Observe and identify
Developing level, about 2 min. International COLREGs / IRPCS.
The situation
In fog you hear a towing vessel, followed by another source sounding a different sequence. Listen to the second signal.
What can you conclude from the signal in these circumstances?
- The manned tow, or last manned vessel of the tow
- The towing vessel itself
- A power-driven vessel stopped and making no way
Answers and explanations
Lookout: Use the situation as well as the sound. Listen to the full sequence before deciding.
The sound answer
The manned tow, or last manned vessel of the tow
The manned tow, or last manned vessel of a tow. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. When practicable, follows immediately after the towing vessel’s signal.
Why the other options fall short
The towing vessel itself
The manned tow, or last manned vessel of a tow. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. When practicable, follows immediately after the towing vessel’s signal.
A power-driven vessel stopped and making no way
The manned tow, or last manned vessel of a tow. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. When practicable, follows immediately after the towing vessel’s signal.
Rule 35(e) · Manned vessel being towed
The manned tow, or last manned vessel of a tow. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. When practicable, follows immediately after the towing vessel’s signal.