Folio. [2], 25pp, [3]. Later navy wrappers. Extremities rubbed and marked. Internally clean and crisp.

A rare survival, in the original royal blue paper wrappers, of the additional sailing and fighting instructions issued by the Royal Navy during the later years of the American War of Independence. Whilst undated, a copy of this edition - now at the Society of the Cincinnati - marked up for use by ships under the command of Vice Admiral Duff (who helped to defence Gibraltar in 1779, and held no further command after 1780 d. 1787) - provides a hard ceiling for the publication date.

Under two headings, the text provides 66 additional sailing instructions (themselves separated into instructions for day, night, and during a fog), and 30 fighting instructions for both day and night; the whole is also followed by an index of the signals mentioned herein, printed in black (sailing) and red (fighting).

ESTC records copies of this edition (one of several variants) at just two locations in the British Isles (BL an NA), and two further in North America (Brown and Society of the Cincinnati).