Sivut kuvina
PDF
ePub
[graphic][merged small][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][ocr errors][subsumed][subsumed][subsumed][subsumed][subsumed][subsumed][ocr errors][subsumed][ocr errors]

Diagonal m is struck 44in. above the L.W.L., and at m 1 and m 2 is 3ft. out from the middle vertical line o.

Diagonal is struck 14in. below the L.W.L., and at x 1 and x 2 is 1ft. 6in. out from the middle vertical line o.

The base line a a is 9in. below the L.W.L., and parallel thereto.

LAYING-OFF TABLE FOR 21FT. "UNA" BOAT, IN. SCALE.

[blocks in formation]

No. 1 section is 1ft. 10in. from the fore side of the stem; all the other sections are 2ft. 8in. apart, but No. 8 (transom) is 3ft. 2in. from No. 7 station.

Diagonal k is struck 1ft. 2 in. above the L.W.L., and at k 1 and k 2 cuts the side perpendiculars p p 2 inches below the L.W.L.

Diagonal m is struck 6in. above the L.W.L., and at m 1 and m 2 is 4ft. out from the middle vertical line o.

Diagonal x is struck 24in. below the L.W.L., and at a 1 and ≈ 2 is 2ft. out from the middle vertical line o.

The base line a a is 1ft. below the L.W.L., and parallel thereto.

CHAPTER XX.

NEW BRIGHTON SAILING BOATS.

THE New Brighton Sailing boats differ somewhat from those of a few years ago, the principal change being the introduction of a counter. The counter, it may here be said, is a great assistance to small boats, as it enables them to have longer and better buttock lines, and hence a better or cleaner delivery, no eddies being formed astern. Further, with the counter they have more power with a beam or head wind, and run before a sea drier, and much additional room is obtained on board for working the aft sails. The counters are limited in length to 4ft. 6in., and must be clear of the water at the sternpost when ballasted and in trim for sailing, but without crew on board.

[ocr errors]

The boats are not allowed to be decked, and no appliances are permitted to keep out water; they have, however, a kind of "fore peak forward, by fitting a platform level with and forward of the fore thwart, and the counter may be decked as far as the sternpost. To get rid of the water that may be shipped, a 3in. pump is fitted amidships, with a discharge both sides.

The freeboard is cut down as much as possible, as it tells in the "girth" for measurement; in the design of the Elaine (Plate XIII.) an attempt was made to compensate somewhat for this deficiency by wash strakes aft.

The Elaine was designed in 1877 for Mr. John Bouch (Com. N.B.S.C.) by Mr. C. P. Clayton, of Park-road, Birkenhead, and to him we are indebted for particulars of the new Brighton Boats. The Elaine has less

* The measurement rule of the New Brighton Sailing Club is as follows: "Take the extreme length from fore part of stem to after part of sternpost; girth at greatest circumference, by passing a line from gunwale under the boat's bottom, and back to the same point on the same gunwale. The total size of the boat is obtained by multiplying the girth by 1ft. 7in. (1.58ft.), and adding the product to the extreme length. The boats to be raced in one class, and the maximum size of the racing boats to be 50ft. club measurement." Applying this rule to Elaine, we have greatest girth 16ft. 10in., and length 23ft. 3in., thus summed : 16.83 x 1.58 + 23.25 == 49.84ft.

displacement than these boats are usually given, and she has been most successfully sailed against all the crack boats of the club.

The length of the Elaine from fore side of stem to aft side of sternpost. is 23ft. 3in., and her greatest beam 6ft. 4in.; her greatest draft aft with crew (six hands) on board is 3ft. She has 6cwt. of iron on her keel, and 2cwt. of iron inside.

Some of the New Brighton boats are, however, of much heavier displacement. Thus, the Tyro (a very successful boat, designed and sailed by her owner, Mr. G. H. Wilmer), has 24cwt. of iron ballast, 6cwt. of which is on the keel. The weight of the boat is about 14cwt., and of her gear about 6cwt. Her displacement with crew on board is 27 tons (54 cwt.). Other boats have 14cwt. or 15cwt. of lead ballast, 8cwt. or 9cwt. of which are placed on the keel. All these boats have deeper and fuller bodies than Elaine, and a trifle less beam.

The displacement of Elaine to the load water-line shown in the drawing (supposed to be with six hands on board) is 2 tons. The light displacement which brings the counter out of water, as at a (see Sheer Plan), is 2in. less or equal to half a ton less. The displacement per inch of immersion at the load water-line is 25(4) ton.

Six men of about 12 stone each would weigh half a ton, but probably such a heavy crew would not often be found. This number is not found too many for working the sails; and, as a light-displacement boat like Elaine depends so largely on her crew for ballast and stability, it is a serious matter to be one hand short. Probably, as in the case of the centre-board

[ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

gigs before referred to, five or six hands sitting to windward are much more potent as a means of acquiring stability than any practicable quantity of lead or iron in the bottom of the boot or on the keel would be. In light

« EdellinenJatka »