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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

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

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 )

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

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.

Given their shorter range and the large number of R-98's now in service the Dolphin class was refitted to serve as Radar picket subs with emphasis on making the ships as quiet as possible with streamlining and other measures and increasing their range. Given their new role dive depth was not considered an issue. The original armament, her stern torpedo tubes and conning tower was 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. 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 32, 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) Spearfish (SSF-10) ex-D-30, Salmon (SSF-11) ex-D-31, Swordfish (SSF-12) ex-D-32

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)

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

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

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

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.

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

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

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

(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

(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-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

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

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