| Answer | Crossword Clue |
|---|---|
| UBOAT | Wartime sea menace |
| UBOAT | Wartime menace. |
| MINE | Wartime sea hazard |
| dimout | reduction or concealment of night lighting in wartime to make the source less visible to an enemy from the air or sea |
| dimouts | reduction or concealment of night lighting in wartime to make the source less visible to an enemy from the air or sea |
| dim | (in wartime) to reduce the night illumination of (a city, ship, etc.) to make it less visible from the air or sea, as a protection from enemy aircraft or ships |
