Quote:
Originally Posted by peabody
I have not yet found any info on the mark 8.
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From
NavWeaps
Bliss-Leavitt 21" (53.3 cm) Mark 8
Ship Class Used On Flush-deck destroyers
Date Of Design About 1914
Date In Service 1915
Weight
Mods 0, 1, 2, 2A and 2B: 2,761 lbs. (1,252 kg)
Mods 3A and 3B: 3,050 lbs. (1,383 kg)
Mod 8: 3,176 lbs. (1,441 kg)
Overall Length
Mods 0, 1, 2, 2A and 2B: 248 in (6.299 m)
Mods 3A and 3B: 250 in (6.350 m)
Mod 8: 256.3 in (6.510 m)
Explosive Charge
Mods 0, 1, 2, 2A and 2B: 321 lbs. (146 kg) TNT
Mods 3A and 3B: 385 lbs. (175 kg) TNT
Mod 8: 466 lbs. (211 kg) TNT
Range / Speed
Mods 0, 1, 2, 2A and 2B: 10,000 or 12,500 yards (9,140 or 11,430 m) / 27 knots
Mods 3A and 3B: 13,500 yards (12,340 m) / 27 knots
Mod 8: 15,000 yards (13,720 m) / 29 knots
Power Wet-heater
Guidance Mark 8 Mod 1 gyro
Notes: First 21" x 21' (53.3 cm x 6.5 m) USN torpedo. Later versions starting in 1923 - Mod 5, 6 and 8 - had much larger warheads. These torpedoes were still being used on older destroyers and PT boats during World War II. It is possible that a higher speed setting was available for the torpedoes issued to PT boats. This torpedo was supplied to Britain for use on Lend-Lease Destroyers in 1940. Torpedoes issued to Britain are listed as having a warhead of 380 lbs. (172 kg) TNT and a range of 14,000 yards (12,800 m) at 27 knots.