Observe and identify
Developing level, about 2 min. International COLREGs / IRPCS.
The situation
In fog listen to the distinct strokes and ringing of a vessel nearby. What state do they communicate?
What can you conclude from the signal in these circumstances?
- A vessel aground
- A vessel at anchor
- A vessel operating astern propulsion
Answers and explanations
Lookout: Use the situation as well as the sound. Listen to the full sequence before deciding.
The sound answer
A vessel aground
A vessel aground. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. Three distinct bell strokes before and after rapid ringing. Length-dependent alternatives still apply.
Why the other options fall short
A vessel at anchor
A vessel aground. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. Three distinct bell strokes before and after rapid ringing. Length-dependent alternatives still apply.
A vessel operating astern propulsion
A vessel aground. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. Three distinct bell strokes before and after rapid ringing. Length-dependent alternatives still apply.
Rule 35(h), (i), (j) · Aground: strokes and ringing
A vessel aground. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. Three distinct bell strokes before and after rapid ringing. Length-dependent alternatives still apply.