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JLBC PHASE 3 - Rope JLBC (Rescue)


JLBC PHASE 3 - Rope JLBC (Rescue)

Strops. Strops are continuous loops in a line or wire rope. They are used to pass around a cask, spar, piece of line, etc., to provide an eye to be placed over a hook or shackle.

We are leading Block (for the Fall of the Main Purchase). The leading Block is secured to one of the spars, and the hauling part, or fall of the prior purchase, is led through it. This Block is used to change the direction of pull on the fall of the immediate purchase.

Splay Tackle. The splay tackle, consisting of a luff, prevents the spars from splaying – moving further apart – when they are under load.

Heel Tackles. The heel tackles, consisting of luffs, provide firm tension on the spars' heels and give lateral and fore-and-aft support.

Tag Line. A line attached to the running block of the primary purchase is used to retrieve the main purchase without stepping into the forward danger zone.

Martingale (if Fitted). If a suitable attachment point exists at the front of the sheers, a martingale may be led down from the head. This will prevent the sheers from springing up or back when hoisting and lowering a load.

Shoes (if Fitted). Shoes are usually square slabs of hardwood with a recess in their upper surface to take the heel of a spar. The length of each side should not be less than four times the diameter of the spar. JLBC Cadets They are used to distributing the weight of the load and the thrust of the spars over an area of the deck. When ashore, they are used to distribute the weight to prevent the spars from sinking into the ground.

TIMBER HITCH

Use of a Timber Hitch

The timber hitch is used to tow, hoist or lower a spar. The more tension placed on the trap, the more it will hold the spar. When the pressure is released, the hitch will loosen. To add directional stability or when tying the hitch to a tapered spar, an extra half hitch should be added beside the timber hitch on the side facing the direction of pull.

How to Tie a Timber Hitch

1. Pass the working end of a line around the spar and bring it to the front.

2. Take the end around the standing part and make a small loop.

3. Tuck the working end between the standing end and itself.

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