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Gallant class, French Destroyers laid down 1926
Displacement:
1,350 t light; 1,398 t standard;
1,554 t normal; 1,678 t full load
Dimensions: Length overall / water x beam x draught
360.89 ft / 360.89 ft x
32.81 ft x 11.48 ft (normal load)
110.00 m / 110.00 m x 10.00 m x 3.50 m
Armament:
3 - 4.72" / 120 mm guns
in single mounts, 61.73lbs / 28.00kg shells, 1926 Model
Dual purpose guns in deck mounts
on centreline ends, majority
forward, 1 raised mount
8 - 1.57" / 40.0 mm guns (4x2 guns), 1.95lbs / 0.89kg shells, 1926 Model
Anti-aircraft guns
in deck mounts
on side, all amidships
4 - 0.50" / 12.7 mm guns in single mounts, 0.06lbs / 0.03kg shells, 1926 Model
Machine guns in deck mounts
on side, evenly spread
Weight of broadside 201 lbs / 91 kg
Shells per gun, main
battery: 150
9 - 21.0" / 533 mm above water torpedoes
40 tons depth charges/mines
Armour:
- Gun armour:
Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm 0.20" / 5 mm -
2nd: 0.98" / 25 mm - -
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 35,857 shp / 26,750 Kw = 34.50 kts
Range 6,000nm at
12.00 kts (Bunkerage = 280 tons)
Complement:
123 - 160
Cost:
£0.624 million / $2.498 million
Distribution
of weights at normal displacement:
Armament: 22 tons, 1.4 %
Armour: 7 tons, 0.4 %
- Belts: 0 tons, 0.0 %
-
Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 7 tons, 0.4 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons,
0.0 %
Machinery: 823 tons, 53.0 %
Hull, fittings & equipment: 458 tons, 29.5 %
Fuel, ammunition & stores:
204 tons, 13.1 %
Miscellaneous weights: 40 tons, 2.6 %
Overall survivability and seakeeping ability:
Survivability
(Non-critical penetrating hits needed to sink ship):
426 lbs / 193 Kg = 8.1 x 4.7 " / 120 mm shells or 0.3 torpedoes
Stability
(Unstable if below 1.00): 1.30
Metacentric height 1.5 ft / 0.5 m
Roll period: 11.2 seconds
Steadiness - As gun
platform (Average = 50 %): 70 %
- Recoil effect (Restricted arc if above 1.00): 0.20
Seaboat quality (Average = 1.00):
1.04
Hull form characteristics:
Hull has a flush deck
and transom stern
Block coefficient: 0.400
Length
to Beam Ratio: 11.00 : 1
'Natural speed' for length: 21.80 kts
Power going to wave formation at top speed: 66 %
Trim
(Max stability = 0, Max steadiness = 100): 67
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: 21.33 ft / 6.50 m
-
Forecastle (20 %): 15.09 ft / 4.60 m
- Mid (50 %): 13.12 ft / 4.00 m
- Quarterdeck (15 %): 13.12 ft / 4.00 m
-
Stern: 13.12 ft / 4.00 m
- Average freeboard: 14.31 ft / 4.36 m
Ship space, strength and comments:
Space -
Hull below water (magazines/engines, low = better): 184.7 %
- Above water (accommodation/working, high = better): 75.9
%
Waterplane Area: 7,564 Square feet or 703 Square metres
Displacement factor (Displacement / loading): 62 %
Structure
weight / hull surface area: 31 lbs/sq ft or 152 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
-
Longitudinal: 1.74
- Overall: 0.57
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation
and workspaces is cramped
Ship has slow, easy roll, a good, steady gun platform
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