3 - 21.0" / 533.4 mm submerged torpedo tubes: 2 forward, 1 aft

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 1,102 shp / 822 Kw = 15.00 kts
Range 6,000nm at 6.00 kts
Bunker at max displacement = 31 tons

Complement:
47 - 62

Cost:
£0.072 million / $0.290 million

Distribution of weights at normal displacement:
Armament: 3 tons, 0.8 %
Machinery: 36 tons, 8.2 %
Hull, fittings & equipment: 291 tons, 66.4 %
Fuel, ammunition & stores: 28 tons, 6.4 %
Miscellaneous weights: 80 tons, 18.3 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
261 lbs / 118 Kg = 20.3 x 3.0 " / 75 mm shells or 0.4 torpedoes
Stability (Unstable if below 1.00): 1.20
Metacentric height 0.4 ft / 0.1 m
Roll period: 14.5 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.430
Length to Beam Ratio: 6.14 : 1
'Natural speed' for length: 11.62 kts
Power going to wave formation at top speed: 58 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 0.10 ft / 0.03 m
- Forecastle (30 %): 0.10 ft / 0.03 m
- Mid (0 %): 0.10 ft / 0.03 m
- Quarterdeck (55 %): 0.10 ft / 0.03 m
- Stern: 0.10 ft / 0.03 m
- Average freeboard: 0.10 ft / 0.03 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 92.7 %
- Above water (accommodation/working, high = better): 0.5 %
Waterplane Area: 1,272 Square feet or 118 Square metres
Displacement factor (Displacement / loading): 246 %
Structure weight / hull surface area: 122 lbs/sq ft or 596 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 4.25
- Longitudinal: 4.53
- Overall: 4.28
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform

operational diving depth: 428 feet
Emergency diving depth: 684 feet
Crush depth: 1070 feet

Midgit submarines


MSS-1, Atlantean Midget sub laid down 1932

Displacement:
54 t light; 55 t standard; 56 t normal; 56 t full load

Dimensions: Length overall / water x beam x draught
62.00 ft / 62.00 ft x 8.75 ft x 5.75 ft (normal load)
18.90 m / 18.90 m x 2.67 m x 1.75 m

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 1 shaft, 19 shp / 14 Kw = 6.75 kts
Range 1,500nm at 5.00 kts
Bunker at max displacement = 2 tons

Complement:
9 - 13

Cost:
£0.009 million / $0.036 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 1 tons, 1.0 %
Hull, fittings & equipment: 39 tons, 70.2 %
Fuel, ammunition & stores: 2 tons, 3.7 %
Miscellaneous weights: 14 tons, 25.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
86 lbs / 39 Kg = 0.8 x 6 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.1 ft / 0.0 m
Roll period: 10.2 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.625
Length to Beam Ratio: 7.09 : 1
'Natural speed' for length: 7.87 kts
Power going to wave formation at top speed: 39 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 32.1 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 399 Square feet or 37 Square metres
Displacement factor (Displacement / loading): 369 %
Structure weight / hull surface area: 65 lbs/sq ft or 318 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 5.49
- Longitudinal: 5.13
- Overall: 5.22
Hull space for machinery, storage, compartmentation is excellent

Operational depth:522 feet
Emergency depth: 835 feet
Crush depth: 1,305 feet
10 tons for ballast
4 tons for misc weight

------------------------------------------------------------------------

XSS/MSS-2, Atlantean Midgit sub laid down 1932

12 additional units laid down, MSS 3 through 10 in 1933 and MSS-1 and MSS-2 in 1935 when XSS-1 and 2 were sold to Mexico.

Displacement:
59 t light; 60 t standard; 61 t normal; 62 t full load

Dimensions: Length overall / water x beam x draught
72.00 ft / 72.00 ft x 8.75 ft x 5.50 ft (normal load)
21.95 m / 21.95 m x 2.67 m x 1.68 m

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 1 shaft, 19 shp / 14 Kw = 6.75 kts
Range 1,500nm at 5.00 kts
Bunker at max displacement = 2 tons

