Ships in Class
Brute laid down 1935
Displacement:
1,899 t light; 1,966 t standard; 2,656 t normal; 3,208 t full load
Dimensions: Length overall / water x beam x draught
304.05 ft / 295.28 ft x 49.21 ft x 9.84 ft (normal load)
92.68 m / 90.00 m x 15.00 m x 3.00 m
Armament:
4 - 0.98" / 25.0 mm guns (2x2 guns), 0.55lbs / 0.25kg shells, 1935 Model
Anti-aircraft guns in deck mounts
on side, all forward
4 - 1.85" / 47.0 mm guns (1x4 guns), 3.86lbs / 1.75kg shells, 1935 Model
Anti-aircraft guns in deck mount
on centreline aft
Weight of broadside 18 lbs / 8 kg
Shells per gun, main battery: 1,000
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Ends: Unarmoured
- Torpedo Bulkhead:
0.39" / 10 mm 213.25 ft / 65.00 m 16.40 ft / 5.00 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
2nd: 0.39" / 10 mm 0.39" / 10 mm -
Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 4,000 shp / 2,984 Kw = 17.00 kts
Range 10,440nm at 16.00 kts
Bunker at max displacement = 1,242 tons
Complement:
184 - 240
Cost:
£0.427 million / $1.708 million
Distribution of weights at normal displacement:
Armament: 2 tons, 0.1 %
Armour: 52 tons, 2.0 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 51 tons, 1.9 %
- Armament: 1 tons, 0.0 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 114 tons, 4.3 %
Hull, fittings & equipment: 1,181 tons, 44.5 %
Fuel, ammunition & stores: 758 tons, 28.5 %
Miscellaneous weights: 550 tons, 20.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
13,437 lbs / 6,095 Kg = 28,185.2 x 1.0 " / 25 mm shells or 4.0 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 2.1 ft / 0.6 m
Roll period: 14.3 seconds
Steadiness - As gun platform (Average = 50 %): 94 %
- Recoil effect (Restricted arc if above 1.00): 0.01
Seaboat quality (Average = 1.00): 2.00
Hull form characteristics:
Hull has rise forward of midbreak
and transom stern
Block coefficient: 0.650
Length to Beam Ratio: 6.00 : 1
'Natural speed' for length: 20.13 kts
Power going to wave formation at top speed: 49 %
Trim (Max stability = 0, Max steadiness = 100): 47
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 3.28 ft / 1.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 31.17 ft / 9.50 m
- Forecastle (20 %): 26.25 ft / 8.00 m
- Mid (60 %): 24.61 ft / 7.50 m (16.40 ft / 5.00 m aft of break)
- Quarterdeck (15 %): 16.40 ft / 5.00 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 22.38 ft / 6.82 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 65.5 %
- Above water (accommodation/working, high = better): 264.0 %
Waterplane Area: 11,614 Square feet or 1,079 Square metres
Displacement factor (Displacement / loading): 315 %
Structure weight / hull surface area: 60 lbs/sq ft or 293 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.89
- Longitudinal: 7.06
- Overall: 1.10
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
5000miles at 80% power = 337tons main engines
2x5000hp Fiat-Guidoni Diesels + auxiliaries = 100tons
5000miles at 80% power = 1.6tons/hour
Speed with both engines at 80% = 22.6knts
Time to cover 5000nm=221hrs = 353tons fuel for Fiat diesels
Total fuel = 337+353 = 690tons
450tons = supplies/cranes/gensets etc.
Built to 1.10hull strength with thicker hull plates.
Sim and Drawing by Red Admiral.