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>Pilot Vessels Rule 29 Pilot Vessels  Only when engaged on pilotage duty, shall exhibit at or near the masthead:  two all-round lights: upper white lower red   and in addition to the above, when:  underway:  sidelights sternlight A vessel engaged in pilotage duties at anchor back to top Note that it can be difficult to distinguish an anchor light ... from a sternlight: Vessel engaged in pilotage duties underway A vessel engaged in pilotage duties at anchor A vessel engaged in pilotage duties underway - seen from astern or  at anchor:  shape light or lights     for a vessel at anchor
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