Complement:
10 - 14

Cost:
£0.010 million / $0.039 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 1 tons, 0.9 %
Hull, fittings & equipment: 43 tons, 69.4 %
Fuel, ammunition & stores: 2 tons, 3.6 %
Miscellaneous weights: 16 tons, 26.1 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
94 lbs / 42 Kg = 0.9 x 6 " / 152 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.1 ft / 0.0 m
Roll period: 10.2 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.620
Length to Beam Ratio: 8.23 : 1
'Natural speed' for length: 8.49 kts
Power going to wave formation at top speed: 33 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 32.8 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 461 Square feet or 43 Square metres
Displacement factor (Displacement / loading): 358 %
Structure weight / hull surface area: 63 lbs/sq ft or 305 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 5.39
- Longitudinal: 3.44
- Overall: 3.85
Hull space for machinery, storage, compartmentation is excellent

Operational depth: 385 feet
Emergency depth: 616 feet
Crush Depth: 962 feet
10 tons for ballast
6 tons for misc weight

XSS-3 class experimental submarine, renamed Novarum
Quite similar to the D-22 class except built without armament (8 tons)
200 tons for ballast
18 tons for Rostrum apparatus (1931)
10 tons for Fallax system (1931, removed 1942)



Modified D-22 class sub, used to test new experimental systems. The Rostrum device and Fallax system were the first systems tested which were later used on the R-98 class ships. XSS-3 was refitted in 1942 to test "Placidus" (4 tons) "Multiplex" (1 ton) and Gemini A and B submarine radars (5 tons). Gemini A was a series of radar antenna's fitted to the conning tower casing to provide a 180 degree radar coverage forward. Gemini B was a retractable radar set with a full 360 degree coverage. Gemini A was envisioned as a quick way to equip older subs with radar but it proved somewhat troublesome and was abandoned. Most likely will be refitted to serve as a training sub once current systems have been fully tested.

Two large subs planned for 1944. With rumors of various nations building Subs able to carry seaplanes, manned torpedo's and other equipment it was determined that exploration of this type of Sub was warranted. Like Japanese floatplane subs these ships used a twin pressure hull layout with a large pressure compartment outside the main hull. The placement of this compartment varied between the two ships, aft of the conning tower on Perch and forward on Permit. The two ships also carried a catapult and crane to launch and recover floatplanes, positioned to correspond to the placement of the hangar. Before the ships were laid down the area between the hangar and catapult was modified so that a landing craft or small amphibious transport could egress and be lowered into the water.

Type 43 Experimental class Floatplane Submarine

Names Perch (SSF-14), Permit (SSF-15)

Date: 1940-44
Type: Oceanic
Length: 107.0m (351.05 ft)
Beam: 10.1m (32.81 ft)
Draft: 6.2m (20.34 ft)
Crush depth: 300m
Light Displacement 2300t
Loaded Displacement 2690t
Full Displacement 3350t
wt fuel&batts: 700t
Reserve buoyancy: 20%

Armament:
- 1 x 7.5cm gun (4.9t)
- 6 x 21" TT (bow)
- 40 tons for mines or reload torpedoes
ElecHP: 4800hp
DieselHP: 11500hp
Speed:
- Max Surf Speed: 20.2 knots
- Max Sub Speed: 10.2 knots
Range:
- Surfaced: 12576nm@10 knots
- Submerged: 55nm@6 knots / 149nm@4 knots
Tons Oil: 350.0t
Tons Battery: 350.0t
Miscellaneous Weight: 489 tons

Crew: 90

XSS-4 midget test sub

Five Midget subs, XSS-4 through 8 were built in early 1945 to test out a new streamlined hull design based on Hilda Lyon's notable invention.

Length: 5.5 meters
Beam: 1.8 meter
Displacement: 2.5 tons
Engine XSS-4,5 and 6 used various torpedo motors while XSS-7 and 8 used Closed-Cycle engine's
Speed: Maximum 10 kts surfaced, 17kts submerged
Operating depth: 56 meters
Endurance : 90 miles submerged
Armament: None, though experiments with 1 x 21" torpedo (underslung)and various mines and charges were carried out.
Crew: 1

Alpha class experimental sub

Date: 1945
Type: Coastal
Length: 55.0m
Beam: 5.4m
Draft: 5.4m
Crush depth: 225m
Light Displacement: 700t
Loaded Displacement: 731t
Full Displacement: 802t
wt fuel&batts: 175t
Reserve buoyancy: 9%

