Glossary — N

15 terms starting with N.

• Nairobi Wreck Removal Convention
  International convention (entered into force 2015) that gives coastal states the right and obligation to remove hazardous wrecks in their EEZ at the registered owner's expense.
• NAVAREA
  One of sixteen geographic sea areas defined by IMO/IHO for the co-ordination of worldwide navigational warning broadcasts.
• NAVAREA (NAVAREA)
  One of 21 IMO/IHO-designated sea areas within which a co-ordinating authority issues numbered navigational warnings to mariners.
• Navigational Telex (NAVTEX)
  An automated medium frequency broadcast system transmitting navigational warnings, weather forecasts, and search and rescue notices.
• NAVTEX (Navigational Telex)
  Automated narrow-band direct-printing system broadcasting Maritime Safety Information on 518 kHz (international) and 490 kHz (national) within 200–400 NM of coastal transmitters.
• NAVTEX Frequencies
  International NAVTEX uses 518 kHz (English); national NAVTEX 490 kHz; tropical 4209.5 kHz.
• Near-Miss Reporting
  Documented submission of an incident that did not cause harm but had the potential to.
• Neo-Panamax / New-Panamax
  Maximum vessel size for the post-2016 Panama Canal expansion: 366 m LOA × 49 m beam × 15.2 m draft tropical fresh.
• Newcastlemax
  Bulker class sized for the Port of Newcastle, Australia (50 m beam max): ~205,000 DWT, 300 m LOA, 18.5 m draft.
• Northern Sea Route (NSR)
  Russian Arctic shipping route along Siberia from Kara Gate to Bering Strait; transits regulated by Glavsevmorput (NSR Administration).
• Not Under Command (NUC)
  Vessel which through exceptional circumstance cannot manoeuvre as required by the rules; shows two black balls / two red lights vertically.
• Notice of Readiness (NOR)
  A formal written notice given by the master to the charterer or shipper that the vessel has arrived and is ready to load or discharge.
• NOx Tier III
  Strictest IMO NOx limit (~3.4 g/kWh at 130 rpm); applies to engines >130 kW installed on ships built ≥2016 trading in NOx ECAs.
• NUC (Not Under Command) (NUC)
  COLREG Rule 3(f) status where a vessel is unable to manoeuvre due to exceptional circumstances (steering failure, engine failure) and cannot keep out of the way of another vessel.
• NYPE Charter
  New York Produce Exchange standard time charter form, widely used for dry-cargo time charters.