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halyard
A line
used to hoist a sail
or spar.
The tightness of the halyard can affect sail
shape.
harbor
An anchorage
protected from storms either naturally or by manmade barriers.
harbormaster
The individual who is in charge of a harbor.
hatch
A sliding or hinged opening in the deck,
providing access to the cabin
or space below.
haul
Pulling on a line.
head
1) The front of a vessel.
2) The upper corner or edge of a sail.
3) The top or front of a part.
4) The toilet and toilet room in a vessel.
heading
The actual course
of the vessel at any given time.
headsail
Any sail forward
of the mast,
such as a jib.
head seas
Waves coming from the front of the vessel.
headstay
The most forward
forestay.
The line from the bow
or bowsprit
to the top of the mast.
This keeps the mast from falling toward the rear of the boat. The headstay is
the farthest forward of all the stays
on the boat.
heave
To throw or pull strongly on a line.
heaving line
A light line
used to be thrown ashore, from which a larger rope can then be pulled.
heaving to
Arranging the sails
in such a manner as to slow or stop the forward motion of the boat, such as when
in heavy
seas.
heavy seas
When the water has large waves or breakers
in stormy conditions.
heavy weather
Stormy conditions, including rough, high seas and strong winds. Probably
uncomfortable or dangerous.
heel, heeling
When a boat tilts away from the wind, caused by wind blowing on the sails
and pulling the top of the mast
over. Some heel is normal when under sail.
helm
The wheel
or tiller
of a boat.
helmsman
The person who is steering the boat.
high tide
The point of a tide
when the water is the highest. The opposite of low
tide.
hitch
A knot used to attach a line to a cleat
or other object.
holding ground
The type of bottom that the anchor
is set in.
holding tank
A storage tank where sewage is stored until it can be removed to a treatment
facility.
horseshoe buoy
A floatation device shaped like a U and thrown to people in the water in
emergencies.
hull
The main structural body of the boat, not including the deck,
keel
or mast.
The part that keeps the water out of the boat.
hull speed
The theoretical speed a boat can travel without planing, based on the shape of
its hull.
This speed is about 1.34 times the square root of the length of a boat at its waterline.
Since most monohull
sailboats
cannot exceed their hull speed, longer boats are faster.
hurricane
An intense tropical weather system with a well-defined circulation and maximum
sustained winds of 74 miles per hour (64 knots
or higher in the North Atlantic Ocean, the Northeast Pacific Ocean (east of the
International Date Line) or the South Pacific Ocean (east of 160° east
longitude). In other parts of the world, they are known as typhoons,
tropical
cyclones and severe
tropical cyclones.
hydrodynamic
A shape designed to move efficiently through the water.
hydrofoil
A boat that has foils
under its hull onto which it rises to plane across the water surface at high
speed.
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