Related Clues:

• Arctic Ocean sight
• 'Wozzeck' composer
• Arctic hazard
• Icy hazard
• Headache aid
• Titanic thwarter
• Navigation hazard
• Titanic's undoing
• Titanic problem
• Titanic problem?
• Big chip off the old block?
• Only about 10% of it is visible
• Helmsman's headache
• It may lead to cooler heads
• Titanic's problem