Although not commonly in use, the pull-out tests provide an indication of a ship’s stability on a straight course. The ship is first made to turn with some rate of turn in either direction. The rudder is then returned to amidships (neutral position). If the ship is stable, the rate of turn will decay to zero for turns to both port and starboard. If the ship is only moderate unstable, the rate of turn will reduce to some residual rate. The pull-out tests should be performed to both port and starboard to show possible asymmetry. Normally, pull-out tests can easily be performed in connection with other tests being run.