Signal book for the Ships of War. 1783. Issued to H.M.S. CORMORAN from the Flagship H.M.S. AJAX at Port Royal, Jamaica, on 13 April 1783 by Command of the Admiral (Rear Admiral John Millar). A Squadron Signal Book giving signals and instructions including and additional to those in the General Printed Signal Book. Contents: Compass signals; Horary signals; Signals with sails and guns; Sailing signals by day made from the Admiral; Signals when under sail made by private ships; Fog signals when under sail; Signals at day when at anchor; Fog and night signals when at anchor; A scheme for night signals. [Number 4]