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French Audaciaux class destroyer, laid down 1921

Length, 100.0 m x Beam, 8.8 m x Depth, 3.6 m

1366 tonnes normal displacement (1231 tonnes standard)

Main battery: 3 x 12.0-cm (3 x 1; 1 superfiring)

AA battery: 4 x 3.7-cm

Light battery: 4 x 1.3-cm

Weight of broadside: 75 kg

8 TT, 53.0 cm in two quadruple mounts

50 tons depth charges

Hull unarmored

Maximum speed for 26049 shaft kw = 33.00 knots

Approximate cruising radius, 5100 nm / 12 knots

Typical complement: 112-146

Estimated cost, $1.667 million (£417,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea

conditions.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are cramped, with poor

watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 21 tonnes = 2 pct

Machinery ........................ 749 tonnes = 55 pct

Hull and fittings; equipment ..... 370 tonnes = 27 pct

Fuel, ammunition, stores ......... 176 tonnes = 13 pct

Miscellaneous weights ............ 50 tonnes = 4 pct

-----

1366 tonnes = 100 pct

Estimated metacentric height, 0.3 m

Displacement summary:

Light ship: 1190 tonnes

Standard displacement: 1231 tonnes

Normal service: 1366 tonnes

Full load: 1468 tonnes

Loading submergence 501 tonnes/metre

+++++++++++++++++++++++++

Visit my Russian/French fantasy fleet page:

http://admkuznetsov.tripod.com

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.17

Shellfire needed to sink: 132 kg = 5.5 x 12.0-cm shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 0.2

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.59

Relative quality as a seaboat: 1.20

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.43

Sharpness coefficient: 0.29

Hull speed coefficient 'M' = 9.04

'Natural speed' for length = 18.1 knots

Power going to wave formation

at top speed: 67 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 192 percent

Relative accommodation and working space: 57 percent

Displacement factor: 52 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.50

(Structure weight per square

metre of hull surface: 158 kg)

Relative longitudinal hull strength: 1.42

(for 4.51 m average freeboard;

freeboard adjustment +1.41 m)

Relative composite hull strength: 0.55

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

328.00 x 28.70 x 11.81; 14.81 -- Dimensions

0.43 -- Block coefficient

1921 -- Year laid down

33.00 / 5100 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

50 tons -- Miscellaneous weights

++++++++++

3 x 4.72; 3; 1 -- Main battery; turrets; superfiring

:

0 -- No secondary battery

4 x 1.46 -- Tertiary (QF/AA) battery

:

4 x 0.51 -- Fourth (light) battery

8 / 0 / 20.87 -- TT / submerged / size

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

0.00 -- No battery armor

(Note: For portability, values are stored in Anglo-American units)

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Length, 100.0 m x Beam, 8.8 m x Depth, 3.6 m

1366 tonnes normal displacement (1231 tonnes standard)

Main battery: 3 x 12.0-cm (3 x 1; 1 superfiring)

AA battery: 4 x 3.7-cm

Light battery: 4 x 1.3-cm

Weight of broadside: 75 kg

8 TT, 53.0 cm in two quadruple mounts

50 tons depth charges

Hull unarmored

Maximum speed for 26049 shaft kw = 33.00 knots

Approximate cruising radius, 5100 nm / 12 knots

Typical complement: 112-146

Estimated cost, $1.667 million (£417,000)

Remarks:

Caution: Hull structure is subject to strain in open-sea

conditions.

Ship has slow, easy roll; a good, steady gun platform.

Good seaboat; rides out heavy weather easily.

Magazines and engineering spaces are cramped, with poor

watertight subdivision.

Cramped ship; poor crew accommodation, limited working space.

Distribution of weights:

Percent

normal

displacement:

Armament ......................... 21 tonnes = 2 pct

Machinery ........................ 749 tonnes = 55 pct

Hull and fittings; equipment ..... 370 tonnes = 27 pct

Fuel, ammunition, stores ......... 176 tonnes = 13 pct

Miscellaneous weights ............ 50 tonnes = 4 pct

-----

1366 tonnes = 100 pct

Estimated metacentric height, 0.3 m

Displacement summary:

Light ship: 1190 tonnes

Standard displacement: 1231 tonnes

Normal service: 1366 tonnes

Full load: 1468 tonnes

Loading submergence 501 tonnes/metre

+++++++++++++++++++++++++

Visit my Russian/French fantasy fleet page:

http://admkuznetsov.tripod.com

Estimated overall survivability and seakeeping ability:

Relative margin of stability: 1.17

Shellfire needed to sink: 132 kg = 5.5 x 12.0-cm shells

(Approximates weight of penetrating

shell hits needed to sink ship,

not counting critical hits)

Torpedoes needed to sink: 0.2

(Approximates number of 'typical'

torpedo hits needed to sink ship)

Relative steadiness as gun platform, 70 percent

(50 percent is 'average')

Relative rocking effect from firing to beam, 0.59

Relative quality as a seaboat: 1.20

+++++++++++++++++++++++++

Hull form characteristics:

Block coefficient: 0.43

Sharpness coefficient: 0.29

Hull speed coefficient 'M' = 9.04

'Natural speed' for length = 18.1 knots

Power going to wave formation

at top speed: 67 percent

Estimated hull characteristics and strength:

