33.Engine distance

Engine distance

• The actual distance (nautical mile) covered by the ship from noon to noon is measured using ship’s log.

• The total revolutions of the propeller from noon to noon is obtained using revolution counter. The engine distance can be calculated using the pitch of the propeller provided by the manufacturer. Care must be taken in the unit conversion of the pitch from meter to nautical mile (in general 1 NM = 1852 m).

Engine distance in nautical mile = (Pitch x revolutions per day)

Pitch is defined as "the distance a propeller would move in one revolution if it were moving through a soft solid, like a screw through wood