Submarine signalling.
Submarine Signal Company (London, England)
London : Submarine Signal Co., Friars House, New Broad Street,
[1916].
"December 1912 (revised August, 1916)"--at head of title page.
Ch. 1. Why submarine signals are necessary -- Ch. 2. Evolution of practical submarine signalling -- Ch. 3. Development of the sending apparatus -- Light-vessel submarine bell -- Electric submarine bell -- Automatic submarine bell for buoys -- Handbells for use from pierheads -- Ch. 4. Apparatus for receiving submarine signals -- Ch. 5. Submarine bells for inter-ship signalling -- Ch. 6. List of ships equipped with receiving apparatus -- Ch. 7. List of submarine signal stations with charts.
Signals and signaling, Submarine.
England London.