The manoeuvre of a ship when it wants to turn in narrow waters where there is insufficient room for it to turn normally while going ahead. If it goes astern with reversed helm, its bows will continue to swing in the required direction of its original turn. It is the equivalent of backing and filling until the vessel is heading on its new course. It was also a manoeuvre, though usually involuntary, in sailing ships when they were taken aback while tacking. But see also club haul, to.