DICTIONARY OF

Bateau 35 Bay Ice
Bateau.* Name formerly given to a lightly-constructed boat that was relatively narrow for
its length. Usually broad at middle length but narrowed quickly towards ends.
Bathometer. Instrument for measuring oceanic depths.
Bathyal Zone. Between 100 and 500 fathoms below sea surface. Bed is usually mud;
perhaps containing organic oozes.
Bathybic. Existing in the depths of the sea.
Bathymetric. Pertaining to oceanic soundings.
Bathymetry. Measurement of deep sea soundings.
Bathysphere. Spherical diving chamber capable of withstanding oceanic pressures at great
depths.
Batil. Two-masted sailing craft of China Seas. About 50 feet long and fitted with outrigger.
Batten. Long, narrow, thin strip of wood or metal used for different purposes, particularly
for securing hatch tarpaulins. 2. Length of sawn timber from 2 to 4 inches thick and from 5
to 7 inches wide.
Batten Down. To securely cover a hatch with one or more tarpaulins that are secured by
hatch battens and wedges.
Battened Sails. Sails stiffened with horizontal battens. The battens help to keep a taut sail
when on a wind, and sail may be quickly struck in a squall. Though fairly common in the
East they are not often seen in home waters.
Batten Observations. Method of determining amount of roll of a ship by having a sighting
hole in centre line of ship, and a vertical graduated batten in same transverse line but near
ship's side. Amount of roll is determined by noting where sea horizon cuts graduated batten.
Battery. A group of guns. All guns on one side of ship. 2. In electricity is two or more cells
connected together, either in parallel or in series.
Battledore. Flat metal fitting put athwartships through cable bitts, and projecting on either
side, to keep turns of cable from riding.
Battleship. Heavily armed and armoured warship in which a certain amount of speed is
yielded to obtain maximum hitting power and protection. Displacement may approximate
50,000 tons.
Bauer Wach Turbine. Auxiliary turbine geared to propeller shaft and driven by exhaust
steam from triple expansion main engines.
Baulk. Beam. Beam-shaped piece of timber.
Baulk Yawl. Bale yawl.
Bawley. Sailing boat used in lower reaches of Thames for shrimping or whitebait and sprat
fishing. Usually cutter rigged with loose-footed mainsail.
Bawse.* Old name for a ship's boat. See 'Buss'. Bay. Arm of sea extending into land and
with a seaward width that is greater than amount it goes into the land. 2. Compartment, in
hold or store, with entrance not less, in width, than depth of the compartment.
Bay Ice. Alternative name for 'Young Ice'.