There are currently 15 names in this directory beginning with the letter O.
Ochette.
The first white crests which form on the sea surface with a wind over 15 knots.
Offshore
Offshore navigation
Oilskin
Waterproof jacket, once made of waterproof canvas
One design
Series of boats with the same size and design which can compete with no compensated times.
One-off.
Racing boat prototype
Onshore wind
Side exposed to bad weather: wind and waves in a harbour or a roadstead
Optimist.
Boat with centreboard, chine hull and flat bottom designed by Clark Mills in 1954 ;she measures 2.30x1.13 m
ORC.
Offshore Racing Council: l' international organisation which is in charge of IOR classes and offshore regattas.
Orthodromic course
Course along the maximum circle and the shortest one between two points. See also‚ Lloxodromic
Oscar.
Term which represents ‚O‚ in the international phonetic alphabet.
Osmosis
The result of a catalyzation flaw of sealants in fiberglass hulls. Water enters through the gelcoat, it increases the inner volume and creates some bubbles which can delaminate the hull
Outboard
Everything out of the boat. Usually referring to an external engine
Outboard motor
A removable engine mounted on the stern of the boat, or in a motor well.