Related Clues:
- Big piece of ice
- Huge floating ice mass
- Big ice chunk
- Iceberg kin
- Polar bear's hangout
- Frozen chunk
- Frozen sheet in the sea
- Northern sea sight
- Threat to a liner
- Flat mass of sea ice
- Frozen piece of Arctic lake captured by enemy
- Arctic ice chunk
- Enemy crossing lake ice
- Ice chunk in the sea
- Hazard smaller than a 7 Down