Glossary — R

19 terms starting with R.

• Radar SART (SART)
  X-band search and rescue transponder that responds to a 9 GHz radar pulse by generating a distinctive 12-dot line on the rescuing vessel's radar display.
• Radio Officer (R/O)
  An officer certified to operate GMDSS equipment and manage all radio communications on board; a role increasingly merged with other duties.
• Recommended Track
  A route of undefined width for the convenience of vessels in transit, indicated on charts but not mandatory.
• Reefer
  A refrigerated container or cargo space maintaining a controlled temperature for perishable goods during transport.
• Reefer Container
  A refrigerated ISO container with an integral refrigeration unit maintaining controlled temperatures for perishable cargo.
• Reefer Plug
  An electrical socket in a ship's hold or on deck providing power to a reefer container's refrigeration unit.
• Remotely Operated Vehicle (ROV)
  Tethered underwater robot used for inspection, repair, and intervention work, typically operated from an MPSV or DSV.
• Renewal Survey
  A statutory survey conducted to renew a SOLAS or MARPOL certificate for a further period, typically five years.
• Rescue Coordination Centre (RCC)
  Generic term for a coordination centre handling SAR; MRCC is the maritime variant, ARCC the aviation variant.
• Restricted in Ability to Manoeuvre (RAM)
  Vessel which from the nature of her work is restricted in her ability to manoeuvre; shows ball-diamond-ball / R-W-R lights.
• Rhumb Line
  A course that crosses all meridians at the same angle, appearing as a straight line on a Mercator chart.
• RightShip
  A third-party maritime risk-assessment platform providing GHG ratings and vetting inspections used by cargo owners to screen vessels.
• RightShip Star Rating
  Risk rating (1–5 stars) used by dry-bulk charterers; combines technical, environmental, and inspection data.
• Ro-Ro Vessel
  A ship with built-in ramps allowing wheeled cargo such as cars, trucks, and trailers to be driven directly on and off.
• Rogue Wave (extreme wave)
  Wave more than ~2× the significant wave height; rare but documented and dangerous.
• Roll-On/Roll-Off (RoRo)
  Cargo handling method where wheeled vehicles or trailers drive on and off the vessel under their own power via ramps.
• Rotterdam Rules
  The 2008 UN convention on contracts for international carriage of goods wholly or partly by sea, modernising earlier cargo liability regimes.
• Running Fix
  A position obtained from two or more bearings of the same object taken at different times and advanced along the course line.
• Running Moor
  Anchoring with two anchors by laying the first anchor while making way ahead, then dropping the second after veering chain.