R search radius
R&D research and development
R/T radio telephony
rabbet A joint formed by fitting one member into a groove in the face or edge of a second member.
Race A strong, confused tide or current
Radar Radio detection and ranging. An electronic instrument that uses radio waves to find the distance and location of other objects. Used to avoid collisions, particularly in times of poor visibility.
Radio An instrument that uses electromagnetic waves to communicate with other vessels. VHF (very high frequency) radios are common for marine use, but are limited in range. SSB (single sideband) radios have longer ranges.
radio beacon navigational aid that emits radio waves for navigational purposes. The radio beacon's position is known and the direction of the radio beacon can be determined by using a radio direction finder.
RADIO OPERATOR An officer who operates and controls the shipboard communication equipment.
Radome: A bun-shaped cover placed over a radar scanner to prevent risk of fouling and to protect it from the weather.
Raft 1) A small flat boat, usually inflatable 2) To moor with more than one boat tied together, usually using only one boat's anchor and rode.
Rafting: Overlapping of edges of two ice-floes, so that one floe is partly supported by the other.
rail The railing around the deck.
Rail The edge of a boat's deck.
Rail Car A wheeled wagon used for the carriage of cargo by rail.
Rail Consignment Note A document evidencing a contract for the transport of goods by rail.
Rake A measurement of the top of the mast's tilt toward the bow or stern.
RAM random access memory
Ramp An artificial inclined path, road or track along which wheeled vehicles, cargo and trailers may pass for the purpose of changing their elevation and facilitating the loading and unloading operation (e.g. an entrance way into a Roll-on Roll-off vessel
Rams head: This is the rudder-post of a traditional narrow boat, normally topped by a rope-knot known as a Turk's head.
RANP regional air navigation plan
Rate 1. The price of a transport service.2. Quantity, amount or degree measured or applied.
Rate of Calculation A factor for the calculation of an amount.
Rate of Turn The figure indicating the speed of a change of course of a means of transport expressed in degrees per minute.
Rating A method of measuring certain dimensions of yachts
Rating A class to which an article is assigned.
Ratlines Horizontal ropes between shouds to allow rapid climbing.
Rattan Short bamboo cane
RCC rescue co-ordination centre
RCDS Raster Chart Display Systems
RDF radio direction finder
Reach sailing with a beam wind
Reach: Straight stretch of water between two bends in a river or channel.
Reaching Sailing across the wind or any course between close-hauled and running (close, beam, broad).
Ready About An expression used to indicate that the boat is about to tack.
Rebate That part of a transport charge which the carrier agrees to return.
Receipt A written acknowledgement, that something has been received.
Receiving Carrier The carrier receiving a consignment on behalf of a carrier, agent or shipper for onward transport.
Receiving Stock The stock comprising all the goods that have arrived at the door of the receiving organisation and which is not yet available in the stock of that organisation.
Reconditioning All activities connected with restoring and or adjusting the packaging of a product. In such manner that it can be presented to the customer in the requested form.
Reconditioning of Garments The act or process of bringing garments after transport in shop's condition.
Rector: Name given to Master of a ship in 11th and 12 centuries.
Redelivery 1. Return of a shipment to the party who originally delivered it to the carrier (air cargo).2. Return of a charter vessel to the owners.
Reef To partially furl a sail. Done in strong winds to reduce strain.
Reef A line of rock and coral near the surface of the water.
Reef Points Light line on a sail to assist in reefing. Several rows, allow single, double, or treble reefing.
Reef tackle Blocks and ropes used to reef sails.
Reef: To reduce the size of a sail.
Reefer Midshipman. Their duty at sail-making station was supervising on the yards.
REEFER Refrigerator ship; a vessel designed to carry goods requiring refrigeration, such as meat and fruit. A reefer ship has insulated holds into which cold air is passed at the temperature appropriate to the goods being carried.
REEFER BOX An insulated shipping container designed to carry cargoes requiring temperature control. It is fitted with a refrigeration unit which is connected to the carrying ship's electrical power supply.
Reefer Cargo Cargo requiring temperature control.
Reefer Container A thermal container with refrigerating appliances (mechanical compressor unit, absorption unit etc.) to control the temperature of cargo.
reefing lines Lines used to pull the reef in the sail.
Reeve To pass something through a hole
Reeve Leading a line through a block or other object.
refasten The periodic replacement and repair of bolts, spikes and other fastenings that hold together the hull of a wooden vessel.
