Module 16 - Pilotage
What Is Pilotage?
What you will learn
Command a confined-water approach as short, observable stages with independent checks, explicit limits and a safe hold or abort decision.
Pilotage is the close-control phase of navigation near harbours, channels, rivers and hazards. At Yachtmaster level, the plan must remain usable when traffic, visibility, tide or equipment differs from the assumption.
Confined water compresses the time and sea room available to notice and correct an error. Pilotage therefore combines current charts and publications with visual marks, depth, heading, distance, time, radar or electronic position, traffic information and local instructions. It is not visual navigation instead of instruments, and no single display should carry the whole decision.
Break the route into stages bounded by an observable cue or decision. For each stage state the intended track and speed, expected sequence of marks, depth or clearing limit, traffic and communications requirement, and the evidence needed before the next turn. Brief who will steer, identify marks, monitor depth, make calls and handle lines while one person retains the complete picture.
Execute the plan as a loop: observe, compare, control and confirm. If an expected cue is absent, the depth trend is wrong, traffic removes the intended route or the vessel reaches a pre-briefed gate without enough evidence, slow down, hold or abort while room remains. A plan supports command judgement; it does not make changed conditions safe.
| Control loop | Question aboard | Useful evidence |
|---|---|---|
| Observe | What can we identify now? | Mark, light, transit, depth, bearing, range or position |
| Compare | Does it match this stage? | Expected side, sequence, time, depth trend and traffic |
| Control | What safe change is needed? | Course, speed, crew task, call, hold or abort |
| Confirm | Did the action work? | New alignment, bearing trend, clearance, depth and traffic picture |
Recognise a plan that is starting to fail
On a harbour approach the next green lateral mark is not visible, depth is reducing earlier than planned and a ferry reports that it is leaving the entrance.
1. Name the mismatch
Do not continue merely because the chartplotter route still lies ahead; independent observations no longer support the plan.
2. Protect room
Reduce speed or move to the pre-briefed holding area before the entrance becomes committed.
3. Rebuild the picture
Check position, tide, charted depth, traffic and the identity of the expected mark, then continue only with an explained safe route.
Sense check: A good response creates thinking time. Pressing on while trying to identify the problem removes it.
Common mistake or limitation
- Pilotage is not visual navigation instead of instruments; it is disciplined cross-checking where the margin is small.
- Passing the planned gate without the required cue or depth turns a manageable uncertainty into a close-quarters problem.
Recap
- Prepare the route as observable stages before workload rises.
- Compare independent evidence continuously rather than following a line blindly.
- Keep a holding or abort option available until the entrance is understood.
Optional quick check
Section 1 of 12
The expected mark is absent and the depth trend disagrees with the plan. What is the safest first response?
Sources and factual review
Reviewed 2 September 2026 - Compass Revision editorial review.
Continue studying Pilotage
This public lesson is part of Revision Module 16. Full revision access adds the guided Learn, Practise and Test flow, flashcards and revision progress.