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Maritime Knowledge base

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    • Bridge Equipment
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    • Maritime Law
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    • Safety
    • Security
    • Ship Construction
    • Ship Handling
    • Ship Stability
    • Shippie’s Escape
    • Surveys
    • Tankers
  • Colreg’s (ROR)
    • Index (Colreg’s)
    • Part A- General
      • Rule 1 – Application
      • Rule 2 – Responsibility
      • Rule 3 – General Definitions
    • Part B- Steering and Sailing
      • Section 1 (Rule 4 -10)
        • Rule 4 – Application
        • Rule 5 – Lookout
        • Rule 6 – Safe Speed
        • Rule 7 – Risk of collision
        • Rule 8 – Action to avoid collision
        • Rule 9 – Narrow Channels
        • Rule 10 – Traffic separation schemes
      • Section 2 (Rule 11 – 18)
        • Rule 11 – Application
        • Rule 12 – Sailing vessels
        • Rule13 – Overtaking
        • Rule 14 – Head on situation
        • Rule 15 – Crossing situation
        • Rule 16 – Action by give-way vessel
        • Rule 17 – Action by stand-on vessel
        • Rule 18 – Responsibilities between vessels
      • Section 3 (Rule 19)
        • Rule 19 – Conduct of vessels in restricted visibility
    • Part C- Lights and Shapes
      • Rule 20 – Application
      • Rule 21- Definitions
      • Rule 22 – Visibility of lights
      • Rule 23 – Power-driven vessels underway
      • Rule 24 – Towing and pushing
      • Rule 25 – Sailing vessels underway and vessels under oars
      • Rule 26 – Fishing vessels
      • Rule 27 – Vessels N.U.C or R.A.M
      • Rule 28 – Vessels constrained by their draught
      • Rule 29 – Pilot vessels
      • Rule 30 – Anchored vessels and vessels aground
      • Rule 31 – Seaplanes
    • Part D- Sound and Light Signals
      • Rule 32 – Definitions
      • Rule 33 – Equipment for sound signals
      • Rule 34 – Manoeuvring and warning signals
      • Rule 35 – Sound signals in restricted visibility
      • Rule 36 : Signals to attract attention
      • Rule 37 – Distress signals
    • Part E- Exemptions (Rule 38)
      • Rule 38 – Exemptions
    • Part F – Verification of compliance with the provisions of the Convention
      • Rule 39 – Definitions
      • Rule 40 – Application
      • Rule 41 – Verification of compliance
    • Annexes
      • Annex 1 – Positioning and technical details of lights and shapes
      • ANNEX II – Additional Signals for Fishing Vessels Fishing in Close Proximity
      • ANNEX III – Technical Details of Sound Signal Appliances
      • ANNEX IV – Distress Signals
  • Glossary
  • Contact

Notice of Protest

A letter issued by any participant in a voyage citing any condition with which issue is taken. This serves as a written record that the particular action or finding was questioned at the time of occurrence.For example a declaration made by the Master before a notary public or consular official when through stress of weather, there has been or the master fears that there might have been, damage to the vessel or cargo. Copies are frequently demanded by insurance underwriters in the event of a claim. … [Read more...]

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Notice of Readiness (NOR)

Notice served by the Master to inform the terminal/charterer the vessel is ready in all respects to load or discharge cargo. … [Read more...]

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Not under command (NUC)

Said of a vessel when unable to maneuver.(abbr. NUC): a vessel which through exceptional circumstances is unable to manoeuvre as required by the COLREGs … [Read more...]

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Norske Veritas (DNV)

Det Norske VeritasNorwegian classification society. … [Read more...]

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Net tonnage

The volumetric cargo capacity of a ship expressed on the basis of 100 cubic feet to the ton. On passenger vessels it also includes space used by passengers. … [Read more...]

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Net Registered Tonnage (NRT)

The internal capacity of a vessel measured in units of 100 cubic feet less the space occupied by boilers, engines, shaft alleys, chain lockers, officer’s and crew quarters and other spaces not available for carrying passengers or freight. Net registered tonnage is usually referred to as registered tonnage or net tonnage. … [Read more...]

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Net Capacity

The number of tons of cargo which a vessel can carry when loaded in salt water to her summer freeboard marks. Also called cargo carrying capacity, cargo deadweight, and useful deadweight. … [Read more...]

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Neptune (King Neptune)

The mythical god of the sea. … [Read more...]

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NAVTEX

Telegraphy system for transmission of maritime safety information, navigation and meteorological warnings, and urgent information to ships. The low-frequency system developed by IMO for the broadcast and automatic reception of MSI by means of direct-printing telegraphy. … [Read more...]

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NAVAREA

One of 16 areas into which the world's oceans are divided by the International Maritime Organization for the dissemination of navigation and meteorological warnings. … [Read more...]

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