Details of Lightning

HMS Lightning was ordered as job number J4052 on 31 March 1938 as part of the build up of the Navy for a war with Germany that seemed inevitable. Two flotillas of eight ships were built these were to be the L and M class of fleet destroyer. A third flotilla was planned as an option but was never built.

Hawthorn Leslie & Co of Newcastle Upon Tyne were awarded the contract to build her, the machinery being supplied by Parsons. She was laid down on 15 November 1938 and launched nearly a year and a half later on 22 April 1940, shortly after my nineteenth birthday. Her cost was £457,415 and I believe that she earned ever penny!

Length overall - 362.5 feet.
Beam - 37 feet.
Draught (full load) - 12.5 feet.
Displacement - standard 1,920 tons, 2,451 tons seagoing.
Main armament - 6 x 4.7 inch Mk XI guns firing a 62lb shell.

The main armamment was designed for two roles - ship or shore bombardment and also as anti aircraft guns. Two guns were fitted in each of the three type MK XX mountings which had fully enclosed gun shields and fixed central ammunition hoists. The housing had power training with manual elevation of each gun independently up to 50 degrees. Ammunition carried was 250 rounds per gun. Firing rate was 12 rounds per minute (in ideal circumstances) with 19,400 yards maximum range. 12 rounds per gun were stored on either side of the gun housing for ready use plus a further 2 rounds over the fuse setting machine.

Main armament fire control - power trained HA/LA MkIV TP, combined director and ragefinder with type 285 RDF and gyro director sight (known as the 'P'sight) which also stabalised the layer's and trainer's binoculars.

Torpedo tubes - 4 x 21 inch on a single Mk X mounting with a fully enclosed layer position.

Anti Aircraft armament - single 4 inch gun MkV on a MkIII mounting with no shield, later replaced by a 4 x 21 inch torpedo tube Mk X mounting as above. Quadruple power operated 2 pdr MkVII pom-pom. 2 x 0.5 inch multiple machine guns on the bridge wings later replaced by single power operated 20mm Oerlikons. 2 x 20mm single power operated Oerlikons abreast the main searchlight (possibly later replaced by twin 20mm Oerlikons).

Depth charges - 42 (possibly more) on two over-stern rails and four throwers, giving seven patterns.

Fuel oil - 567 tons.
Endurance - 5,500 miles at 15 knots, 1080 miles at full speed.
Maximum speed - 33.8 knots at 341.4 rpm.
Machinery - 2 geared turbines driving two shafts.
Shaft Horsepower - 48,200 at a mean of 341.4 rpm.
ASDIC for submarine location and echo sounding gear were fitted.

Battle Honours awarded to Lightning - Barfleur (1692), Vigo (1702), Velez Malaga (1704), Louisberg (1758), Baltic (1854-5), Diégo Suarez (1942) and Malta Convoys (1941-2).


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