Relative underwater volume absorbed by

magazines and engineering spaces: 192 percent

Relative accommodation and working space: 57 percent

Displacement factor: 52 percent

(Displacement relative to loading factors)

Relative cross-sectional hull strength: 0.50

(Structure weight per square

metre of hull surface: 158 kg)

Relative longitudinal hull strength: 1.42

(for 4.51 m average freeboard;

freeboard adjustment +1.41 m)

Relative composite hull strength: 0.55

+++++++++++++++++++++++++

[Machine-readable parameters: Spring Style v. 1.2.1]

328.00 x 28.70 x 11.81; 14.81 -- Dimensions

0.43 -- Block coefficient

1921 -- Year laid down

33.00 / 5100 / 12.00; Oil-fired turbine or equivalent -- Speed / radius / cruise

50 tons -- Miscellaneous weights

++++++++++

3 x 4.72; 3; 1 -- Main battery; turrets; superfiring

:

0 -- No secondary battery

4 x 1.46 -- Tertiary (QF/AA) battery

:

4 x 0.51 -- Fourth (light) battery

8 / 0 / 20.87 -- TT / submerged / size

++++++++++

0.00 -- No belt armor

0.00 / 0.00 -- Deck / CT

0.00 -- No battery armor

(Note: For portability, values are stored in Anglo-American units)

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

This is the main gun of the French Audaciaux class destroyer:

French 120mm/50

Caliber = 12.0 cm (4.7 inch)

Shell weight = 28 kg (62 lbs)

Muzzle velocity = 809 m/s (2653 fps)

Relative ballistic performance: 1.00

Muzzle energy = 9.162 megajoules = 3376.0 foot-tons

Relative muzzle energy: 1.00

Barrel length: 50 calibers

Elevation Range Time Velocity Fall Angle

2.5 deg 4500 meters 6.8 sec 562 m/s 3.2 deg

5.0 deg 7500 meters 12.8 sec 447 m/s 7.5 deg

7.5 deg 9700 meters 18.2 sec 382 m/s 12.3 deg

10.0 deg 11500 meters 23.3 sec 341 m/s 17.5 deg

12.5 deg 12900 meters 28.0 sec 316 m/s 22.7 deg

15.0 deg 14100 meters 32.6 sec 300 m/s 28.0 deg

20.0 deg 16100 meters 41.0 sec 286 m/s 37.5 deg

25.0 deg 17700 meters 49.0 sec 285 m/s 45.6 deg

30.0 deg 18900 meters 56.5 sec 291 m/s 52.2 deg

35.0 deg 19700 meters 63.6 sec 299 m/s 57.5 deg

40.0 deg 20100 meters 70.3 sec 309 m/s 61.9 deg

45.0 deg 20200 meters 76.7 sec 319 m/s 65.5 deg

50.0 deg 19900 meters 82.7 sec 329 m/s 68.7 deg

Armor Penetration - Vertical Belt Armor

(Relative armor quality, 1.00)

Maximum penetration: 24.47 cm

Elevation Range Belt Deck

2.5 deg 4600 meters 15 cm

5.9 deg 8400 meters 10 cm

12.1 deg 12700 meters ... 2 cm

17.3 deg 15100 meters 5 cm

25.9 deg 17900 meters ... 4 cm

42.6 deg 20200 meters ... 6 cm

Maximum range = 20300 meters at 43.6 deg elevation

French 120mm/50

Caliber = 12.0 cm (4.7 inch)

Shell weight = 28 kg (62 lbs)

Muzzle velocity = 809 m/s (2653 fps)

Relative ballistic performance: 1.00

Muzzle energy = 9.162 megajoules = 3376.0 foot-tons

Relative muzzle energy: 1.00

Barrel length: 50 calibers

Elevation Range Time Velocity Fall Angle

2.5 deg 4500 meters 6.8 sec 562 m/s 3.2 deg

5.0 deg 7500 meters 12.8 sec 447 m/s 7.5 deg

7.5 deg 9700 meters 18.2 sec 382 m/s 12.3 deg

10.0 deg 11500 meters 23.3 sec 341 m/s 17.5 deg

12.5 deg 12900 meters 28.0 sec 316 m/s 22.7 deg

15.0 deg 14100 meters 32.6 sec 300 m/s 28.0 deg

20.0 deg 16100 meters 41.0 sec 286 m/s 37.5 deg

25.0 deg 17700 meters 49.0 sec 285 m/s 45.6 deg

30.0 deg 18900 meters 56.5 sec 291 m/s 52.2 deg

35.0 deg 19700 meters 63.6 sec 299 m/s 57.5 deg

40.0 deg 20100 meters 70.3 sec 309 m/s 61.9 deg

45.0 deg 20200 meters 76.7 sec 319 m/s 65.5 deg

50.0 deg 19900 meters 82.7 sec 329 m/s 68.7 deg

Armor Penetration - Vertical Belt Armor

(Relative armor quality, 1.00)

Maximum penetration: 24.47 cm

Elevation Range Belt Deck

2.5 deg 4600 meters 15 cm

5.9 deg 8400 meters 10 cm

12.1 deg 12700 meters ... 2 cm

17.3 deg 15100 meters 5 cm

25.9 deg 17900 meters ... 4 cm

42.6 deg 20200 meters ... 6 cm

Maximum range = 20300 meters at 43.6 deg elevation

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