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main mast
The tallest (possibly only) mast
on a boat.
mainsail
The main sail
that is suspended from the main
mast.
main sheet
The line
used to control the mainsail.
main topsail
A topsail
on the main
mast.
make fast
To attach a line
to something so that it will not move.
marina
A place where boats can find fuel, water and other services. Marinas also
contain slips
where boats can stay for a period of time.
mast
Any vertical pole on the boat that sails are attached to. If a boat has more
than one mast, they can be identified by name.
master
The person in charge of a vessel. The captain.
masthead
The top of a mast.
mate
An assistant to the captain.
mayday
An internationally recognized distress signal used on a radio
to indicate a life-threatening situation. Mayday calls have priority over any
other radio transmission and should be used only if there is an immediate threat
to life or vessel. More urgent than a pan
pan or securite
call.
meridian
A longitude
line. Meridians are imaginary circles that run through both poles.
mizzen mast
A smaller aft
mast
on a ketch
or yawl
rigged
boat.
mizzen sail
The sail
on the aft
mast
of a ketch
or yawl
rigged
sailboat.
mizzen staysail
A small sail
that is sometimes placed forward
of the mizzen
mast.
monohull
A boat that has only one hull,
as opposed to multihull
boats such as catamarans
or trimarans.
moor
To attach a boat to a mooring,
dock,
post, anchor,
etc.
mooring
A place where a boat can be moored.
Usually, a buoy
marks the location of a firmly set anchor.
mooring buoy
A buoy
marking the location of a mooring.
Usually attached to an anchor
by a small pendant.
mooring line
A line
used to secure a boat to an anchor,
dock
or mooring.
Morse code
A code that uses dots and dashes to communicate by radio
or signal lights.
motor
1) An engine.
2) The act of using an engine to move a boat.
motor sailer
A boat designed to use its motor
for significant amounts of time and use the sails
less often than a normal sailboat.
mount
1) An attachment point for another object.
2) The act of putting an object on its mount.
multihull
Any boat with more than one hull,
such as a catamaran
or trimaran.
mushroom anchor
A type of anchor
with a heavy, inverted mushroom-shaped head. Mushroom anchors are used to anchor
in mud and other soft ground.
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