Marine conversions
1 Nautical mile (1 knot) = 1.15 Statutory Mile = 6080 feet =1 minute of arc on the earth's surface
1 Fathom = 6 feet
10 cables = 1 Nautical mile
1 point on the compass = 11.25 degrees
1 metre = 3.2808 feet= 39.3 inches
1 Statutory mile = 1.6093 kilometres

Engine types
Outboard - a detachable motor fixed to the transom
Inboard/Outboard, Stern drive, I/O - engine to the rear of the vessel, but enclosed inside the vessel with the drive portion outside of the transom
Inboard - Engine enclosed inside the vessel, mostly located in the centre of the vessel but sometimes located near the rear of the vessel (if a V-drive type). Drive (propellor) shaft extends rearward out of the bottom of the vessel through the stuffing box and attaches to the propellor