Related Clues:

• Marine menace
• Underwater missile
• ''Das Boot'' sub
• War vessel
• WWII menace
• W.W. II danger
• Lusitania's attacker
• The Lusitania's undoer
• WWI vessel
• Lusitania sinker
• Wolf-pack member
• WWII predator
• Cigar-shaped ammo
• One in search of a tin can
• WWII vessel