Sail Skills - ColRegs Free Guide to ColRegs (the International Regulations for Preventing Collisions at Sea, the IRPCS or Collision Regs). Guidance covers all aspects with animations, pictures and diagrams. Aimed at small vessel users but suitable for professional mariners. Especially recommended for RYA examination candidates.
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ColRegs Home>ColRegs>Lights & Shapes>Restricted Ability to Manoeuvre>Diving Operations - Smaller Vessels A small vessel engaged in diving operations showing flag A and appropriate lights back to top These signals are not distress signals A small vessel engaged in diving operations International Code Flag A "I have diver down; keep well clear at slow speed" International Code Flag A - "I have diver down; keep well clear at slow speed" The flag shall be not less than 1m in height and “measures shall be taken” to ensure all-round visibility A small vessel engaged in diving operations showing flag A Note: Despite the requirement for the flag to be rigid it rarely is in fact! A vessel recovering a navigation mark - restricted in her ability to manoeuvre A small vessel engaged in diving operations A vessel engaged in underwater operations where an obstruction exists A vessel engaged in mine clearance operations General requirements Operations with obstruction Diving operations smaller vessels Mine clearance
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