- Area on either side of a ship near the mid section.
- Direction of travel opposite to that being traveled.
"Come About" is to change course 180°.
- A modern type of light presently used in many lighthouses to
produce a characteristic. Also used in many airport beacons.
- Toward the stern or back area of a vessel.
- In front of or forward of
to Navigation - Markers, buoys, lights, fog signals, and
electronic systems such as G.P.S. & loran. Used to assist
mariners in fixing their positions, aid in marking landfalls,
mark dangerous shoals and rocks and to enable ships to keep
within a channel.
- Center or middle of a vessel in either length or width.
- Width of a vessel at it's widest point.
- Pedestal that houses a compass and sometimes a light near the
helm (steering wheel) of a ship.
- Front of a vessel.
- Area of a ship from which the vessel is steered and navigated.
Sometimes referred to as the Pilothouse
- Wall or partition dividing a ship into compartments. Also part
of the skeleton (ribs) of a ships structure.
- Part of the hull of a ship that extends above the main deck
from bow to stern forming a rail.
- Compartment used for storing fuel.
- A boom or crane type device used to raise and lower objects.
Commonly used for lifeboats.
- Unique color and/or pattern that identifies an aid to
navigation or vessel during daylight hours.
- Floor or horizontal surface extending from one side of a ship
- The depth a vessel extends below the waterline.
- A tide falling or moving from high to low water.
- The crew's
quarters at the bow of a merchant ship or on a sailing vessel,
the upper deck located forward of the foremast.
- The forward most mast of a sailing vessel.
- The area below the forecastle, near the bow.
- Toward the front or bow of a ship.
- Distance from the waterline to the top of the main deck.
- Global Positioning System that operates off of at least (3) satellites
to triangulate location and elevation.
Gunwale - The
top of the Bulwark or side rail.
A cover used to close and seal a hatchway or opening.
- An opening in the deck through which cargo is transferred or
persons enter and exit.
- An area below decks used for storage of cargo.
- The frame or body of a ship below the main deck.
- Toward the center of a ship. Also in smaller vessels, an
engine mounted inside the vessel driving a propeller shaft
through the hull.
- The spine of a ship that runs from bow to stern at the lowest
(Leeward) - Direction the wind is blowing relative to the
ship. The side of the ship opposite that of which the wind is
coming from is known as the Lee side.
- A tower used as an aid to navigation marking a hazard or point
of entrance. Usually consisting of a very bright light atop a
tower and often a foghorn or siren and radio beacon.
- A vessel used to mark a hazardous area and/or guide
shipping traffic, anchored in position with a mast mounted
beacon and equipped with a steam whistle for fog warning.
To lean exceedingly to one side or the other.
- A book for maintaining complete daily records,
- Long range aid to navigation. Operates off of (3) land based
radio towers to triangulate location.
- The means of tying a vessel to a pier, dock buoy or other
- Directing the course of a vessel.
- A Harbor or Port of Call providing protection for vessels.
Also the Left side of a vessel, marked by a red light or
- A round window in the side of a vessel that may be opened or
tightly closed to seal out water.
- Either side of a ship near the stern. "Quartering
Seas" are waves approaching from the front of the
ship at an angle.
Beacon - A land based, fixed radio beacon that aids navigation by
sending a radio signal. Vessels can determine location by taking
bearings from several different signals.
Lights - Two lights or Day-Marks, located a distance apart,
visible from one direction only. When one light is visible
directly above the other, you are in the marked channel for safe
- A ridge of
rocks, sand, or coral at or near the surface of a body of water.
- A vessels ability to operated in conditions usually found when
out to sea.
Bell - A bell used to signal the time on a ship. Generally
constructed of brass.
- A vessel operating in a clean, organized & proper
- An area of
rocks or sand at or near the surface of a body of water.
- A distress signal.
- The right side of a vessel, marked by a green light or
- The forward most part of a ship.
- The aft part of a ship.
- The regular rise and fall of the water level along a seacoast
or in an ocean port. Gravitational attraction of the moon is the
primary cause of tides. With the moon orbiting the earth every
24 hours and 50 minutes, low and high tides are about 12 hours
and 25 minutes apart.
- The point at which the water reaches on a vessel when
- The side of a vessel that is nearest the direction the wind is