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World Yachting Asia - Nautical terms Category: General technical and industrial > Nautical terms Date & country: 27/01/2011, CH Words: 246

Heave
To throw, as to heave a line ashore. The rise and fall of a vessel in a seaway.

Helm
The wheel or tiller controlling the rudder.

Hitch
A knot used to secure a rope to another object or to another rope, or to form a loop or a noose in a rope.

Hold
A compartment below deck in a large vessel, used solely for carrying cargo.

Hull
The main body of a vessel exclusive of spars and rigging.

Inboard
More toward the center of a vessel; inside; a motor fitted inside a boat.

Instruments
Marine instruments enable the sailor to measure and plot various aspects of his on-the-water experience in real time. Typically these include performance indicators such as wind speed and direction, boat speed and heading, and depth. More sophisticated systems can then take these basic measurements and calculate and display additional information such as true and apparent wind speed, course over g...

Intracoastal Waterway
ICW

Irons
Yacht is pointing into the wind, sail is flapping and probably also going backwards.

Jacobs Ladder
A rope ladder, lowered from the deck, as when pilots or passengers come aboard.

Jetty
A structure, usually masonry, projecting out from the shore; a jetty may protect a harbour entrance.

Jib
Triangular Sail Set On A Stay Forward Of The Mast.

Jibe
Hanging sail from one side to another with wind astern.

Keel
The main structural member of a hull (backbone)

Kicker (Also Called A Vang)
A device used to keep the boom from rising.

Knot
A nautical mile-per-hour measure of speed. A nautical mile is approximately 6076 feed. (Astature mile is 5280 feet.) Also a means for joining two lines together or fastening a line to an object.

Latitude
The distance north or south of the equator measured and expressed in degrees.

Lay Line
The course on which your yacht, sailing close - hauled on starboard tack, can just make a windward mark which is to be rounded to port is the starboard - tack lay line for that mark, and the most windward line on which you would approach the mark on port tack is the port - tack lay line.

Lazarette
A storage space in a boat's stern area.

Lee
The side sheltered from the wind.

Lee Shore
One onto which wind or current could force a boat.

Leeside or Leeward
The side opposite that from which the wind blows.

Leeway
The sideways movement of the boat caused by either wind or current.

Leg
The straight segments of a route between waypoints. A route with four waypoints has three legs.

Lie To
See heave to.

Line
Rope and cordage used aboard a vessel.

List
The leaning of a vessel to one side caused by misplaced gear or shifting cargo.

Log
A record of courses or operation. Also, a device to measure speed.

Longitude
The distance in degrees east or west of the meridian at Greenwich, England.

Lubber's Line
A mark or permanent line on a compass indicating the direction forward parallel to the keel when properly installed.

Luff
Forward edge of a fore and aftsail.

Luffing
Pointing the yacht into the wind - sail flapping.

Magnetic Deviation
A local magnetic field on board a vessel. Can interfere with the earth`s magnetic field and create compass readings that may deviate from the actual magnetic heading. The deviation will vary with the actual heading.

Magnetic Heading
heading relative to magnetic north

Mainsheet
Line that controls the position of the mainsail

Mark (Buoy)
An object the sailing instructions require a yacht to pass on a specified side.

Marlinespike Seamanship
General knowledge of knots, bends, hitches, splices and care of rope.

Marlinspike
A tool for opening the strands of a rope while splicing.

Mast
A pole usually going straight up from the deck (height can be tuned for different body weights), used to attach sail and boom.

MEA
National Marine Electronics Association.

Midship
Approximately in the location equally distant from the bow and stern.

MMSI
Maritime Mobile Service Identity. Unique identification number for a vessel, for use in Digital Selective Calling.

MOB
Man overboard.

MOB Function
Starts navigating back to the place where someone fell overboard.

Mooring
An arrangement for securing a boat to a mooring buoy or a pier.

Nautical Mile
One minute of latitude; approximately 6076 feet

Nautical Mile Nm
1 nm is 1852 meters

Navigation
The art and science of conducting a boat safely from one point to another.

Navigation Rules
The regulations governing the movement of vessels in relation to each other, generally called steering and sailing rules.