Refit: Removal of worn or damaged gear and fitting of new gear in replacement.
Refund The repayment to the purchaser of the total charge or a portion of that charge for unused carriage.
Region Specified geographical area for operational purposes.
Register Ton The unit of measurement for the internal capacity of a vessel whereby one register ton equals 100 cubic feet (2.83 cubic meter). The gross (bruto) tonnage comprises all spaces below the main (tonnage) deck and the enclosed spaces above the main (tonnage)
Registration Authority (Key Management) Registration Authority is used as an entry point for users to set-up links by using some existing trusted means such as registered letters of personal enrolment.
Regroupage The process of splitting up shipments into various consignments (degroupage) and combining these small consignments into other shipments (groupage).
Re-invoicing The procedure whereby goods shipped directly from a supplier to the customer are invoiced in two stages: at first by the supplier to an intermediary and subsequently by the intermediary to the customer.
Rejection Non-acceptance of e.g. cargo.
Release Order A document issued by or on behalf of the carrier authorising the release of import cargo identified thereon and manifested under a single Bill of Lading.
Reliability of Delivery The reliability of a supplier concerning the agreed terms of delivery with regard to the quality, quantity, delivery time, conditions and price.
RENC Regional Electronic Navigational Chart Co-Ordinating Centre
Replacement Indicating that a subject is interchangeable with another subject, but which differs physically from the original subject in that the installation of the replacement subject requires extra machining or provisions in addition to the normal application and
Replenishment Completion of stock.
Repudiation The denial by a user of having participated in part or all of a communication.
Rerouting The route to be followed as altered from the one originally specified in the transport document.
Rescue An operation to retrieve persons in distress, provide for their initial medical or other needs, and deliver them to a place of safety
Rescue action plan A plan for rescue operations normally prepared by the SMC for implementation by the OSC and facilities on-scene.
Reservation Allotment in advance of space or weight capacity. Also referred to as 'booking'.
Reservoir: Used to store water to replenish the upper levels of a canal or canalised waterway due to the use of locks.
Reservoir: Used to store water to replenish the upper levels of a canal or canalised waterway due to the use of locks.
Resources Organisations, People or Computer systems carrying out the activities.
Responsible Carrier 1. The carrier liable under the terms of a consortium Bill of Lading.2. Carrier responsible for the transport of goods as indicated in the transport document.
RETURN CARGO A cargo which enables a ship to return loaded to the port or area where her previous cargo was loaded.
Return Port: The proper return port of a discharged seaman.
Returns Goods returned to their place of acceptance.
Revenue Amounts of income stemming from the provision of transport services.
Reverse Distribution The collection of used, damaged, or outdated products and/or packaging from end-users.
RF range finder, radio frequency
Rhumb line A line that passes through all meridians at the same angle. When drawn on a Mercator chart, the rhumb line is a straight line. However the Mercator chart is a distortion of a round globe on a flat surface, so the rhumb line will be a longer course than a great circle route.
Ribs The wood that forms the boat's frame
Ride To lie at anchor
ride out To weather a storm, either at sea or at anchor.
Riding light An all around white light
riding sail Also called a stability sail. Any small sail set to help the boat maintain its direction without necessarily moving, as when at anchor or in heavy weather.
Rig 1) A combination of sails and spars.2) To prepare the rig before sailing.
Rig The way a boats spars and sails are arranged
Rigging General term for ropes leading aloft for support or control.
rigging Collectively, all the ropes and chains used to support and work the masts, yards, booms and sails of a vessel.
Rigging The system of all the wires and ropes
Right To return a boat to its upright position.
rigid inflatable A small inflatable boat that has a solid hull but has buoyancy tubes that are inflated to keep it afloat.
RINA Royal Institution of Naval Architects, Registro Italiano Navale (classification society)
Rinacertificate Certificate issued by the Italian Government for carrying dangerous goods in Italian Waters.
River navigation: A river that has been fitted with locks, dredged and straightened to allow passage. (See also Canalisation)
RMT National Union of Rail, Maritime And Transport Workers
RNC Raster Navigational Chart
RO/RO SHIP Freight ship or ferry with facilities for vehicles to drive on and off (roll-on roll-off); a system of loading and discharging a ship whereby the cargo is driven on and off on ramps. Equipped with large openings at bow and stern and sometimes also in the
Roach The curved leech of a sail
Road Carrier Party undertaking transport by road of goods from one point to another such as indicated in the contract.