Armament:
- 4 x 533mm torpedo tubes (6t for 4x reloads)
ElectricHP: 5600hp
DieselHP: 900hp
Speed:
- Max Surf Speed: 11.5 knots
- Max Sub Speed: 20.9 knots
Range:
- Surfaced: 2100nm@10 knots
- Submerged: 209nm@6 knots / 4nm @20.8 knots
Tons Oil: 25.0t
Tons Battery: 150.0t
Miscellaneous Weight: 13 ton

Crew: 34

D-1 class , Atlantean Fleet submarine laid down 1916, rearmed 1919 Orriginally armed with a single 5.5" gun forward, refited in 1919
(resimed to remove flaws, most notably the freeboard issue) taken out of service

D-1 to 8

Displacement:
1,323 t light; 1,359 t standard; 1,532 t normal; 1,671 t full load

Dimensions: Length overall / water x beam x draught
275.00 ft / 275.00 ft x 26.00 ft x 15.00 ft (normal load)
83.82 m / 83.82 m x 7.92 m x 4.57 m

Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1916 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 65 lbs / 30 kg
Shells per gun, main battery: 150
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 1,871 shp / 1,396 Kw = 15.00 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 311 tons

Complement:
122 - 159

Cost:
£0.103 million / $0.412 million

Distribution of weights at normal displacement:
Armament: 8 tons, 0.5 %
Machinery: 70 tons, 4.6 %
Hull, fittings & equipment: 915 tons, 59.7 %
Fuel, ammunition & stores: 209 tons, 13.7 %
Miscellaneous weights: 330 tons, 21.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,314 lbs / 596 Kg = 41.1 x 4.0 " / 102 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.12
Metacentric height 0.8 ft / 0.3 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 10.58 : 1
'Natural speed' for length: 16.58 kts
Power going to wave formation at top speed: 35 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 61.7 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 4,764 Square feet or 443 Square metres
Displacement factor (Displacement / loading): 287 %
Structure weight / hull surface area: 134 lbs/sq ft or 652 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.92
- Longitudinal: 1.51
- Overall: 1.92
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

D-9 class , Atlantean Fleet submarine laid down 1916
(resimed to remove flaws, most notably the freeboard issue)
Orriginally armed with 2x5.5" guns, refited in 1920, taken out of service

D-9 to 21

Displacement:
1,323 t light; 1,359 t standard; 1,532 t normal; 1,671 t full load

Dimensions: Length overall / water x beam x draught
275.00 ft / 275.00 ft x 26.00 ft x 15.00 ft (normal load)
83.82 m / 83.82 m x 7.92 m x 4.57 m

Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1916 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
2 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1916 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread, all raised mounts
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1916 Model
Machine guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 65 lbs / 30 kg
Shells per gun, main battery: 150
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 2,363 shp / 1,763 Kw = 16.00 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 311 tons

Complement:
122 - 159

Cost:
£0.107 million / $0.429 million

Distribution of weights at normal displacement:
Armament: 8 tons, 0.5 %
Machinery: 88 tons, 5.7 %
Hull, fittings & equipment: 897 tons, 58.5 %
Fuel, ammunition & stores: 209 tons, 13.7 %
Miscellaneous weights: 330 tons, 21.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,203 lbs / 546 Kg = 37.6 x 4.0 " / 102 mm shells or 0.8 torpedoes
Stability (Unstable if below 1.00): 1.11
Metacentric height 0.8 ft / 0.2 m
Roll period: 12.1 seconds
Steadiness - As gun platform (Average = 50 %): 0 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.500
Length to Beam Ratio: 10.58 : 1
'Natural speed' for length: 16.58 kts
Power going to wave formation at top speed: 38 %
Trim (Max stability = 0, Max steadiness = 100): 50
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: 0.00 ft / 0.00 m
- Forecastle (20 %): 0.00 ft / 0.00 m
- Mid (50 %): 0.00 ft / 0.00 m
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.00 ft / 0.00 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 67.1 %
- Above water (accommodation/working, high = better): 0.0 %
Waterplane Area: 4,764 Square feet or 443 Square metres
Displacement factor (Displacement / loading): 268 %
Structure weight / hull surface area: 131 lbs/sq ft or 639 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.83
- Longitudinal: 1.48
- Overall: 1.88
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

orriginal flawed sim....

