Torpedo Director Pattern 1193: Difference between revisions
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==Alterations and Service== | ==Alterations and Service== | ||
It entered service sometime before 1903 and was no longer used in any modern ships as of 1912.<ref>''Torpedo Drill Book, 1912'', p. 494.</ref> | It entered service sometime before 1903. In 1911, it was described as for use by torpedo craft with cold torpedoes and when mounted right on the tube.<ref>''Addenda (1911) to Torpedo Manual, Vol. III., 1909'', p. 170.</ref> | ||
It was no longer used in any modern ships as of 1912.<ref>''Torpedo Drill Book, 1912'', p. 494.</ref> | |||
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.<ref>''Torpedo Drill Book, 1903'', Plate 5.</ref> | 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.<ref>''Torpedo Drill Book, 1903'', Plate 5.</ref> | ||
Revision as of 19:02, 13 April 2011
The Torpedo Director Pattern 1193, sometimes called the "Right Ahead" director,[2] was a British torpedo director used in early torpedo craft. It was used for torpedoes fired from fixed tubes and from dropping gear.[3]
Presumably, it was a contemporary instrument to the Pattern 1192 whose semi-circular design was amenable for use with trainable torpedo tubes.[Inference]
Design
It featured a 60 degree arc and was originally graduated to permit enemy speeds of zero to 30 knots and torpedo speeds of 12 to 40 knots.
If a Pattern 1193a existed, it was similar, but made stronger in its pivots and sighting bar.[4]
Alterations and Service
It entered service sometime before 1903. In 1911, it was described as for use by torpedo craft with cold torpedoes and when mounted right on the tube.[5]
It was no longer used in any modern ships as of 1912.[6]
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 TBD fore bridges and heater torpedoes.[8]
See Also
Footnotes
- ↑ The Annual Report of the Torpedo School, 1903, Plate 5. Small chance this is 2390. It cannot be an 1895, as they never had graduated sight bars.
- ↑ Handbook of Torpedo Control, 1916, p. 16.
- ↑ Torpedo Drill Book, 1905, p. 376.
- ↑ Torpedo Drill Book, 1914, p. 564.
- ↑ Addenda (1911) to Torpedo Manual, Vol. III., 1909, p. 170.
- ↑ Torpedo Drill Book, 1912, p. 494.
- ↑ Torpedo Drill Book, 1903, Plate 5.
- ↑ The Annual Report of the Torpedo School, 1909, p. 22.
Bibliography
