WesWorld

SC-1 Subchaser

P-1 Patrol Boat

P-11 Patrol Boat

SC-7 Submarine Chaser

SC-1 Class Submarine Chaser

SC-1, laid down 1931
SC-2, laid down 1931
SC-3, laid down 1932
SC-4, laid down 1932
SC-5, laid down 1932
SC-6, laid down 1932

(Okay - it's a 1932 lay-down date, but with a hull strength that high, I don't think we need an edit)

Improved Sierra, Persian subchaser laid down 1932

Displacement:
289 t light; 299 t standard; 330 t normal; 355 t full load

Dimensions: Length overall / water x beam x draught
213.08 ft / 210.00 ft x 20.00 ft x 5.00 ft (normal load)
64.95 m / 64.01 m x 6.10 m x 1.52 m

Armament:
2 - 2.95" / 75.0 mm guns in single mounts, 13.00lbs / 5.90kg shells, 1932 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 0.98" / 25.0 mm guns in single mounts, 0.57lbs / 0.26kg shells, 1932 Model
Anti-aircraft guns in deck mounts
on side ends, evenly spread
Weight of broadside 28 lbs / 13 kg
Shells per gun, main battery: 150

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.01" / 51 mm 0.98" / 25 mm 0.79" / 20 mm
2nd: 0.98" / 25 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 1,968 shp / 1,468 Kw = 19.00 kts
Range 3,000nm at 12.00 kts
Bunker at max displacement = 57 tons

Complement:
38 - 50

Cost:
£0.096 million / $0.385 million

Distribution of weights at normal displacement:
Armament: 3 tons, 1.0 %
Armour: 6 tons, 1.9 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 6 tons, 1.9 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 58 tons, 17.6 %
Hull, fittings & equipment: 212 tons, 64.1 %
Fuel, ammunition & stores: 41 tons, 12.3 %
Miscellaneous weights: 10 tons, 3.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
716 lbs / 325 Kg = 55.7 x 3.0 " / 75 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 0.5 ft / 0.2 m
Roll period: 11.5 seconds
Steadiness - As gun platform (Average = 50 %): 56 %
- Recoil effect (Restricted arc if above 1.00): 0.22
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.550
Length to Beam Ratio: 10.50 : 1
'Natural speed' for length: 14.49 kts
Power going to wave formation at top speed: 53 %
Trim (Max stability = 0, Max steadiness = 100): 46
Bow angle (Positive = bow angles forward): 15.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 11.50 ft / 3.51 m
- Forecastle (20 %): 9.00 ft / 2.74 m
- Mid (60 %): 7.00 ft / 2.13 m
- Quarterdeck (15 %): 7.00 ft / 2.13 m
- Stern: 7.00 ft / 2.13 m
- Average freeboard: 8.00 ft / 2.44 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 69.5 %
- Above water (accommodation/working, high = better): 108.5 %
Waterplane Area: 2,843 Square feet or 264 Square metres
Displacement factor (Displacement / loading): 206 %
Structure weight / hull surface area: 43 lbs/sq ft or 211 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.37
- Longitudinal: 2.54
- Overall: 1.46
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily

P-1 Class Patrol Boat

P-1 to P-10, laid down 1932

P-1, Persia Patrolboat laid down 1932

Displacement:
50 t light; 52 t standard; 56 t normal; 59 t full load

Dimensions: Length overall / water x beam x draught
72,39 ft / 72,18 ft x 11,48 ft x 5,91 ft (normal load)
22,07 m / 22,00 m x 3,50 m x 1,80 m

Armament:
1 - 2,95" / 75,0 mm guns in single mounts, 12,87lbs / 5,84kg shells, 1932 Model
Breech loading gun in deck mount
on centreline forward
2 - 0,98" / 25,0 mm guns (1x2 guns), 0,48lbs / 0,22kg shells, 1932 Model
Anti-aircraft guns in deck mount
on centreline aft
4 - 0,52" / 13,2 mm guns in single mounts, 0,07lbs / 0,03kg shells, 1932 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 14 lbs / 6 kg
Shells per gun, main battery: 75

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0,79" / 20 mm - -
2nd: 0,79" / 20 mm - -

Machinery:
Diesel Internal combustion motors,
Geared drive, 1 shaft, 714 shp / 532 Kw = 17,00 kts
Range 1 000nm at 11,00 kts
Bunker at max displacement = 7 tons

