Basillone class 1919/20
16 ships
Names:
Basilone, Furse, Borum, Avarice, partially reconstructed 1933 after engagement with Pirate ship SS Intrepida, Basilone damaged in resulting battle.
Foss, Cofer, Bull, Muir
Tyrant, Isla, Ault, Dent
Gore, Torch, Sylph, Expunge
Basilone, Furse, Borum, Avarice after 1933 rebuilds
Dent repaired and refitted to same standards in 1936 along with rest of class
Basilone, Atlantean Destroyer laid down 1919 (Engine 1933)
Displacement:
1,214 t light; 1,268 t standard; 1,348 t normal; 1,412 t full load
Dimensions: Length overall / water x beam x draught
337.99 ft / 325.00 ft x 32.00 ft x 10.75 ft (normal load)
103.02 m / 99.06 m x 9.75 m x 3.28 m
Armament:
4 - 4.50" / 114 mm guns (2x2 guns), 45.56lbs / 20.67kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline ends, evenly spread
4 - 1.58" / 40.0 mm guns (2x2 guns), 1.95lbs / 0.88kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
8 - 0.79" / 20.0 mm guns (2x4 guns), 0.24lbs / 0.11kg shells, 1919 Model
Breech loading guns in deck mounts
on side, evenly spread
8 - 0.50" / 12.7 mm guns (4x2 guns), 0.06lbs / 0.03kg shells, 1919 Model
Breech loading guns in deck mounts
on side, evenly spread
Weight of broadside 192 lbs / 87 kg
Shells per gun, main battery: 250
6 - 21.0" / 533.4 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 40,000 shp / 29,840 Kw = 33.98 kts
Range 5,000nm at 10.00 kts
Bunker at max displacement = 143 tons
Complement:
110 - 144
Cost:
£0.361 million / $1.443 million
Distribution of weights at normal displacement:
Armament: 24 tons, 1.8 %
Machinery: 733 tons, 54.4 %
Hull, fittings & equipment: 437 tons, 32.4 %
Fuel, ammunition & stores: 134 tons, 10.0 %
Miscellaneous weights: 20 tons, 1.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
308 lbs / 140 Kg = 6.8 x 4.5 " / 114 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 1.3 ft / 0.4 m
Roll period: 11.8 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.34
Seaboat quality (Average = 1.00): 0.88
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.422
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 18.03 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 30.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.50 ft / 6.86 m
- Forecastle (30 %): 20.00 ft / 6.10 m
- Mid (40 %): 20.00 ft / 6.10 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (10 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 14.30 ft / 4.36 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 191.6 %
- Above water (accommodation/working, high = better): 79.0 %
Waterplane Area: 6,493 Square feet or 603 Square metres
Displacement factor (Displacement / loading): 53 %
Structure weight / hull surface area: 33 lbs/sq ft or 163 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.51
- Longitudinal: 2.19
- Overall: 0.59
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather
11 tons for DC's and equipment
9 tons for sonar
Orriginal configuration
Basilone, Atlantis Destroyer laid down 1919
Displacement:
1,223 t light; 1,259 t standard; 1,348 t normal; 1,420 t full load
Dimensions: Length overall / water x beam x draught
330.63 ft / 325.00 ft x 32.00 ft x 10.75 ft (normal load)
100.78 m / 99.06 m x 9.75 m x 3.28 m
Armament:
3 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1919 Model
Breech loading guns in deck mounts with hoists
on centreline ends, majority forward, 1 raised mount
4 - 1.00" / 25.4 mm guns in single mounts, 0.50lbs / 0.23kg shells, 1919 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 98 lbs / 44 kg
Shells per gun, main battery: 150
6 - 21.0" / 533.4 mm above water torpedoes
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 45,514 shp / 33,953 Kw = 35.00 kts
Range 4,800nm at 10.00 kts
Bunker at max displacement = 161 tons
Complement:
110 - 144
Cost:
£0.370 million / $1.479 million
Distribution of weights at normal displacement:
Armament: 12 tons, 0.9 %
Machinery: 831 tons, 61.7 %
Hull, fittings & equipment: 360 tons, 26.7 %
Fuel, ammunition & stores: 125 tons, 9.3 %
Miscellaneous weights: 20 tons, 1.5 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
232 lbs / 105 Kg = 7.3 x 4.0 " / 102 mm shells or 0.2 torpedoes
Stability (Unstable if below 1.00): 1.29
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.2 seconds
Steadiness - As gun platform (Average = 50 %): 60 %
- Recoil effect (Restricted arc if above 1.00): 0.18
Seaboat quality (Average = 1.00): 0.82
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.422
Length to Beam Ratio: 10.16 : 1
'Natural speed' for length: 18.03 kts
Power going to wave formation at top speed: 71 %
Trim (Max stability = 0, Max steadiness = 100): 73
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: 21.00 ft / 6.40 m
- Forecastle (30 %): 20.00 ft / 6.10 m
- Mid (40 %): 20.00 ft / 6.10 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (10 %): 10.00 ft / 3.05 m
- Stern: 10.00 ft / 3.05 m
- Average freeboard: 14.12 ft / 4.30 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 207.3 %
- Above water (accommodation/working, high = better): 79.0 %
Waterplane Area: 6,493 Square feet or 603 Square metres
Displacement factor (Displacement / loading): 40 %
Structure weight / hull surface area: 28 lbs/sq ft or 136 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.43
- Longitudinal: 1.78
- Overall: 0.50
Hull space for machinery, storage, compartmentation is extremely poor
Room for accommodation and workspaces is cramped
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather