HMS Icarus (1936)

HMSAS Immortelle (DD-1937)


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The H & I section of the interwar destroyers were the first destroyers to be designed with a DP armament from scratch. The Australis Navy had converted some older F-G style ships with the new twin 4.5" turret and this was a potent combination.

The twin 4.5" with its 85 degree AA capability was a great advance over the single 4.7" LA guns fitted to the early A-G series. That these guns were replaced was no surprise. Early trials of the 4.5" with composite shot showed that even with a combined weight of only 74 pounds per round, a high rate of fire was unable to be maintained. Thus the guns were kept with the standard 54 pound SAP/HE/AA rounds with the 20 pound bursting charge. The difference between the H & I types was in the torpedo sets, the H's having two quadruple sets, the I's had 2 quintuple sets, the first ships in the Royal Navy to carry the quintuple torpedo tube mounting.


Displacement 1400 tons std, 1900 tons full load
Length 331 ft
Breadth 33 ft
Draught 12 ft
Machinery 2 shaft steam turbines, 38,000shp
Speed 35 knots
Range 6000 miles at 15 knots
Armour nil
Armament 4 x 4.5" (2x2)

4 x 2pd (1x4)

4 x 20mm (1x2 2x1)

Aircraft nil
Torpedoes 8/10 x 21" (2x4/5)
Complement 150


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