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DD32, Atlantis destroyer laid down 1916

Displacement:

1,243 t light; 1,281 t standard; 1,385 t normal; 1,462 t full load

Loading submergence 167 tons/feet

Dimensions:

324.00 ft x 32.00 ft x 11.00 ft (normal load)

98.76 m x 9.75 m x 3.35 m

Armament:

4 - 4.00" / 102 mm guns

2 - 1.00" / 25 mm AA guns

Weight of broadside 129 lbs / 59 kg

4 - 21.0" / 533.4 mm above water torpedoes

Machinery:

Oil fired boilers, steam turbines,

Direct drive, 2 shafts, 36,312 shp / 27,089 Kw = 33.05 kts

Range 5,000nm at 10.00 kts

Complement:

113 - 147

Cost:

£0.277 million / $1.108 million

Distribution of weights at normal displacement:

Armament: 16 tons, 1.2 %

Machinery: 802 tons, 57.9 %

Hull, fittings & equipment: 405 tons, 29.2 %

Fuel, ammunition & stores: 142 tons, 10.3 %

Miscellaneous weights: 20 tons, 1.4 %

Metacentric height 1.6

Remarks:

Caution: Hull subject to strain in open-sea

Hull space for machinery, storage & compartmentation is cramped

Room for accommodation & workspaces is adequate

Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.40

Shellfire needed to sink: 355 lbs / 161 Kg = 11.1 x 4.0 " / 102 mm shells

(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)

Torpedoes needed to sink: 0.2

(Approx number of typical torpedo hits needed to sink ship)

Relative steadiness as gun platform: 61 %

(Average = 50 %)

Relative rocking effect from firing to beam: 0.14

Relative quality as seaboat: 1.21

Hull form characteristics:

Block coefficient: 0.425

Sharpness coefficient: 0.30

Hull speed coefficient 'M': 8.88

'Natural speed' for length: 18.00 kts

Power going to wave formation at top speed: 69 %

Trim: 51

(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:

Underwater volume absorbed by magazines and engineering spaces: 197.2 %

Relative accommodation and working space: 115.7 %

(Average = 100%)

Displacement factor: 49 %

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.51

(Structure weight / hull surface area: 34 lbs / square foot or 166 Kg / square metre)

Relative longitudinal hull strength: 1.65

(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 5.80 ft)

Relative composite hull strength: 0.58

DD32, Atlantis destroyer laid down 1916

Displacement:

1,243 t light; 1,281 t standard; 1,385 t normal; 1,462 t full load

Loading submergence 167 tons/feet

Dimensions:

324.00 ft x 32.00 ft x 11.00 ft (normal load)

98.76 m x 9.75 m x 3.35 m

Armament:

4 - 4.00" / 102 mm guns

2 - 1.00" / 25 mm AA guns

Weight of broadside 129 lbs / 59 kg

4 - 21.0" / 533.4 mm above water torpedoes

Machinery:

Oil fired boilers, steam turbines,

Direct drive, 2 shafts, 36,312 shp / 27,089 Kw = 33.05 kts

Range 5,000nm at 10.00 kts

Complement:

113 - 147

Cost:

£0.277 million / $1.108 million

Distribution of weights at normal displacement:

Armament: 16 tons, 1.2 %

Machinery: 802 tons, 57.9 %

Hull, fittings & equipment: 405 tons, 29.2 %

Fuel, ammunition & stores: 142 tons, 10.3 %

Miscellaneous weights: 20 tons, 1.4 %

Metacentric height 1.6

Remarks:

Caution: Hull subject to strain in open-sea

Hull space for machinery, storage & compartmentation is cramped

Room for accommodation & workspaces is adequate

Good seaboat, rides out heavy weather easily

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.40

Shellfire needed to sink: 355 lbs / 161 Kg = 11.1 x 4.0 " / 102 mm shells

(Approx weight of penetrating shell hits needed to sink ship excluding critical hits)

Torpedoes needed to sink: 0.2

(Approx number of typical torpedo hits needed to sink ship)

Relative steadiness as gun platform: 61 %

(Average = 50 %)

Relative rocking effect from firing to beam: 0.14

Relative quality as seaboat: 1.21

Hull form characteristics:

Block coefficient: 0.425

Sharpness coefficient: 0.30

Hull speed coefficient 'M': 8.88

'Natural speed' for length: 18.00 kts

Power going to wave formation at top speed: 69 %

Trim: 51

(Maximise stabilty/flotation = 0, Maximise steadiness/seakeeping = 100)

Estimated hull characteristics & strength:

Underwater volume absorbed by magazines and engineering spaces: 197.2 %

Relative accommodation and working space: 115.7 %

(Average = 100%)

Displacement factor: 49 %

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.51

(Structure weight / hull surface area: 34 lbs / square foot or 166 Kg / square metre)

Relative longitudinal hull strength: 1.65

(for 16.00 ft / 4.88 m average freeboard, freeboard adjustment 5.80 ft)

Relative composite hull strength: 0.58

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