| Answer | Crossword Clue |
|---|---|
| MACH | Unit of speed of sound. |
| MACH | Unit for speed of sound. |
| MACH | Unit in measuring speed of sound. |
| MACH | Sound speed unit |
| KNOT | Unit of speed |
| VELO | Unit of speed. |
| KNOT | Unit of speed. |
| BAUD | Unit of speed |
| KNOT | Nautical unit of speed |
| VELO | Proposed unit of speed. |
| KNOT | Unit of ocean speed. |
| KNOT | Mariner's unit of speed |
| BAUD | Unit of speed, in telegraphy. |
| KNOT | Unit of speed at sea |
