A Course for Safe Boating
The left side of a boat when you
are (inside) facing the bow; also a
destination or harbor.
A vessel propelled by mechanical
A whistle signal four to six seconds
Wheel or screw mechanism that
pushes water aft to propel the boat.
A protective edge on the deck of a
A white and orange marker used in the
USWMS to indicate danger, restricted
operations, or an excluded area.
Any condition in which visibility is
restricted by fog, mist, falling snow,
heavy rainstorms, sandstorms, smoke
or other causes.
The general term for all the lines
(ropes) of a vessel.
The right and duty to maintain course
An anchor line and/or chain.
In general, cordage as it is purchased
at the store. When it comes aboard a
vessel and is put to use it is referred to
as a “line.”
A small, flat-bottom, pointed boat
propelled by oars.
Long, narrow and relatively unstable
craft powered by oars. Used for
recreation and racing.
The control surface, usually aft by
which a boat is steered.
rules of the
The nautical traffic rules for
preventing collisions on the water.
required to be shown on boats
underway between sundown and
sunup, and during periods of reduced
Also known as a windsurfer. A board
similar to a surfboard that is propelled
by wind and sails.
A boat powered by wind and sails.
May or may not have an auxiliary
A larger vessel usually thought of as
being used for ocean travel. A vessel
able to carry a “boat” on board.
A one-second sound signal given by a
A green light on the starboard side
and a red light on the port side each
showing an unbroken light over an
arc of 112.5 degrees and so fixed to
show the light from right ahead to
22.5 degrees abaft the beam on its
respective side. In a vessel of less than
20 meters in length the sidelights may
be combined in one lantern carried on
the fore and aft centerline of the vessel
Any pole, as a mast, yard, boom or
gaff, supporting or extending a sail of
A channel marker that looks like a tall,
A buoy having no lateral significance
used to indicate an anchorage area,
fish net area, spoil grounds, military
exercise zone, etc.
Short for sun protection factor. This
is a rating indicator of how effective a
sunscreen is in blocking the harmful
effects of the sun.
Fore and aft lines used in mooring to
prevent a boat from moving forward or
astern while fast to a pier.
A knot used to join two lines of similar
size. Also called a reef knot.
The vessel required to first hold course
and speed when nearing another
vessel; the vessel which has the right-
of-way. However, the stand-on vessel is
also required to take any action neces
sary to avoid a collision if the give-way
vessel does not take early and signifi
A type of surfboard that provides
a platform for a person to stand up
and propel the device across the
water with a long-handled paddle.
The Coast Guard considers the stand
up paddleboard to be a vessel when
it is used outside of a swimming,
bathing, or surfing zone, subject to the
navigation and safety rules of other
paddlecraft. In California, the stand
up paddleboard is always considered
to be a vessel when a paddle is used
or carried, making it always subject to
the navigation and safety rules of other
The right side of a boat when you are
(inside) facing the bow.
When any vessel or object blocks a