18-in Mark II Torpedo (UK)
The 18-in R.G.F. Mark II Torpedo was a British torpedo torpedo developed at the Royal Gun Factory in 1893.[1]
It may have been built in both long and short versions, but the short version is not clear.
It was very similar to the Mark I version, but had a strengthened head joint and could be set for 5 to 22 foot running depth.[2]
Mark I
It carried a charge of 188 pounds.[3]
In 1895, 126 were yet in service.
Mark IIa
First mentioned in ARTS 1894.[4]
Mark II*
First mentioned in ARTS 1894.[5]
Manufacture and Use
1905
In 60 degree water, 18-in H.B. torpedoes of Mark I* through IV were approved for the setting of 1,500 yards at 20.25 +/- 0.25 knots at 1,400 pounds pressure. The S.L.L.R. torpedoes of the same Marks did at 21.75 knots to 1,500 yards and the S.L.S.R. models 25.25 knots at 1,350 pounds pressure.[6]
1918
12 of just 33 remaining Mark II and II* torpedoes were broken up in 1918.[7]
1919
In 1919, it was approved to break up all 18-in R.G.F. torpedoes Mark I* to Mark III.[8]
Footnotes
- ↑ Annual Report of the Torpedo School, 1893. p. 52.
- ↑ Annual Report of the Torpedo School, 1893. p. 52.
- ↑ Annual Report of the Torpedo School, 1895. p. 30.
- ↑ Annual Report of the Torpedo School, 1894. p. 40.
- ↑ Annual Report of the Torpedo School, 1894. p. 40.
- ↑ Principal Questions Dealt with by the Director of Naval Ordnance, 1905. pp. 440, 441.
- ↑ Annual Report of the Torpedo School, 1918. p. 10. (G. 8472/18).
- ↑ Annual Report of the Torpedo School, 1919. p. 11.
Bibliography
