orting spar between the cap and the trestle-tree.

CAPSIZE, TO. To upset or overturn anything.

CAP-SQUARE. The clamp of iron which shuts over the trunnions of a gun to
secure them to the carriage, having a curve to receive one-third part of
the trunnion, the other two being sunk in the carriage; it is closed by
forelocks.

CAPSTAN, CABESTAN, CAPSTERN, CAPSTON, &c. A mechanical arrangement for
lifting great weights. There is a variety of capsterns, but they agree
in having a horizontal circular head, which has square holes around its
edge, and in these long bars are shipped, and are said to be "swifted"
when their outer ends are traced together; beneath is a perpendicular
barrel, round which is wrapped the rope or chain used to lift the anchor
or other great weight, even to the heaving a ship off a shoal. Now, in
most ships where a capstern is used to lift the anchor, the chain cable
is itself brought to the capstern. The purchase or lifting power is
gained by the great sweep of the bars. A perpendicular iron spindle
passes through the whole capstern, and is stepped into a socket on the
deck below the one on which it stands. In some cases capsterns are
double in height, so that bars may be worked on two decks, giving more
room for the men.

CAPSTAN, TO COME UP THE. In one sense is to lift the pauls and walk
back, or turn the capstan the contrary way, thereby slackening, or
letting out some of the rope on which they have been heaving. The sudden
order would be obeyed by surging, or letting go any rope on which they
were heaving. Synonymous to "Come up the purchase."

CAPSTAN, TO HEAVE AT THE. To urge it round, by pushing against the bars,
as already described.

CAPSTAN, TO MAN THE. To place the sailors at it in readiness to heave.

CAPSTAN, TO PAUL THE. To drop all the pauls into their sockets, to
prevent the capstan from recoiling during any pause of heaving.

CAPSTAN, TO RIG THE. To fix the bars in their respective holes, thrust
in the pins to confine them, and reeve the swifter through the ends.

CAPSTAN, SURGE THE. Is the order to slacken the rope which is wound
round the barrel while heaving, to prevent it from riding or fouling.
This term specially applies to surging the messenger when it rides, or
when the two lashing eyes foul on the whelps or the barrel.

CAPSTAN-BAR PINS. Pins inserted through their ends to prevent their
unshipping.

CAPSTAN-BARRING. An obsolete sea-punishment, in which the offender