| Answer | Crossword Clue |
|---|---|
| SOS | Ship emergency letters |
| LIFEBOATDRILL | Emergency exercise on a cruise ship |
| SOS | Emergency letters |
| SOS | Emergency letters at sea |
| USS | Ship letters |
| USS | Some ship letters |
| USS | Naval-ship letters |
| USS | Navy ship letters |
| HMS | Letters in ship names |
| USS | Letters on a ship. |
| ORP | Letters on a Polish ship |
| MAILCLIPPER | Ship used to transport letters? |
| USS | Letters on an American ship |
