Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing . to stern, and where it fitsaround the trunk it is cut out. Both the inner and outerkeels are six inches wide and the exposed edges are bevelledwith a plane. A sectional or end view of the trunk and itslocation in the keels is shown in Fig. 20, where the shadingand lettering will designate each part. The centre-board is four feet and nine inches long, thirtyinches wide at the back, and twenty-four inches at the is attached to the trunk with a hard-wood pin locatednear the forward lower end, and whe
Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing . to stern, and where it fitsaround the trunk it is cut out. Both the inner and outerkeels are six inches wide and the exposed edges are bevelledwith a plane. A sectional or end view of the trunk and itslocation in the keels is shown in Fig. 20, where the shadingand lettering will designate each part. The centre-board is four feet and nine inches long, thirtyinches wide at the back, and twenty-four inches at the is attached to the trunk with a hard-wood pin locatednear the forward lower end, and when it is drawn up it willappear as shown in Fig. 21 A, but when lowered it will looklike Fig. 21 B. The centre-board is made of hard-wood, several boards ofwhich are pinned together with galvanized-iron rods three-eighths of an inch in diameter and driven through from edgeto edge of the boards in snug holes made with a long bit orauger. The rods are riveted at both ends over washers toprevent the boards from working apart. It would be better to let a boat-builder or carpenter make 80. lOUTER KEELA CENTRE-BOARD SHARPY BOATING BOOK FOR BOYS this board the proper size and shape to fit the trunk, for it isthe most difficult thing to construct about a boat and some-what beyond the ability of many boys. A large galvanizedeye and a rope made fast below the middle of the board atthe rear edge will provide the means for raising and lower-ing the centre-board. The deck ribs and the planking are put in the same asdescribed for the sailing sharpy. A Proa In the South Sea Islands the natives dig out the trunk ofa tree, rig a lateen sail on a single stick, and arrange a coun-ter-balance on the end of two poles in the form of a catama-ran. With this rude contrivance they can outsail anythingin the shape of a small boat such as our types of cat-boatsand sharpies. These queer craft are called proas, and a modifiedtype that a boy can make is shown in the illustrationFig. 22. This is a perfectly s
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Keywords: ., bookcentury1900, bookdecade1910, bookidharpersboati, bookyear1912
