| Answer | Crossword Clue |
|---|---|
| iceboat | boat for breaking a navigable channel through ice; icebreaker |
| iceboats | boat for breaking a navigable channel through ice; icebreaker |
| icebreaker | A ship designed for breaking a channel through ice |
| icebreakers | A ship designed for breaking a channel through ice |
| icebreakers | ICEBREAKER, a boat for making a passage through ice |
