Observe and identify
Advanced level, about 2 min. International COLREGs / IRPCS.
The situation
In restricted visibility a large vessel sounds a complete bell-and-gong sequence. Identify its meaning.
What can you conclude from the signal in these circumstances?
- An aground vessel at least 100 m long
- An anchored vessel at least 100 m long
- A manned vessel being towed
Answers and explanations
Lookout: Use the situation as well as the sound. Listen to the full sequence before deciding.
The sound answer
An aground vessel at least 100 m long
An aground vessel at least 100 m long. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. The aground bell sequence includes the required aft gong after the bell ringing.
Why the other options fall short
An anchored vessel at least 100 m long
An aground vessel at least 100 m long. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. The aground bell sequence includes the required aft gong after the bell ringing.
A manned vessel being towed
An aground vessel at least 100 m long. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. The aground bell sequence includes the required aft gong after the bell ringing.
Rule 35(g), (h) · Aground: bell and gong
An aground vessel at least 100 m long. In or near restricted visibility, by day or night. The signal gives operating information; it does not establish a stand-on vessel. The aground bell sequence includes the required aft gong after the bell ringing.