spotted a few errors, and after corrections and a few tweaks....
Lake(a), Denmark Patrol boat laid down 1930
Displacement:
400 t light; 424 t standard; 537 t normal; 627 t full load
Dimensions: Length overall / water x beam x draught
185.08 ft / 175.00 ft x 27.00 ft x 8.00 ft (normal load)
56.41 m / 53.34 m x 8.23 m x 2.44 m
Armament:
2 - 4.72" / 120 mm guns in single mounts, 52.72lbs / 23.92kg shells, 1925 Model
Breech loading guns in deck mounts with hoists
on centreline, all forward, 1 raised mount
2 - 2.24" / 57.0 mm guns (1x2 guns), 5.65lbs / 2.56kg shells, 1927 Model
Dual purpose guns in deck mount
on side amidships, all raised guns
4 - 2.24" / 57.0 mm guns (2x2 guns), 5.65lbs / 2.56kg shells, 1927 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
12 - 0.79" / 20.0 mm guns (6x2 guns), 0.24lbs / 0.11kg shells, 1926 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, all raised mounts
Weight of broadside 142 lbs / 65 kg
Shells per gun, main battery: 150
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.97" / 50 mm 0.98" / 25 mm -
2nd: 0.79" / 20 mm 0.79" / 20 mm -
3rd: 0.79" / 20 mm 0.79" / 20 mm -
- Conning tower: 1.97" / 50 mm
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 2,393 shp / 1,785 Kw = 18.00 kts
Range 8,000nm at 12.00 kts
Bunker at max displacement = 203 tons
Complement:
55 - 72
Cost:
£0.163 million / $0.654 million
Distribution of weights at normal displacement:
Armament: 18 tons, 3.3 %
Armour: 19 tons, 3.5 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 16 tons, 3.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 3 tons, 0.5 %
Machinery: 73 tons, 13.5 %
Hull, fittings & equipment: 231 tons, 43.0 %
Fuel, ammunition & stores: 137 tons, 25.5 %
Miscellaneous weights: 60 tons, 11.2 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
872 lbs / 396 Kg = 16.5 x 4.7 " / 120 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.04
Metacentric height 0.8 ft / 0.2 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.60
Seaboat quality (Average = 1.00): 1.23
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.497
Length to Beam Ratio: 6.48 : 1
'Natural speed' for length: 13.23 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 57
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 14.00 ft / 4.27 m
- Forecastle (20 %): 14.00 ft / 4.27 m
- Mid (50 %): 14.00 ft / 4.27 m (6.00 ft / 1.83 m aft of break)
- Quarterdeck (15 %): 6.00 ft / 1.83 m
- Stern: 6.00 ft / 1.83 m
- Average freeboard: 10.00 ft / 3.05 m
Ship tends to be wet forward
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 82.3 %
- Above water (accommodation/working, high = better): 105.4 %
Waterplane Area: 3,140 Square feet or 292 Square metres
Displacement factor (Displacement / loading): 147 %
Structure weight / hull surface area: 44 lbs/sq ft or 215 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.86
- Longitudinal: 4.03
- Overall: 1.00
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily
50 D.C's carried