Yachtmaster Offshore Standard: Pilotage

Build one coherent con. State who has the con, who steers, who keeps the outside lookout, who monitors depth and position, and who handles communications or deck preparation. Use closed-loop reports: the crew member names the observation and reference, the skipper acknowledges its meaning, and the helm repeats the ordered change. Permission from port control manages movement; it does not prove that the water, traffic or manoeuvre is safe for this yacht.

At every commitment gate compare evidence that does not share the same failure. A chartplotter and a repeater using the same GNSS antenna, power supply or chart data are corroborating displays, not independent fixes. Add physical cues, depth trend, compass or bearing, time and distance, radar where fitted, and current local information. If two sources conflict, name the conflict and protect sea room while it is resolved.

Control speed to buy observation and decision time, but do not turn 'slower' into a universal answer. The vessel still needs steerage, must remain controllable in wind or stream, and needs enough power and room for the briefed escape. Expected time, depth and cue sequence are monitoring tolerances rather than targets to chase after a plan has started to fail.

Keep a gate closed when a material assumption changes. An obscured leading light, unexpected depth, departing ferry, reduced engine output or crew task overload requires the skipper to hold, abort or rebuild the route before commitment. Re-plan and rebrief the complete affected stage rather than silently changing one heading or waypoint.