Observe and identify
Developing level, about 2 min. International COLREGs / IRPCS.
The situation
In fog a vessel gives her normal operating signal, then this additional signal. Listen to the supplement.
What can you conclude from the signal in these circumstances?
- A pilot vessel engaged on pilotage duty identifies herself
- An anchored vessel warns of her position
- A towing vessel identifies the last manned tow
Answers and explanations
Lookout: Use the situation as well as the sound. Listen to the full sequence before deciding.
The sound answer
A pilot vessel engaged on pilotage duty identifies herself
Pilot vessel engaged on pilotage duty. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. An optional supplement to the applicable making-way, stopped or anchor signal; not its replacement.
Why the other options fall short
An anchored vessel warns of her position
Pilot vessel engaged on pilotage duty. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. An optional supplement to the applicable making-way, stopped or anchor signal; not its replacement.
A towing vessel identifies the last manned tow
Pilot vessel engaged on pilotage duty. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. An optional supplement to the applicable making-way, stopped or anchor signal; not its replacement.
Rule 35(k) · Pilot identity supplement
Pilot vessel engaged on pilotage duty. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. An optional supplement to the applicable making-way, stopped or anchor signal; not its replacement.