Submarines

[Walter]

SS-1 Holland type, Japan Submarine laid down 1904

Displacement:
   118 t light; 120 t standard; 122 t normal; 123 t full load

Dimensions: Length overall / water x beam x draught
   65.62 ft / 65.62 ft x 12.47 ft x 9.84 ft (normal load)
   20.00 m / 20.00 m x 3.80 m  x 3.00 m
   1 - 17.7" / 450 mm submerged torpedo tubes

Armour: (*)
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.31" / 8 mm     32.81 ft / 10.00 m   6.56 ft / 2.00 m
   Ends:   Unarmoured
     Main Belt covers 77 % of normal length

Machinery:
   Petrol Internal combustion generators plus batteries,
   Electric motors, 1 shaft, 58 shp / 43 Kw = 8.00 kts
   Range 200nm at 8.00 kts
   Bunker at max displacement = 3 tons

Complement:
   17 - 23

Cost:
   £0.005 million / $0.019 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Armour: 3 tons, 2.7 %
      - Belts: 3 tons, 2.7 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 5 tons, 4.3 %
   Hull, fittings & equipment: 87 tons, 71.5 %
   Fuel, ammunition & stores: 4 tons, 3.5 %
   Miscellaneous weights: 22 tons, 18.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     99 lbs / 45 Kg = 0.9 x 6 " / 152 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.02
   Metacentric height 0.2 ft / 0.1 m
   Roll period: 11.0 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: 0.530
   Length to Beam Ratio: 5.26 : 1
   'Natural speed' for length: 8.10 kts
   Power going to wave formation at top speed: 48 %
   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): 62.0 %
      - Above water (accommodation/working, high = better): 0.0 %
   Waterplane Area: 542 Square feet or 50 Square metres
   Displacement factor (Displacement / loading): 341 %
   Structure weight / hull surface area: 94 lbs/sq ft or 460 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 5.08
      - Longitudinal: 13.67
      - Overall: 5.61
   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

(*) Main belt used to sim the two torpedoes.
Surface displacement: 98 tons (standard), 93 tons (light)

[Walter]

SS-6 Modified Holland type, Japan Submarine laid down 1904

Displacement:
   89 t light; 91 t standard; 92 t normal; 93 t full load

Dimensions: Length overall / water x beam x draught
   82.02 ft / 82.02 ft x 9.84 ft x 7.55 ft (normal load)
   25.00 m / 25.00 m x 3.00 m  x 2.30 m
   1 - 17.7" / 450 mm submerged torpedo tubes

Armour: (*)
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   0.31" / 8 mm     32.81 ft / 10.00 m   6.56 ft / 2.00 m
   Ends:   Unarmoured
     Main Belt covers 62 % of normal length
     Main belt does not fully cover magazines and engineering spaces

Machinery:
   Petrol Internal combustion generators plus batteries,
   Electric motors, 1 shaft, 56 shp / 42 Kw = 8.50 kts
   Range 200nm at 8.00 kts
   Bunker at max displacement = 2 tons

Complement:
   14 - 19

Cost:
   £0.004 million / $0.015 million

Distribution of weights at normal displacement:
   Armament: 0 tons, 0.0 %
   Armour: 3 tons, 3.4 %
      - Belts: 3 tons, 3.4 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 0 tons, 0.0 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 5 tons, 5.5 %
   Hull, fittings & equipment: 65 tons, 70.2 %
   Fuel, ammunition & stores: 3 tons, 3.5 %
   Miscellaneous weights: 16 tons, 17.3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     69 lbs / 31 Kg = 0.6 x 6 " / 152 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.03
   Metacentric height 0.2 ft / 0.1 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: 0.530
   Length to Beam Ratio: 8.33 : 1
   'Natural speed' for length: 9.06 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): 68.1 %
      - Above water (accommodation/working, high = better): 0.0 %
   Waterplane Area: 534 Square feet or 50 Square metres
   Displacement factor (Displacement / loading): 314 %
   Structure weight / hull surface area: 72 lbs/sq ft or 352 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 4.98
      - Longitudinal: 5.05
      - Overall: 4.99
   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

(*) Main belt used to sim the two torpedoes.
Surface displacement: 75 tons (standard), 70 tons (light)

[Walter]

Y-1 class submarine


Screenshots from Soukai no Valkyria - Kokou no Oujo Lucia.
(1000t, 1910 type)
Ships: Y-1, Y-2, Y-3, Freya, Y-5, Y-6, Y-7, Y-8, Y-9, Y-10, Y-11, Y-12, Uldiana
Displacement: 791 tons (sf); 933 tons (sm); 1150 tons (total)
Length: 69,50 m (oa); 54,66 m (ph)
Beam: 6,3 m (oa); 4,15 (ph)
Draught: 3,79 m
Height: 7,95 m
Power: 2300 hp (sf); 1240 hp (sm)
Speed: 16,8 knots (sf); 10,3 knots (sm)
Range: 7370 miles at 8 knots (sf); 115 miles at 5 knots (sm)
Torpedo Tubes: 4 bow tubes, 1 stern tube.
Torpedoes: 12
Deck gun: one 75 mm canon, 264 rounds
Crew: 36
Max depth: ca. 50 m

Based on: http://www.uboat.net/wwi/types/index.html?type=U+66