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Quoted
Owasco-class, High Endurance Cutter laid down 1946
Displacement:
1,125 t light; 1,215 t standard; 1,485 t normal; 1,701 t full load
Dimensions: Length overall / water x beam x draught
257.44 ft / 255.91 ft x 42.65 ft x 11.32 ft (normal load)
78.47 m / 78.00 m x 13.00 m x 3.45 m
Armament:
4 - 5.00" / 127 mm guns (2x2 guns), 55.16lbs / 25.02kg shells, 1946 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
8 - 1.50" / 38.1 mm guns (2x4 guns), 1.69lbs / 0.77kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 234 lbs / 106 kg
Shells per gun, main battery: 450
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm 0.20" / 5 mm
- Conning tower: 0.98" / 25 mm
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 2,532 shp / 1,889 Kw = 17.00 kts
Range 6,000nm at 17.00 kts
Bunker at max displacement = 485 tons
Complement:
119 - 155
Cost:
£0.538 million / $2.153 million
Distribution of weights at normal displacement:
Armament: 33 tons, 2.2 %
Armour: 9 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 6 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 63 tons, 4.3 %
Hull, fittings & equipment: 900 tons, 60.6 %
Fuel, ammunition & stores: 360 tons, 24.3 %
Miscellaneous weights: 120 tons, 8.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,899 lbs / 2,222 Kg = 78.4 x 5.0 " / 127 mm shells or 2.2 torpedoes
Stability (Unstable if below 1.00): 1.25
Metacentric height 2.1 ft / 0.6 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 77 %
- Recoil effect (Restricted arc if above 1.00): 0.19
Seaboat quality (Average = 1.00): 1.87
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.421
Length to Beam Ratio: 6.00 : 1
'Natural speed' for length: 19.35 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 41
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: 17.55 ft / 5.35 m
- Forecastle (25 %): 14.27 ft / 4.35 m
- Mid (50 %): 10.99 ft / 3.35 m
- Quarterdeck (15 %): 10.99 ft / 3.35 m
- Stern: 10.99 ft / 3.35 m
- Average freeboard: 12.55 ft / 3.83 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 43.8 %
- Above water (accommodation/working, high = better): 132.1 %
Waterplane Area: 7,068 Square feet or 657 Square metres
Displacement factor (Displacement / loading): 286 %
Structure weight / hull surface area: 88 lbs/sq ft or 428 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.36
- Longitudinal: 4.38
- Overall: 1.53
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
Quoted
Owasco-class, High Endurance Cutter laid down 1946
Displacement:
1,079 t light; 1,169 t standard; 1,485 t normal; 1,738 t full load
Dimensions: Length overall / water x beam x draught
257.44 ft / 255.91 ft x 42.65 ft x 11.32 ft (normal load)
78.47 m / 78.00 m x 13.00 m x 3.45 m
Armament:
4 - 5.00" / 127 mm guns (2x2 guns), 55.16lbs / 25.02kg shells, 1946 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, evenly spread
8 - 1.50" / 38.1 mm guns (2x4 guns), 1.69lbs / 0.77kg shells, 1946 Model
Anti-aircraft guns in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns (2x2 guns), 0.06lbs / 0.03kg shells, 1946 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 234 lbs / 106 kg
Shells per gun, main battery: 450
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm 0.20" / 5 mm
- Conning tower: 0.98" / 25 mm
Machinery:
Diesel Internal combustion generators,
Electric motors, 2 shafts, 2,979 shp / 2,222 Kw = 17.00 kts
Range 6,000nm at 17.00 kts
Bunker at max displacement = 568 tons
Complement:
119 - 155
Cost:
£0.538 million / $2.152 million
Distribution of weights at normal displacement:
Armament: 33 tons, 2.2 %
Armour: 9 tons, 0.6 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 6 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 74 tons, 5.0 %
Hull, fittings & equipment: 842 tons, 56.7 %
Fuel, ammunition & stores: 406 tons, 27.4 %
Miscellaneous weights: 120 tons, 8.1 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,596 lbs / 2,085 Kg = 73.5 x 5.0 " / 127 mm shells or 2.0 torpedoes
Stability (Unstable if below 1.00): 1.28
Metacentric height 2.2 ft / 0.7 m
Roll period: 12.2 seconds
Steadiness - As gun platform (Average = 50 %): 78 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 1.90
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.421
Length to Beam Ratio: 6.00 : 1
'Natural speed' for length: 16.00 kts
Power going to wave formation at top speed: 47 %
Trim (Max stability = 0, Max steadiness = 100): 41
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: 17.55 ft / 5.35 m
- Forecastle (25 %): 14.27 ft / 4.35 m
- Mid (50 %): 10.99 ft / 3.35 m
- Quarterdeck (15 %): 10.99 ft / 3.35 m
- Stern: 10.99 ft / 3.35 m
- Average freeboard: 12.55 ft / 3.83 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 46.2 %
- Above water (accommodation/working, high = better): 127.2 %
Waterplane Area: 6,808 Square feet or 632 Square metres
Displacement factor (Displacement / loading): 274 %
Structure weight / hull surface area: 83 lbs/sq ft or 405 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.29
- Longitudinal: 4.10
- Overall: 1.45
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather
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200 on order? Not a typo?
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I would ditch the 1.1-inch quad mount amidships – with the boats and handling gear it is not going to have very good sky arcs.
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200 are ordered. I never said when the order completes.
Quoted
Caution: Poor stability - excessive risk of capsizing
The question to ask really is how many will be laid down in FY1946. :P
Oh there is some tweaking to be done, I just dislike/haven't done ship sims like this so I throw it out there and adjust based on the feedback.
Also, one other minor detail is that the rules on hull strength less than 1.00 indicate ">24kn" which is 'greater than 24' and not 'greater than or equal to 24 knots'.
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