Torpedo Director Pattern 1192
The Torpedo Director Pattern 1192, sometimes referred to as a "broadside director",[2] was a large, semi-circular British torpedo director designed for use with training broadside tubes. It entered service some time before 1893, perhaps 1892.[3]
It was a contemporary instrument to the Pattern 1193,[Inference] which had a 60 degree arc and was used for fixed tubes and dropping gear.
Design
Its design featured an arm that could be deflected from abeam to match the angle of the tube plus any deflection angle the torpedo would take upon entering the water, which was vital as it predated the use of gyroscopes. The scaling was increased to 40 knots torpedo speed and 30 knots enemy ship speed in 1893 from lower values not yet discovered.[4] By 1905, it was likely scaled for torpedo speeds of 12 to 40 knots and enemy speeds of 0 to 30 knots.[5]
If a Pattern 1192a existed, it would have been similar, but made stronger in its pivots and sighting bar.[6]
Alterations and Service
In 1903, it is likely that the sight bar was etched with a scale to permit maximum range for firing to be calculated by arithmetic.[7]
In 1909, some were fitted with tangent bars and regraduated to 2/3rd scale for use from T.B.D. fore bridges and heater torpedoes.[8]
It was no longer used in any modern ships as of 1912.[9]
As of 1916, it was noted as still being in use in the H.M.S. Pelorus class.[10]
See Also
Footnotes
- ↑ Annual Report of the Torpedo School, 1893. Plate 20. I am inferring that this is an 1192.
- ↑ Handbook of Torpedo Control, 1916. p. 16.
- ↑ Annual Report of the Torpedo School, 1905. Plate 5. I am inferring that the 1193 depicted there in modified form indicates the 1192 was well in service.
- ↑ Annual Report of the Torpedo School, 1893. p. 66, Plate 20.
- ↑ Torpedo Drill Book, 1905. Plate 5. Inferring common characteristics with 1193.
- ↑ Torpedo Drill Book, 1914. p. 564.
- ↑ Torpedo Drill Book, 1905. Plate 5. I am inferring that the 1193 depicted indicates the 1192 was also so modified.
- ↑ Annual Report of the Torpedo School, 1909. p. 22.
- ↑ Torpedo Drill Book, 1912. p. 494.
- ↑ Handbook of Torpedo Control, 1916. p. 16.
Bibliography
