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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back to top Power- driven vessel underway - showing overlap in cut-off ColRegs Home>ColRegs>Lights & Shapes>Lights General>Note: Arcs Note: Arcs The rules set out the arcs of visibility. It is not always possible to have an exact “cut-off”. Overlaps of up to 5° may be seen Diagram: plan of a vessel showing arcs of lights
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