| Answer | Crossword Clue |
|---|---|
| SONAR | Fathometer, basically |
| fathometers | FATHOMETER, an instrument for measuring underwater depth using sound |
| Answer | Crossword Clue |
|---|---|
| SONAR | Fathometer, basically |
| fathometers | FATHOMETER, an instrument for measuring underwater depth using sound |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.