Related Clues:

• Ice mass, for short
• Moving ice
• Titanic sinker
• I see, as you say, bird flying over calf, perhaps
• Floating sea hazard
• Floating piece from glacier
• What Titanic hit
• One cold bird climbing arctic feature
• One's tipped as having hidden depths
• One church composer is an unemotional person
• In short, it's the main danger
• Big screen endlessly broadcast last scene of Titanic
• I caught bird that's picked up a sort of lettuce
• One destroyed Titanic
• Lettuce shunned by sailors?