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    • Part A- General
      • Rule 1 – Application
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    • Part B- Steering and Sailing
      • Section 1 (Rule 4 -10)
        • Rule 4 – Application
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      • Section 2 (Rule 11 – 18)
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      • 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
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You are here: Home / Colreg's / Part C- Lights and Shapes / Rule 20 – Application
Part C Lights and Shapes

Rule 20 – Application

Rule 20 : Application

a. Rules in this part shall be complied with in all weathers.

b. The Rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these Rules or do not impair their visibility or distinctive character, interfere with the keeping of a proper look-out.
c. The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset and in restricted visibility and may be exhibited in all other circumstances when it is deemed necessary.
Meaning: Under all circumstances where the watch keeper may determine that the
showing of the Navigation lights would enhance the visibility of the ship or would enhance own ship’s aspect better to an observing vessel.

d. The Rules concerning shapes shall be complied with by day.
e. The lights and shapes specified in these Rules shall comply with the provisions of annex I to these Regulations.

Related:

  • Convention on the International Regulations for Preventing…
  • Annex I - Positioning and technical details of lights and…
  • Condition Assessment Scheme (CAS)
  • Rule 3 - General Definitions
  • UNCLOS - Salient Features, Objectives, Maritime Zones,…
  • Ballast Water Management - Merchant Ships
Related Article:   Rule 26 - Fishing vessels

By Cult of Sea Filed Under: Part C- Lights and Shapes Tagged With: application, colregs, rule20

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