Nautical Slide Ruler (Weems & Plath 105) Imray - North Atlantic Ocean British Admiralty Nautical Chart 3658:

British Admiralty Nautical Chart 3658: Chiu-Kang Po-Ti to Kuei-Shan Tao is a standard nautical chart

1 PIPES AND VALVES

Red represents courage and strength

4 Fixed Water Spray Systems

Sarigan Island

Nautical Slide Ruler (Weems & Plath 105) Imray - North Atlantic Ocean British Admiralty Nautical Chart 3658:The Nautical Slide Rule offers a foolproof, immediate solution to all common speed time distance problems and is convertible to statute or nautical miles. It also allows the user to compute distance in yards if the speed is factored in knots. The Nautical Slide Rule is sometimes referred to as a Time Speed Distance Calculator. Immediate solution to all speed time distance problems Equally applicable for nautical or statute miles Speed in knots or mph;