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N Narrow boat .... A vessel used on the canals, usually less than seven wide. Nautical almanac .... A reference book published annually containing navigation, tidal and astronomical data. Nautical mile .... Distance equal to one minute of latitude, i.e. approximately 2025 yards (1852 metres) Navigation buoy .... A buoy or more usually a series of buoys used to mark the edges of a channel. Buoyage. Navigation lights .... A system of lights displayed by all vessels during hours of darkness, that enables the identification of vessel type. Neap range .... The height difference between MHWN and MLWN Neap tide .... A tide with the smallest range, occurring during the first and last quarters of the moon. Nicholson .... A type of fisherman's anchor. Anchor Types. Nimbostratus .... A low dark layer of cloud. Cloud Types. Nimbus .... A rain cloud. Cloud Types. No go zone .... An area into which a sailing vessel is unable to sail without tacking. Nominal range .... The range at which a light is visible irrespective of either the height of the source or the viewing point. The measurement being made in conditions of ten miles visibility. November .... The letter N in the phonetic alphabet. Phonetic Alphabet. North Utsire .... The name given to a sea area off the coast of Norway. Nylon .... A material used in the production of rope. O Oakum.... Tarred fibres used for caulking. Oar .... A pole with a blade which is used to propel or steer a boat. Observed position .... The position of a vessel that is plotted on a chart using information gained from the observation of landmarks etc. Occulting .... A light is said to be occulting when the periods of light are longer than those of dark. Navigation Lights. Offing .... The more distant part of the sea which is in view. Off the wind .... A vessel is said to be off the wind when it is not sailing close hauled. Offshore .... Away from the land, e.g. an offshore wind. Olympic 470 .... A high performance racing dinghy. Olympic 49'er .... A high performance racing dinghy. One design .... A sailing vessel that has been built to comply with a strict set of rules so that it can compete on equal terms with other similarly built vessels. Onshore .... Towards the land, e.g. an onshore wind. Optimist .... International class. A small light dinghy. Oscar .... The letter O in the phonetic alphabet. Phonetic Alphabet. Outboard engine .... A engine fitted externally to the stern of a boat. Outhaul .... A line or tackle used to pull the foot of a sail out to its fullest extent. Outpoint .... A vessel that sails closer to the wind than its competitor is said to out point it. Outrigger .... A small hull on one or both sides of the main hull attached by booms, to improve stability. Overboard .... Over the side, into the water. Overfall .... A turbulent stretch of sea, caused by the meeting of currents or by a tide or strong current over a shoal. Over stand .... To remain too long on one tack, going beyond the intended point. |