| Answer | Crossword Clue |
|---|---|
| SONAR | Device for locating underwater objects. |
| sonar | an underwater locating device |
| sonars | SONAR, an underwater locating device |
| asdic | sonar (an underwater locating device) |
| asdics | ASDIC, sonar (an underwater locating device) |
| sofar | a system for locating underwater explosions |
| sofars | SOFAR, a system for locating underwater explosions |
