IRPCS


Hierarchy There is a sensible pecking order built into the IRPCS.


1. Vessel Not Under Command (NUC). 2. Vessel Restricted in her Ability to Manoeuvre (RAM). 3. Vessel Constrained by her Draft (CBD). 4. Vessel Engaged in Fishing. 5. Sailing Vessel. 6. Power-Driven Vessel. 7. Seaplane/Wing-in-Ground effect (WIG) craft.


A more-manoeuvrable vessel must not impede the passage of the less- manoeuvrable one.


A small power vessel (including a sailing yacht under engine) is at the bottom of the pile.


Yachts


At anchor


Motorsailing 63


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