Page 536 - The Ashley Book of Knots

PRACTICAL MARLING SPIKE SEAl\lAKSHIP

3224. Jffhip upon whip.

3225. A double 'u,'hip.

3226. A sail tackle is used when bending sails. A fair-lead block is

~eized to the lower block. Fair-leads are used with many tackles; 3224

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often they are snatch blocks (~J201), which are instantly remov-

able. They are secured wherever convenient, provided thev admit

of a proper exertion of power. •

3227. Quarter tackle or yard tackle. This is attached to a .yard

when needed to break out supplies. There is a long pendant to the

lower block.

3228. Topgallam balyard purchase.

3229. Watch tackle, handy-billy or tail tackle is a smallluft tackle

with a tail on the fall block. This is always kept handy for any emer-

gency and may be bent to either rigging or yard. The tail is tapered

and platted or else made selvagee-fashion.

3230. Jiggers or jig tackles with double tails are used for the same

322.6 3221

purpose and are also called handy-billies. They are handy tackles

kept for odd jobs alow and aloft.

3231. A top burton is mechanically the same as the luff tackle.

The fiddle block allows the tackle to lie flat close to a spar.

3232. A long t«ckle. This also lies close to a spar and is for the

same purpose as the former, but has more power.

3233. The Spanisb burton, single burton, or dory tackle is the

tackle with which Gloucestermen handle their dories. The upper

block may be fitted with either an eye, a hook or a tail. The tackle

is very economical of power but it is practical only for short lifts.

In running rigging the fall block is generally fitted with a thimble

and eye or a shackle. Tackles for occasional use are more apt to have

hooks. 3228 32Z~

Due to friction, the greatest strain is on the hauling part of the

rope in hoisting, but in lowering, it is on the standing part.

A tackle with eyes on both blocks is called an eye tackle. A tackle

with hooks on both blocks is called a hook tackle.

The power of a tackle may be computed by counting the number

of parts in the rope between the two blocks. If the pull is away from

the fall or lead block, the fall also is added to the total of parts. If 3330

two tackles are compounded by hooking one to the fall of the other,

each tackle is counted separately and the two sums are multiplied

together. If there is any doubt (as there may well be when tackles

such as the burtons are elaborately compounded) it is an eas matter

to decide empirically. Layout the tackle on the deck or oor and 3231

secure the upper block. Overhaul (lengthen) the tackle several feet.

Put a stop for a marker on the fall where it leads from the block,

then measure the distance the marker moves in hauling the lower

block one foot. This will be the figure wanted. If it is six feet, the

power is one to six. At sea an allowance is made for loss of power of

from five to eight per cent for each shiv in the tackle.

32.~2 323S

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