D-9 class Submarine, Enter country Enter ship type laid down 1918

Displacement:
1,333 t light; 1,371 t standard; 1,532 t normal; 1,661 t full load

Dimensions: Length overall / water x beam x draught
276.06 ft / 275.00 ft x 26.00 ft x 15.00 ft (normal load)
84.14 m / 83.82 m x 7.92 m x 4.57 m

Armament:
2 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1918 Model
Breech loading guns in deck mounts
on centreline ends, evenly spread
2 - 1.00" / 25.4 mm guns (1x2 guns), 0.50lbs / 0.23kg shells, 1918 Model
Anti-aircraft guns in deck mount
on centreline aft
2 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1918 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 65 lbs / 30 kg
Shells per gun, main battery: 200
5 - 21.0" / 533.4 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 2,363 shp / 1,763 Kw = 16.00 kts
Range 8,000nm at 10.00 kts
Bunker at max displacement = 290 tons

Complement:
122 - 159

Cost:
£0.131 million / $0.523 million

Distribution of weights at normal displacement:
Armament: 8 tons, 0.5 %
Machinery: 85 tons, 5.6 %
Hull, fittings & equipment: 910 tons, 59.4 %
Fuel, ammunition & stores: 199 tons, 13.0 %
Miscellaneous weights: 330 tons, 21.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,660 lbs / 753 Kg = 51.9 x 4.0 " / 102 mm shells or 0.9 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.7 ft / 0.2 m
Roll period: 13.4 seconds
Steadiness - As gun platform (Average = 50 %): 30 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 0.43

Hull form characteristics:
Hull has low quarterdeck
Block coefficient: 0.500
Length to Beam Ratio: 10.58 : 1
'Natural speed' for length: 16.58 kts
Power going to wave formation at top speed: 38 %
Trim (Max stability = 0, Max steadiness = 100): 42
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: 6.00 ft / 1.83 m
- Forecastle (20 %): 5.00 ft / 1.52 m
- Mid (50 %): 5.00 ft / 1.52 m
- Quarterdeck (15 %): 4.50 ft / 1.37 m (5.00 ft / 1.52 m before break)
- Stern: 4.00 ft / 1.22 m
- Average freeboard: 4.97 ft / 1.51 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 66.4 %
- Above water (accommodation/working, high = better): 37.2 %
Waterplane Area: 4,764 Square feet or 443 Square metres
Displacement factor (Displacement / loading): 271 %
Structure weight / hull surface area: 113 lbs/sq ft or 550 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 2.86
- Longitudinal: 2.66
- Overall: 2.71
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is extremely poor
Caution: Lacks seaworthiness - very limited seakeeping ability

Operational diving depth: 262 feet / 78.6 meters
Emergency diving depth: 419 feet / 125.76 meters
Crush depth: 655 feet / 196.5 meters

Torpedo tubes: 4 forward, 1 aft

R-1 to 8 similar to the R-26 type but with reduced range and speed.

R-9 to 12, similar to the R-26 type but with reduced range and speed.

R-14 to 25, similar to the R-26 type but with reduced range and speed

Coastal submarines


R-26 to 37

R-26 class sub, Atlantis Coastal submarine laid down 1918, Sold to Mexico in 1937

Displacement:
270 t light; 277 t standard; 292 t normal; 304 t full load

Dimensions: Length overall / water x beam x draught
132.01 ft / 132.00 ft x 15.00 ft x 12.00 ft (normal load)
40.24 m / 40.23 m x 4.57 m x 3.66 m

Armament:
1 - 2.95" / 75 mm guns in single mounts, 12.84lbs / 5.82kg shells, 1918 Model
Breech loading gun in deck mount
on centreline forward
2 - 1.00" / 25 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1918 Model
Anti-aircraft guns in deck mounts
on centreline, evenly spread
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 150
3 - 21.0" / 533.4 mm submerged torpedo tubes: 2 forward, 1 aft

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 850 shp / 634 Kw = 15.00 kts
Range 5,600nm at 6.00 kts
Bunker at max displacement = 27 tons

