SOS
E314300
UNEXPLORED
SOS is an internationally recognized Morse code distress signal used by ships and aircraft to indicate extreme emergency and request immediate assistance.
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
RMS Titanic
→
|
distressSignalUsed |
|
Somali shilling
→
|
ISO4217Code |