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Weapons

3 inch/50 Mk22

Three mounts
These weapons were used for both anti-air and anti-ship roles. they were manually operated and fired fixed case ammunitions available in AA, HA, HET, APT and illuminating rounds. They were mounted two forward and one aft.

 

1.1 inch/75 Mk 2 Quad

One mount
Known as the "Chicago Piano" this "long range" anti-air weapon was developed in the early 1930's and had a tendency to jam under heavy use.  

20MM Mk 4 - Oerlikon

10 mounts (originally 8)
These mounts we shielded, manually controlled and fitted to a conical pedestal which  allowed for vertical adjustment during firing. It required a three man crew: gunner, loader and elevator.  Each mount was fitted with a Mk14 computing gun sight.

Mk 15 Torpedo

Three carried in a triple tube mount on the 01 level aft.
The three tubes were fitted to a base that allowed for rotation so the mount could be aimed starboard or port. The torpedoes were loaded prior to operations. The Mk 15 was 21 inches in diameter, turbine driven (air-alcohol-water superheated), gyro guided, weighed two tons and carried a war head of 825 HBX. Range was 15,000 yards at 26.5 knots, 10,000 yards at 33.5 knots.

7.2 inch Projector Mk 10 - Hedgehog

1 Mount with 144 rounds (250 rounds on May 28, 1944 from USS Spangler)
Standard ahead throwing anti-submarine weapon. Small missiles launched in pairs about 1/10th second apart. The average range was about 200 yards and the charges fell in an elliptical pattern about 140 feet X 120 feet.

MK9 Mod 0 Depth Charge Release Tracks

Two on the fantail port and starboard
These could carry Mk6, Mk8, MK9 and Mk14 charges. England likely carries Mk6 depth charges that had only a 200 pound charge of TNT but have a high sink rate of 14 feet per second.

Mk 6 Depth Charge Projectors - K-guns

Eight - aft, four on each side
This weapon would launch the Mk 6 depth charge 50, 75 0r 120 yards. It could also launch the Mk 9 depth charge a range of 60, 90 or 150 yards. The ready service racks allowed for storage of four 300 pound or 600 pound depth charges.

Smoke Generators

Mounted on the fantail and used to make clouds of smoke to make it harder for enemy guns to target the ship.

Fire Control

2.5 Meter range finder

One - Mounted on the open bridge
Standard optical site for anti-ship use. It controlled the main battery 3 inch/50 Mk22.

Mk 51 Gun Directors

Two
Computing gun site with rate gyros to calculate through dead reckoning the target's next position. 

Radar

SL Surface Search

This radar used a 42 inch parabolic antenna operating in the S-band at 150kW with a range of 13 miles.

SA Air search with IFF (Identification Friend or Foe) - Bedspring

This radar used an 8 foot 9 inch X 5 foot antenna operating in the P-band (1.36 meters) with a range of 8 miles. Made by RCA.

Sonar

QCS

Search light type sonar, sending out a 'ping' in a 14 degree wide beam. It could report only range and bearing.

Electronic Counter Measures

TDY Radar Jamming Antenna

Mounted above the bridge these early forms of Electronic Counter Measures (ECM) were used to jam Japanese search radar.

 

Communication

Ship to Ship

Signal flags, signal lights, fighting lights on the mast and Talk Between Ships (TBS) voice radio. TBS was short range VHF. Its short range made allowed un coded communications since it was unlikely the enemy would be within range to receive it.

On board

 

Circuit  Description
J Series Primary battle circuits lettered JA through JZ. JA was the Commanding Officer's circuit connecting the bridge with the Combat Information Center (CIC), after control, Damage control Central and other major battle stations.
1JV Navigation circuit connecting the Commanding Officer with the engineering spaces, after steering, mooring stations, the forecastle and fantail.
Secondary X (example X1JV) Backup for primary circuits.

 

Information here is based on the book Anatomy of the Ship, The Destroyer Escort England by All Ross.