Gyro Director Training Gear

Gyro Director Training Gear (often G.D.T. or GDT) was a Royal Navy innovation hit upon late in the war which revisited the means by which a ship would take bearings to a target and plot them on a Dreyer Fire Control Table. GDT arrived too late to see action in the war.^{[Citation needed]}

Prior Methods

Before the advent of GDT, a Royal Navy capital ship would take bearings to the target from either an Argo Rangefinder or from a Mark VII Dumaresq situated in the armoured hood, and these would be rectified by a gyro-compass before being plotted against time on

See Also

• Standard Bearing Plot
• Gunnery Director
• Dreyer Fire Control Table

Bibliography

• Template:BibUKDreyerTableHandbook1918
• Template:BibUKPamphletDreyerTableMarkIII*1930
• Admiralty, Gunnery Branch (1930). Pamphlet on the Mark IV* Dreyer Table. O.U. 6196 (C). Copy at Admiralty Library, Portsmouth, United Kingdom.

• Template:BibUKPamphletDreyerTableMarkV1930
• Template:BibUKPamphletDreyerTurretTable1930