| Answer | Crossword Clue |
|---|---|
| SONAR | Location device for submarines. |
| SNORKEL | Device for submarines. |
| SONAR | Echo device for locating submarines. |
| SONAR | Sounding device used in submarines. |
| SONAR | Underwater location device |
| DME | Plane location device: Abbr. |
| ORANGEFINDER | Fruit picker's location device? |
