Are small Ropes, made fast to the Bottom of the Sails, in the middle Part of the Boltrope to a Cringle, and so are reeved through a small Block, seized to the Yard; their Use is to trice up the Bunt of the Sail, for the better furling of it up. Buoys Cann Are hooped with Iron, and made very strong, in Shape of a Cann; their Use is to lie on Shoals or Sands for Marks. Nunn Are made tapering at each End, and filled with Rhine Hoops and some Iron, which being strapped with Ropes, are fastened to the Buoy-rope, so as to float directly over the Anchor. Wood Are made out of old Masts, _&c._ and hath a large Hole made at one End, through which the Buoy-rope is reeved, and serves for the aforesaid Uses: From hence the Word Buoyant, signifies any Thing that is floatable. Burden or Burthen Of a Ship, is her Content, or the Number of Tuns she will carry, to compute which, (according to the Rule of Shipwrights Hall) is to multiply the Length of the Keel, by her Breadth and half Breadth, and divide by 94, gives the Number of Tuns. Burton Is a small Tackle, to be fastened any where at Pleasure, fitted with two single Blocks, and its Use is to hoist small Things. Ditto Pendants Short Ropes, which at one End is fastened either to the Head of the Mast, End of the Yards, on the Main Stay, or Back of the Rudder; and at the other End hath a Thimble spliced in, or a Block to reeve a Fall through. Butt Is the End of any Plank which joins to another on the Outside of a Ship under Water; and therefore when a Plank is loose at one End, they call it springing a Butt, to prevent which, they are usually bolted at the Ends. Buttock That Part of the Ship's Stern under the Wing Transom, whether round or square. Bow Is the Round of a Ship's Side forward, reckoned from the After-bitts (on the Gundeck) to the Stem; if she hath a broad Bow, they call it a Bold-bow; if a narrow thin Bow, its called a Lean-bow. Cables Allowed a Ship for Channel Service, are distributed in this Manner, two being spliced together are called the Sheat-shot; three, the Best-bower; one the Small-bower, and one Spare; but if they go a Foreign Voyage, then they are allowed another, which is either bent to the Spare or Small-bower, and are all of one Size; and all Ships are likewise allowed a Stream, which being bent to their respective Anchors, holds the Ship fast when she rides. To serve round, or Plat the Cable, is bind about it old Rope, Canvas, _&c._ to keep it from gawling in the Hawse, _&c._ Splice the Cable, is to make two fast together, by working the several Strands one into the other. Coyl the Cable, is to roll it up round in a Ring, of which the several Rolls one upon another are called the Cable Tire. Pay or Veer more Cable, is let more out from the Ship. When two or three Cables are spliced together, it is called a Shot. Callipers Are for taking the Diameter of Timber, Masts, Yards, and Bowsprits, before received into Store. Caulking