Complement:
9 - 13

Cost:
£0,028 million / $0,111 million

Distribution of weights at normal displacement:
Armament: 2 tons, 3,2 %
Armour: 1 tons, 2,5 %
- Belts: 0 tons, 0,0 %
- Torpedo bulkhead: 0 tons, 0,0 %
- Armament: 1 tons, 2,5 %
- Armour Deck: 0 tons, 0,0 %
- Conning Tower: 0 tons, 0,0 %
Machinery: 21 tons, 36,7 %
Hull, fittings & equipment: 27 tons, 47,9 %
Fuel, ammunition & stores: 5 tons, 9,7 %
Miscellaneous weights: 0 tons, 0,0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
36 lbs / 17 Kg = 2,8 x 3,0 " / 75 mm shells or 0,1 torpedoes
Stability (Unstable if below 1.00): 1,00
Metacentric height 0,2 ft / 0,1 m
Roll period: 11,0 seconds
Steadiness - As gun platform (Average = 50 %): 67 %
- Recoil effect (Restricted arc if above 1.00): 0,62
Seaboat quality (Average = 1.00): 1,21

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0,400
Length to Beam Ratio: 6,29 : 1
'Natural speed' for length: 8,50 kts
Power going to wave formation at top speed: 76 %
Trim (Max stability = 0, Max steadiness = 100): 55
Bow angle (Positive = bow angles forward): 1,50 degrees
Stern overhang: 0,00 ft / 0,00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 8,20 ft / 2,50 m
- Forecastle (20 %): 7,22 ft / 2,20 m
- Mid (50 %): 7,22 ft / 2,20 m
- Quarterdeck (15 %): 7,22 ft / 2,20 m
- Stern: 7,22 ft / 2,20 m
- Average freeboard: 7,30 ft / 2,22 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 141,9 %
- Above water (accommodation/working, high = better): 73,7 %
Waterplane Area: 482 Square feet or 45 Square metres
Displacement factor (Displacement / loading): 97 %
Structure weight / hull surface area: 17 lbs/sq ft or 83 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0,65
- Longitudinal: 28,84
- Overall: 0,95
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Good seaboat, rides out heavy weather easily

P-11 Class Patrol Boat

40 t patrol boats for coastal and harbor patrol duties

P-11 to 15, laid down 1941
P-16 to 17, laid down 1942
P-18 to 19, laid down 1943
P-20 to -21, laid down 1944

SC-7 Class Submarine Chaser

100 t submarine chasers for coastal escort duties

SC-7, laid down 1943
SC-8, laid down 1943
SC-9, laid down 1943
SC-10, laid down 1943
SC-11, laid down 1944
SC-12, laid down 1944
SC-13, laid down 1944
SC-14, laid down 1944
SC-15, laid down 1945
SC-16, laid down 1945

Enter ship name, Enter country Enter ship type laid down 1943

Displacement:
100 t light; 105 t standard; 111 t normal; 117 t full load

Dimensions: Length overall / water x beam x draught
109.37 ft / 107.28 ft x 16.40 ft x 4.92 ft (normal load)
33.33 m / 32.70 m x 5.00 m x 1.50 m

Armament:
2 - 1.46" / 37.0 mm guns in single mounts, 1.55lbs / 0.70kg shells, 1943 Model
Anti-aircraft guns in deck mounts
on centreline ends, evenly spread
2 - 0.79" / 20.0 mm guns in single mounts, 0.24lbs / 0.11kg shells, 1943 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 4 lbs / 2 kg
Shells per gun, main battery: 1,000

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

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 894 shp / 667 Kw = 17.06 kts
Range 2,000nm at 10.00 kts (Bunkerage = 12 tons)

Complement:
16 - 22

Cost:
£0.047 million / $0.186 million

Distribution of weights at normal displacement:
Armament: 0 tons, 0.4 %
Armour: 1 tons, 1.2 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 1 tons, 1.2 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 23 tons, 20.7 %
Hull, fittings & equipment: 51 tons, 45.9 %
Fuel, ammunition & stores: 11 tons, 10.2 %
Miscellaneous weights: 24 tons, 21.6 %
-5 t: Sonar
-10 t: DC, throwers, and 30 DC
-9 t: Weight reserve

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
194 lbs / 88 Kg = 125.6 x 1.5 " / 37 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.05
Metacentric height 0.4 ft / 0.1 m
Roll period: 11.4 seconds
Steadiness - As gun platform (Average = 50 %): 50 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.37

Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.450
Length to Beam Ratio: 6.54 : 1
'Natural speed' for length: 10.36 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 36
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: 11.81 ft / 3.60 m
- Forecastle (20 %): 7.87 ft / 2.40 m
- Mid (50 %): 7.87 ft / 2.40 m
- Quarterdeck (15 %): 7.87 ft / 2.40 m
- Stern: 7.87 ft / 2.40 m
- Average freeboard: 8.19 ft / 2.50 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 96.2 %
- Above water (accommodation/working, high = better): 105.2 %
Waterplane Area: 1,123 Square feet or 104 Square metres
Displacement factor (Displacement / loading): 148 %
Structure weight / hull surface area: 21 lbs/sq ft or 103 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.79
- Longitudinal: 10.01
- Overall: 1.02
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily