Kilroy Danger Signal

Kilroy's Danger Signal wiring
As seen in the Annual Report of the Torpedo School, 1913

Kilroy's Danger Signal was an automated system to detect and signal when the blast from one turret's guns might endanger the guns of another turret based on their present training and elevation angles.

It was one of several contributions of Willie Dickson Kilroy, an inventor and officer in the Royal Navy Volunteer Reserve.

When the system detected an unsafe firing condition, a loud audible alarm from a warning trumpet would sound in the endangering turret, and it was to be taken to mean, "Don't fire!" A visual indication would accompany the sound.

See Also

• Danger Zone Fire Control

Bibliography

• Admiralty, Gunnery Branch (1914). Handbook for Fire Control Instruments, 1914. G. 01627/14. C.B. 1030. Copy 1235 at The National Archives. ADM 186/191.