A measurement of speed, based on one minute of
latitude
A knot used to tie an end of rope to a sail or a fitting.
See Appendix 9.3 Three Essential Knots
Imaginary lines running parallel round the globe from
east to west. They are used in the measurement of
position and distance on a navigation chart
The part of the boat that is furthest away from the
direction in which the wind is blowing
The result of using crew weight as a ‘lever’ to
counteract heel caused by the wind
A way of stopping the boat temporarily by easing
sheets on a close reach
Unlike a buoyancy aid, a lifejacket will keep a person
fully afloat with their head clear of the water
Handles located at the back of the boat, used when
lifting
Imaginary lines running round the globe from north to
south, used with lines of latitude to measure position
and distance
When the wind briefly stops blowing as hard, there is
a ‘lull’ in the wind
The largest sail on a boat
The fitting that is attached to the sail slider on the
boom, which holds the sail in place
The rope used to control the mainsail
The rope that runs across the transom of the boat, to
which the mainsheet is attached
The fitting that, when shut, holds the mast in place
The pin that holds the mast gate shut
The groove that runs up the back of the mast into
which the luff of the mainsail is fed
The ‘well’ in the hull in which the mast sits, sometimes
referred to as the mast cup
The main block, usually fixed to the cockpit floor,
through which the mainsheet passes
The act of recovering a ‘man overboard’ from the
water
The spar that sails are hoisted up
The bottom section of a two-piece mast
The top section of a two-piece mast
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