Road Vehicle A means of transport capable and allowed to move over public roads and other landways.
Roaring Forties A region between 40 South and 50 South where westerly winds circle the earth unobstructed by land.
ROB remain on board (cargo, bunkers)
RODE The anchor line and/or chain.
Rode A line or chain attached to an anchor.
Roll A side-to-side motion of the boat, usually caused by waves.
Roll Trailer Special trailer for terminal haulage and stowage on board of Roll-on Roll-off vessels.
roller furling A method of storing a sail, usually by rolling the jib around the headstay or rolling the mainsail around the boom or on the mast.
roller reefing A system of reefing a sail by partially furling it. Roller furling systems are not necessarily designed to support roller reefing.
ROLLING CARGO Cargo which is on wheels, such as truck or trailers, and which can be driven or towed on to a ship.
Rolling Resistance The total frictional force that a tire, a set of tires or all the tires on a vehicle is developing with the road.
Roll-on Roll-off System of loading and discharging a vessel whereby the cargo is driven on and off by means of a ramp.
Rom read only memory
Rooming: The navigable water to leeward of a vessel.
Rope Traditionally, a line must be over 1 inch in size to be called a rope.
Rope Yarn A thread of hemp, which twisted together with others forms a rope.
Rope Yarn Sunday A day off.
Ro-ro roll on/roll off
Rotation Sequence in which a vessel calls at the ports on her itinerary.
Round Bilge : The name given to a hull shape for a displacement or semi displacement boat that has to push through the water. (See also Hard Chine & Deep Vee)
Round Trip A voyage, a journey etc. to a certain place, port or country and back again.
Rouse Get out or get up.
Route The track along which goods are (to be) transported.
Routing 1. The determination of the most efficient route(s) that people, goods, materials and or means of transport have to follow.
ROV Remotely operated vehicle
Roving bridge: This is a bridge where the towpath crosses from one side of a waterway to the other. They are often curved in such a way so that the towrope does not have to be unfastened. Also known as a Turnover bridge.
Row A method of moving a boat with oars. The person rowing the boat faces backward, bringing the blade of the oars out of the water and toward the bow of the boat, then pulling the oars through the water toward the stern of the boat, moving the boat forward.
Row A vertical division of a vessel from starboard to portside, used as a part of the indication of a stowage place for containers. The numbers run from midships to both sides.
Rowboat A small boat designed to be rowed by use of its oars. Some dinghies are rowboats.
Rowlock A space in the gunwale for an oar
royal mast The small mast next above the topgallant mast.
Royal mast Topmost mast.
Royals Topmost sails.
RRODE The anchor line and/or chain.
RS Russian Maritime Register of Shipping (classification society)
RSC rescue sub-centre
RT (R/T) radio telegraph, telegraphy, telephone
RTCM Radio Technical Commission for Maritime Services
RTG radio telegraphy
RTT radio teletype
rub rail, rub strake, rub guard A rail on the outside of the hull of a boat to protect the hull from rubbing against piles, docks and other objects.
RUDDER A vertical plate or board for steering a boat.
Rudder a fin under the stern of the boat used in steering
Rudder Used for steering the vessel
Rudder post The post that the rudder is attached to. The wheel or tiller is connected to the rudder post.
Rummage: Originally meant "to stow cargo". Now, means "to search a ship carefully and thoroughly".
RUN To allow a line to feed freely.
Run To sail with the wind aft
run aground To take a boat into water that is too shallow for it to float in; the bottom of the boat is resting on the ground.
Run Out: To put out a mooring, hawser or line from a ship to a point of attachment outside her.
Runner Also known as running backstay. Adjustable stay used to control tension on the mast.
Running 1) A point of sail where the boat has the wind coming from aft of the boat.2) Used to describe a line that has been released and is in motion.
Running a point of sail, going directly downwind
Running backstay A movable backstay
running backstay Also known as a runner. Adjustable stay used to control tension on the mast.
running bowline A type of knot that tightens under load. It is formed by running the line through the loop formed in a regular bowline.
running lights Navigational lights that are required to be used when a vessel is in motion.
Running rigging The generic term for sheets and halyards
Running Rigging Lines that controlled yards and sails.