2022-07-19 00:00:00 Marine ship's slip A simple program which assist you to calculate the slip of the ship. The user Insert the pitch of propeller in meters the M/E revolution on watch (as per example for 24 hours) the ship miles (distance of the ship). The output is the distance of Main engine (engine miles) and the Slip of the vessel. Ship slip is the difference between the speed of the Engine and the actual observed speed of the ship.