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 TM 55-1905-242-14
GLOSSARY (continued)
Life raft
Raft kept buoyant by cylindrical air chambers, designed to keep survivors
of a disaster afloat for rescue.
Life ring
Floating ring covered with canvas that is designed to support a person in
water.
Main deck
First complete deck running the full length of a vessel.
Maneuver
To make a series of changes in direction and position for a specific pur-
pose.
Moored
Lying with both anchors down; tied to a pier or anchor buoy; also to se-
cure a vessel other than by anchoring with a single anchor.
Mooring lines
Cables or ropes used to tie up a vessel.
Outboard
Toward the side of a vessel in relation to the centerline or outside the
vessel entirely; also, the side away from a wharf or vessel alongside.
PFD
Personal Flotation Device: An apparatus of buoyant material, designed to
keep a person afloat.
Pier
A wharf that projects into a harbor, with water and accommodations for
berthing vessels on two or more sides of it.
Port side
The left side of a vessel looking forward, indicated by a red running light
when underway at night; an opening in a vessel's side; a harbor for cargo
operations.
Potable water
Drinkable water, meeting standards set by the U.S. Public Health Service.
Quarter
General area from the middle of a vessel to the extreme stern; also to
proceed with the quarter to the wind or sea; to bring the sea or wind first
on one quarter and then on the other.
Right-hand propeller
When viewed from astern, the propeller that turns clockwise while driv-
ing the boat ahead.
Rudder
Flat structure hung vertically on the sternpost, just aft of the screw, and
used to steer a vessel by offering resistance to the water when turned to an
angle with the centerline.
Rudder amidships
The position of the rudder when it parallels the keel line of the vessel.
Running lights
All lights required to be shown during peacetime by a vessel that is under
way.
Scope
Length of anchor chain or cable to which a vessel is riding.
Seacock
Valve connecting with the outside sea water in the lower part of vessel
that can be used to flood various parts.
Sheave
A grooved wheel or pulley inside a block over which a line runs.
Spring line
A mooring line leading at an angle of about 45 degrees from the fore and
aft line of a vessel to a wharf or another vessel.
GLOSSARY-3
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