WesWorld

Aegir Class Submarine laid down 1915

SCRAPPED

Vessels-
K.D.M. Aegir
K.D.M. Galathea
K.D.M. Neptun
K.D.M. Ran
K.D.M. Triton


Displacement:
200 t light; 205 t standard; 218 t normal; 228 t full load
Loading submergence 33 tons/feet

Dimensions:
133.50 ft x 13.00 ft x 8.00 ft (normal load)
40.69 m x 3.96 m x 2.44 m

Armament:
1 - 1.00" / 25 mm guns
1 - 0.50" / 13 mm guns
Weight of broadside 1 lbs / 0 kg
3 - 18.0" / 457.2 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 706 shp / 527 Kw = 15.00 kts
Range 1,800nm at 10.00 kts

Complement:
28 - 36

Cost:
£0.016 million / $0.063 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Machinery: 27 tons, 12.3 %
Hull, fittings & equipment: 124 tons, 56.7 %
Fuel, ammunition & stores: 18 tons, 8.1 %
Miscellaneous weights: 50 tons, 22.9 %

Metacentric height 0.2

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.00
Shellfire needed to sink: 36 lbs / 16 Kg = 71.5 x 1.0 " / 25 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.0
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 1 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.00
Relative quality as seaboat: 0.00

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.34
Hull speed coefficient 'M': 6.77
'Natural speed' for length: 11.55 kts
Power going to wave formation at top speed: 55 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 174.4 %
Relative accommodation and working space: 0.8 %
(Average = 100%)
Displacement factor: 210 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 3.95
(Structure weight / hull surface area: 70 lbs / square foot or 342 Kg / square metre)
Relative longitudinal hull strength: 1.77
(for 0.10 ft / 0.03 m average freeboard, freeboard adjustment -6.95 ft)
Relative composite hull strength: 2.17

Diving Abilities: Normal = 217 feet, Emergency = 347 feet, Crush Depth = 542 feet

Bellona Class Submarine laid down 1918

SCRAPPED

Vessels-
K.D.M. Bellona - Lost (Accidental)
K.D.M. Flora
K.D.M. Rota
K.D.M. Thetis
K.D.M. Nymfen
K.D.M. Najaden

Displacement:
351 t light; 360 t standard; 380 t normal; 394 t full load
Loading submergence 46 tons/feet

Dimensions:
156.00 ft x 15.50 ft x 10.00 ft (normal load)
47.55 m x 4.72 m x 3.05 m

Armament:
1 - 3.00" / 76 mm guns
2 - 0.50" / 13 mm guns
Weight of broadside 14 lbs / 6 kg
4 - 18.0" / 457.2 mm submerged torpedo tubes

Machinery:
Diesel Internal combustion engines plus batteries,
Electric cruising motors plus geared drives, 2 shafts, 1,217 shp / 908 Kw = 16.00 kts
Range 2,200nm at 10.00 kts

Complement:
43 - 55

Cost:
£0.040 million / $0.159 million

Distribution of weights at normal displacement:
Armament: 2 tons, 0.4 %
Machinery: 44 tons, 11.6 %
Hull, fittings & equipment: 246 tons, 64.7 %
Fuel, ammunition & stores: 29 tons, 7.5 %
Miscellaneous weights: 60 tons, 15.8 %

Metacentric height 0.4

Remarks:
Hull space for machinery, storage & compartmentation is cramped
Room for accommodation & workspaces is extremely poor
Ship has quick, lively roll, not a steady gun platform
Caution: Lacks seaworthiness - very limited seakeeping ability

Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 95 lbs / 43 Kg = 7.1 x 3.0 " / 76 mm shells
(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)
Torpedoes needed to sink: 0.1
(Approx number of typical torpedo hits needed to sink ship)
Relative steadiness as gun platform: 1 %
(Average = 50 %)
Relative rocking effect from firing to beam: 0.00
Relative quality as seaboat: 0.00

Hull form characteristics:
Block coefficient: 0.550
Sharpness coefficient: 0.35
Hull speed coefficient 'M': 6.58
'Natural speed' for length: 12.49 kts
Power going to wave formation at top speed: 55 %
Trim: 50
(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:
Underwater volume absorbed by magazines and engineering spaces: 146.3 %
Relative accommodation and working space: 0.7 %
(Average = 100%)
Displacement factor: 235 %
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 4.39
(Structure weight / hull surface area: 98 lbs / square foot or 477 Kg / square metre)
Relative longitudinal hull strength: 2.28
(for 0.10 ft / 0.03 m average freeboard, freeboard adjustment -7.77 ft)
Relative composite hull strength: 2.68

Diving Abilities: Normal = 268 feet, Emergency = 429 feet, Crush Depth = 670 feet

Ue Class, Denmark Submarine laid down 1937

Ue 1 to Ue 60

Displacement:
353 t light; 362 t standard; 377 t normal; 389 t full load

Dimensions: Length overall / water x beam x draught
150.58 ft / 150.00 ft x 16.00 ft (Bulges 20.00 ft) x 11.00 ft (normal load)
45.90 m / 45.72 m x 4.88 m (Bulges 6.10 m) x 3.35 m

Armament:
1 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1937 Model
Machine gun in deck mount
on centreline amidships, 1 raised gun
2 - 0.51" / 13.0 mm guns in single mounts, 0.07lbs / 0.03kg shells, 1937 Model
Machine guns in deck mounts
on side, all amidships, all raised mounts - superfiring
Weight of broadside 0 lbs / 0 kg
Shells per gun, main battery: 3,000
5 - 17.7" / 450 mm submerged torpedo tubes

Armour:

- Conning tower: 0.79" / 20 mm

Machinery:
Diesel Internal combustion generators plus batteries,
Electric motors, 2 shafts, 930 shp / 694 Kw = 15.00 kts
Range 2,000nm at 10.00 kts
Bunker at max displacement = 27 tons

Complement:
42 - 55

Cost:
£0.087 million / $0.349 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.0 %
Armour: 1 tons, 0.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 0 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 1 tons, 0.2 %
Machinery: 26 tons, 6.8 %
Hull, fittings & equipment: 227 tons, 60.1 %
Fuel, ammunition & stores: 24 tons, 6.3 %
Miscellaneous weights: 100 tons, 26.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
119 lbs / 54 Kg = 489.5 x 0.8 " / 20 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.00
Metacentric height 0.3 ft / 0.1 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 5 %
- Recoil effect (Restricted arc if above 1.00): 0.00
Seaboat quality (Average = 1.00): 0.01

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.400
Length to Beam Ratio: 7.50 : 1
'Natural speed' for length: 12.25 kts
Power going to wave formation at top speed: 50 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 1.00 ft / 0.30 m
- Forecastle (20 %): 1.00 ft / 0.30 m
- Mid (50 %): 1.00 ft / 0.30 m (0.00 ft / 0.00 m aft of break)
- Quarterdeck (15 %): 0.00 ft / 0.00 m
- Stern: 0.00 ft / 0.00 m
- Average freeboard: 0.50 ft / 0.15 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 128.3 %
- Above water (accommodation/working, high = better): 3.1 %
Waterplane Area: 1,477 Square feet or 137 Square metres
Displacement factor (Displacement / loading): 247 %
Structure weight / hull surface area: 90 lbs/sq ft or 440 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 3.48
- Longitudinal: 3.00
- Overall: 3.11
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 - 311ft
Emergency depth - 466ft
Crush depth - 777ft