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R&D research and development
RADIO OPERATOR Maintains and monitors radio, sends and receives messages. often Maintains Electronic Navigation equipment.
RAM random access memory
RCC rescue coordination centre
RCDS Raster Chart Display Systems
RCVR Receiver
RDF radio direction finder
Reach sailing with a beam wind
Ready about prepare to come about
Recap Recapitulation of the terms and conditions agreed
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RECAP Recapitulation of the terms and conditions agreed
Reef to reduce the size of a sail
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.
RENC Regional Electronic Navigational Chart Co-Ordinating Centre
RETURN CARGO a cargo which enables a ship to return loaded to the port or area where her previous cargo was loaded.
REVERSIBLE (Detention). If loading completed sooner than expected at load port, then days saved can be added to discharge operations.
Reversible-time Option for charterers to add together time allowed for loading & discharging relative to terms of a particular charter party
RF range finder, radio frequency
Rhumb line a straight line compass course between two points
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Rigging the standing rigging is the mast and support lines, running rigging is the lines with which you adjust the sails
RINA Royal Institution of Naval Architects, Registro Italiano Navale (classification society)
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 th
ROB remain on board (cargo, bunkers)
Rode the line and chain that connect the anchor to the boat
RODE the anchor line and/or chain.
ROLLING CARGO cargo which is on wheels, such as truck or trailers, and which can be driven or towed on to a ship.
Rom read only memory
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ROPE in general, cordage as it is purchased at the store. when it comes aboard a vessel and is put to use it becomes line.
Ro-ro roll on/roll off
ROV Remotely operated vehicle
RS Russian Maritime Register of Shipping (classification society)
RT Revenue Tonne (i.e. 1.0 metric tonne or 1.0 cubic meter, whichever greater). The overall RT is calculated on a line by line basis of the Packing List using the largest amount. The overall freight liability is calculated on the total RT amount, multiplied by the freight rate.
RT (R/T) radio telegraph, telegraphy, telephone
RTCM Radio Technical Commission for Maritime Services
RUDDER a vertical plate or board for steering a boat.
RUN to allow a line to feed freely.
Running a point of sail, going directly downwind
RUNNING LIGHTS Lights required to be shown on boats underway between sundown and sunup.
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