Submarine plotting sheet

Submarine plotting sheet.
Includes Satnav, Loran-C and Omega plots. Also astronomical plots.
S.1616A. Revised October 1968.
Circular chart 0-360 degrees & reciprocal & 2 linear scales northing & easting, each calibrated 10-0-10 through centre of circle.
Other charts: 1) "Time/bearing 2) Time/speed in knots3) Range in yards/time in minutes
4) SAMO 5) Masthead height/Plot speed in minutes.

Object Details

ID: ACO1410
Type: Submarine plotting sheet
Display location: Not on display
Creator: Unknown
Date made: 1968
Credit: National Maritime Museum, Greenwich, London, Admiralty Compass Observatory
Measurements: Overall: 6 mm x 1140 mm x 815 mm