Observe and identify
Developing level, about 2 min. International COLREGs / IRPCS.
The situation
A vessel ahead is showing a daytime shape. Inspect the shape and its vertical arrangement with the binoculars. The vessel’s name and status are withheld until your answer.
Which operation or status does this daytime signal indicate?
- Engaged in fishing
- Not under command
- Restricted ability to manoeuvre
Answers and explanations
Lookout: Two cones with apexes together identify a vessel engaged in fishing. Fishing here means gear that restricts manoeuvrability; the day shape does not distinguish trawling from other fishing.
The sound answer
Engaged in fishing
Two cones with apexes together identify a vessel engaged in fishing. Fishing here means gear that restricts manoeuvrability; the day shape does not distinguish trawling from other fishing.
Why the other options fall short
Not under command
Not under command uses ball, ball. The displayed signal here indicates engaged in fishing. Two cones with apexes together identify a vessel engaged in fishing. Fishing here means gear that restricts manoeuvrability; the day shape does not distinguish trawling from other fishing.
Restricted ability to manoeuvre
Restricted ability to manoeuvre uses ball, diamond, ball. The displayed signal here indicates engaged in fishing. Two cones with apexes together identify a vessel engaged in fishing. Fishing here means gear that restricts manoeuvrability; the day shape does not distinguish trawling from other fishing.
Rule 26 · Day shapes
Two cones with apexes together identify a vessel engaged in fishing. Fishing here means gear that restricts manoeuvrability; the day shape does not distinguish trawling from other fishing.