A pulley with one or more sheaves (grooves), over which a rope is roved. It can be used to chage the direction of the rope, or in pairs used to form a tackle.



Related Terms

LIFT

1) A change in wind direction enabling a yacht to point in a direction that was previously too close hauled. 2) A rope or tackle from a boom to the mast to support and move it for cargo working.

END FOR END

To reeve a rope in the opposite direction through a tackle in order to put an unworn section over the pulley.

UNREEVE

To pull a rope from a sheave or block.

PENDANT

  1. A length of wire or rope secured at one end to a mast or spar and having a block or other fitting at the lower end.
  2. A length of wire or rope hooked to a tackle on leeboards.
  3. A long, thin triangular flag flown from the masthead of a military ship (as opposed to a burgee, the flags thus flown on yachts).

SNATCH BLOCK

A single sheave made so that the shell opens on one side of the base allowing a rope to be slipped over the sheave without threading it. Used to change direction of pull.

SHEAVE

Pulley in the block

DUMMY JOINT

A groove cut into the top half of a concrete slab, sometimes packed with filler, to form a line where the slab can crack with only minimum damage.

HORSE

A raised track way on which the traveller carrying the lower block of the mainsheet tackle slides.

OSCILLATORY WAVE

A wave in which only the form advances, the individual particles of the medium moving in closed orbits, as ocean waves in deep water; in contrast with a WAVE OF TRANSLATION, in which the individual particles are shifted in the direction of wave travel, as ocean waves in shoal water.

LANG LAY WIRE ROPE

Wire rope that has its strands and wires wound in the same direction

Related questions

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