PREVENTER-STOPPERS. Short pieces of rope, knotted at each end, for securing the clues of sails or rigging during action, or when strained.

PREVENTIVE SERVICE. The establishment of coast-guards at numerous stations along the shores of the United Kingdom for the prevention of smuggling.

PRICKER. A small marline-spike for making and stretching the holes for points and rope-bands in sails. Also, the priming-wire of a gun. Also, a northern name for the basking-shark.

PRICKING A SAIL. The running a middle seam between the two seams which unite every cloth of a sail to the next adjoining. This is rarely done till the sails have been worn some time, or in the case of heavy canvas, storm-sails, &c. It is also called middle-stitching.

PRICKING FOR A SOFT PLANK. Selecting a place on the deck for sleeping upon.

PRICKING HER OFF. Marking a ship's position upon a chart by the help of a scale and compasses, so as to show her situation as to latitude, longitude, and bearings of the place bound to.

PRIDE OF THE MORNING. A misty dew at sunrise; a light shower; the end of the land breeze followed by a dead calm in the tropics.

PRIEST'S-CAP. An outwork which has three salient angles at the head and two inwards.

PRIMAGE. Premium of insurance. Also, a small allowance at the water side to master and mariner for each pack or bale of cargo landed by them: otherwise called hat-money.

PRIMARY PLANET. (See [Planets, Primary].)