Observe and identify
Foundation level, about 2 min. International COLREGs / IRPCS.
The situation
A vessel nearby sends this Morse group. Listen to the whole group; Morse dots and dashes use their own timing.
What can you conclude from the signal in these circumstances?
- SOS: distress and need of assistance
- International overtaking agreement
- 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
SOS: distress and need of assistance
Distress and need of assistance. The Morse SOS group can use any signalling method. Here a 0.3-second Morse unit gives dots and three-unit dashes; these are not Rule 32 short/prolonged whistle blasts.
Why the other options fall short
International overtaking agreement
Distress and need of assistance. The Morse SOS group can use any signalling method. Here a 0.3-second Morse unit gives dots and three-unit dashes; these are not Rule 32 short/prolonged whistle blasts.
Operating astern propulsion
Distress and need of assistance. The Morse SOS group can use any signalling method. Here a 0.3-second Morse unit gives dots and three-unit dashes; these are not Rule 32 short/prolonged whistle blasts.
Rule 37, Annex IV 1(d) · SOS in Morse
Distress and need of assistance. The Morse SOS group can use any signalling method. Here a 0.3-second Morse unit gives dots and three-unit dashes; these are not Rule 32 short/prolonged whistle blasts.