Complement:
17 - 23

Cost:
£0.030 million / $0.122 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.6 %
Machinery: 31 tons, 10.5 %
Hull, fittings & equipment: 163 tons, 55.7 %
Fuel, ammunition & stores: 22 tons, 7.5 %
Miscellaneous weights: 75 tons, 25.7 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
22 lbs / 10 Kg = 1.7 x 3.0 " / 75 mm shells or 0.0 torpedoes
Stability (Unstable if below 1.00): 0.84
Metacentric height 0.2 ft / 0.1 m
Roll period: 14.1 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.430
Length to Beam Ratio: 8.80 : 1
'Natural speed' for length: 11.49 kts
Power going to wave formation at top speed: 52 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 0.10 ft / 0.03 m
- Forecastle (30 %): 0.10 ft / 0.03 m
- Mid (0 %): 0.10 ft / 0.03 m
- Quarterdeck (55 %): 0.10 ft / 0.03 m
- Stern: 0.10 ft / 0.03 m
- Average freeboard: 0.10 ft / 0.03 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 185.5 %
- Above water (accommodation/working, high = better): 0.7 %
Waterplane Area: 1,243 Square feet or 116 Square metres
Displacement factor (Displacement / loading): 194 %
Structure weight / hull surface area: 76 lbs/sq ft or 370 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.20
- Longitudinal: 3.95
- Overall: 3.27

operational diving depth: 327 feet / 98.1 meters
Emergency diving depth: 500 feet / 156.9 meters
Crush depth: 782 feet / 245.25 meters

Coastal submarines

R-38 to 61, taken out of service as R-98 class came into service, awaiting disposal.

R-38 class sub, Atlantean Coastal submarine laid down 1919

Displacement:
277 t light; 285 t standard; 300 t normal; 312 t full load

Dimensions: Length overall / water x beam x draught
134.01 ft / 134.00 ft x 15.20 ft x 12.00 ft (normal load)
40.85 m / 40.84 m x 4.63 m x 3.66 m

Armament:
2 - 2.95" / 75 mm guns in single mounts, 12.84lbs / 5.82kg shells, 1919 Model
Breech loading guns in deck mounts
on centreline, evenly spread
2 - 1.00" / 25 mm guns (1x2 guns), 0.50lbs / 0.23kg shells, 1919 Model
Breech loading guns in deck mount
on centreline
Weight of broadside 27 lbs / 12 kg
Shells per gun, main battery: 150
3 - 21.0" / 533.4 mm submerged torpedo tubes: 2 forward, 1 aft

Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 859 shp / 641 Kw = 15.00 kts
Range 5,800nm at 6.00 kts
Bunker at max displacement = 27 tons

Complement:
18 - 23

Cost:
£0.037 million / $0.146 million

Distribution of weights at normal displacement:
Armament: 3 tons, 1.1 %
Machinery: 31 tons, 10.2 %
Hull, fittings & equipment: 163 tons, 54.3 %
Fuel, ammunition & stores: 23 tons, 7.8 %
Miscellaneous weights: 80 tons, 26.6 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
21 lbs / 10 Kg = 1.7 x 3.0 " / 75 mm shells or 0.0 torpedoes
Stability (Unstable if below 1.00): 0.84
Metacentric height 0.2 ft / 0.1 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 1 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.00

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.430
Length to Beam Ratio: 8.82 : 1
'Natural speed' for length: 11.58 kts
Power going to wave formation at top speed: 51 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 5.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 0.10 ft / 0.03 m
- Forecastle (30 %): 0.10 ft / 0.03 m
- Mid (0 %): 0.10 ft / 0.03 m
- Quarterdeck (55 %): 0.10 ft / 0.03 m
- Stern: 0.10 ft / 0.03 m
- Average freeboard: 0.10 ft / 0.03 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 186.9 %
- Above water (accommodation/working, high = better): 0.7 %
Waterplane Area: 1,279 Square feet or 119 Square metres
Displacement factor (Displacement / loading): 179 %
Structure weight / hull surface area: 74 lbs/sq ft or 363 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.06
- Longitudinal: 3.77
- Overall: 3.13

operational diving depth: 313 feet / 93.9 meters
Emergency diving depth: 500 feet / 150.24
Crush depth: 782 feet / 234.75 meters