Nmea0183
(NMEA0183) NMEA stands for National Marine Electronics Association (of the USA). NMEA 0183 was first introduced in 1983 as a voluntary industry standard for data communications among shipboard electronic devices. It uses a simple ASCII, serial communications protocol that defines how data is transmitted in a "sentence" from one `talker` to one or more `listeners` at a time, and therefore cannot ...

Nmea2000
(NMEA2000) Currently the accepted standard across the international marine industry, NMEA 2000 is much more sophisticated than NMEA 0183 in that it allows multiple units to simultaneously both transmit and receive data. With the inclusion of multifunction displays into a networked system the user can then choose any combination of data outputs to be displayed at any position or for any situation. ...

Obstruction
An object that a yacht could not pass without changing course substantially to avoid it. e.g. a mark, a rescue boat, the shore, perceived underwater dangers or shallows.

Outboard
Toward or beyond the boat's sides. A detachable engine mounted on a boat's stern.

Outhaul
Line or device used to tension the foot of a sail.

Overboard
Over the side or out of the boat.

Painter
A line tied to the bow of a dinghy for towing or making fast.

Pay Out
Slacken or let outline.

Pennant
Emblematic flag.

Pier
A loading platform extending at an angle from the shore.

Piling
Support, protection for wharves, piers etc.; constructed of piles (see PILE)

Pitchpole
Capsize end over end.

Planing
A boat is said to be planing when it is essentially moving over the top of the water rather than through the water.

Planing Hull
A type of hull shaped to glide easily across the water at high speed.

Port
The left side of a boat looking forward. A harbour.

Port Side
Left (red)

Port Tack
Wind across the portside.

Privileged Vessel
A vessel which, according to the applicable Navigation Rule, has right-of-way (this term has been superseded by the term "stand-on").

Quartering Sea
Sea coming on a boat's quarter.

Range (Radar)
The distance between the center of the radar image and the outer range ring. The scale is shown in the top left corner of the radar window.

Range Rings
Concentric circles extending from your boat (usually at the center of the radar window) and used to estimate distances to objects. The scale is shown in the top left corner of the radar window.

Reach
Point of sailing with wind near the beam.

Reaching
Sailing with the sail eased.

Reefing
Reducing the amount of sail area.

Relative Bearing
Direction of an object relative to a boat's heading.

Rig
The arrangement of a yacht's mast, sails and spars.

Rode
The anchor line and/or chain.

Route
Two or more waypoints linked in sequence to form a course for the boat.

Rudder
Underwater part of a boat used for steering.

Run
To allow a line to feed freely.

Running
Sailing before the wind with the sail out.

Running Lights
Lights required to be shown on boats underway between sundown and sunup.

Sail Trim
The position of the sails relative to the wind and desired point of sail. Sails that are not trimmed properly may not operate efficiently. Visible signs of trim are luffing, excessive heeling, and the flow of air past telltales. Also see sail shape.

Sand Bar
An area in shallow water where wave or current action has created a small, long hill of sand. Since they are created by water movement, they can move and may not be shown on a chart.

Satellite Navigation
A form of position finding using radio transmissions from satellites with sophisticated on-board automatic equipment.

Scope
Technically, the ratio of length of anchor rode in use to the vertical distance from the bow of the vessel to the bottom of the water. Usually six to seven to one for calm weather and more scope in storm conditions.

Screw
A boat's propeller.

Scupper
An opening in a deck or cockpit permitting water to drain out.

SDGPS
Satellite Differential Global Positioning System - will provide position corrections from received satellite signals (WAAS, EGNOS and MSAS).

Sea Anchor
Device used for slowing a boat down, drogue.

Sea Cock
A through hull valve, a shut off on a plumbing or drain pipe between the vessel's interior and the sea.

Sea Room
A safe distance from the shore or other hazards.

Seamanship
All the arts and skills of boat handling, ranging from maintenance and repairs to piloting, sail handling, marlinespike work, and rigging.

Seaworthy
A boat or a boat's gear able to meet the usual sea conditions.

Secure
To make fast.

Set
Direction toward which the current is flowing.

Sextant
Navigational instrument used to determine the vertical position of a sky object such as the sun, moon or stars. Used with celestial navigation.

Sheet
Line used to position a sail relative to the wind.

Ship
A larger vessel usually thought of as being used for ocean travel. A vessel able to carry a "boat" on board.

Shroud
Standing rigging that supports a mast laterally.

Skeg
An extension of the keep for protection of propeller and rudder.