un each half hour. It is useful in
light and variable winds.

TRAVERSE-HORSE. _See_ JACK-STAYS.

TRAVERSE QUESTIONS. Cross examinations at a court-martial.

TRAVERSE SAILING. Resolving a traverse is merely a general term for the
determination of a single course equivalent to a series of successive
courses steered, whatever be the manner of finding the lengths of the
lines forming the triangles.

TRAVERSE-TABLE. A table which gives the difference of latitude and
departure corresponding to a certain course and distance, and _vice
versa_. It is generally calculated to every quarter of a point or
degree, and up to a distance of 300 miles.

TRAVERSE-WIND. A wind which sets right in to any harbour, and prevents
the departure of vessels.

TRAVERSIER. A small fishing vessel on the coast of Rochelle.

TRAVERSUM. A archaic term for a ferry.

TRAWL. A strong net or bag dragged along the bottom of fishing-banks, by
means of a rope, a beam, and a pair of iron trawl-heads.

TRAYERES. An archaic term for a sort of long-boat.

TREADING A SEAM, OR DANCING PEDRO-PEE. _See_ PEDRO-A-PIED.

TREAD OF A SHIP OR KEEL. The length of her keel.

TREAD WATER, TO. The practice in swimming by which the body is sustained
upright, and the head kept above the surface.

TREBLE-BLOCK. One fitted with three sheaves or rollers.

TREBLING. Planking thrice around a whaler's bows in order the more
effectually to withstand the pressure of the ice.

TREBUCHET. An engine of old to cast stones and batter walls.

TRECK-SCHUYT. A canal boat in Holland for carrying goods and passengers.

TREEING. In the Arctic regions, refraction sometimes causes the ice to
resemble a huge wall, which is considered an indication of open water in
that quarter.

TREE-NAILS. Long cylindrical oak or other hard wood pins, driven through
the planks and timbers of a vessel to connect her various parts.

TREE-NAIL WEDGE. A cross is cut in the tree-nail end, and wedges driven
in, caulked; or sometimes a wedge is driven into its inner end, and the
tree-nail is thus secured.

TREES OF A SHIP. The chess-trees, the cross-trees, the rough-trees, the
trestle-trees, and the waste-trees.

TRELAWNEY. A poor mess composed of barley-meal, water, and salt.

TRENCHES. The earthworks by which a besieger approaches a fortified
place; generally half sunk in the ground, the other half formed by the
excavated earth thrown, as a parapet, to the front.

TRENCHMAN. _See_ TRUGMAN.

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