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138 THOMPSON'S COAST PILOT. tackles; then bowse the head of the mast forward, so that the tackle from the mast-head will plumb the stump; overhaul the tackle down, and make it fast to the stump; haul it out, put it over the side, clap on to the new mast, hoist it in and step it in - the place of the old one. Take the same tackle, shift it to the fore part of the new mast; clap on to the old one (now a der- ° rick) and send it over the side or on the dock, and it is done. The only precaution necessary is to keep the stay and atiter- guys well taut. The standing rigging needs no slacking until you want to send the old spar over the side. This is a good, safe way of taking in a new mast and getting out an old one, when the lower part of the mast is of no service, or no sheers are at hand. | LEE WAY. The quantity of lee way to be allowed will depend upon a variety of circumstances, as the mould and trim of a vessel, the _ quantity of sail carried, her velocity through the water, etc., hence no general rules can be laid down with accuracy that will determine the quantity of lee way in all cases. The fol- 'lowing have, however, been usually given by most practical navigators for a full-rigged ship. Our lake vessels, with center- boards, make more lee way in heavy weather than standing- keel vessels, of a greater draught of water. Rutss.--When a ship is close hauled, with all her sails set, the water smooth, and a light breeze of wind, she is then sup- posed to make little or no lee way. When top-gallant sails are stowed, allow one point. When under close reefed top-sails, allow two points. When one top-sail is stowed, allow two and a half points. When both top-sails are stowed, allow three and a half points. When the fore-course is stowed, allow four points. When under the main-sail only, allow five points. When under a balance mizzen, allow six points. When under bare poles, allow seven points. As these allowances depend entirely upon the quantity of sail set, without regard to any other circumstances, it is evident that they can be considered only as probable conjectures, and may, indeed, serve to make up a day's work. But since the