Related Clues:

• Underwater weapon
• WWII torpedo launcher
• German submarine
• WWII enemy sub
• "Das Boot" setting
• Lost Dutchman, for one
• Fly ball chaser's cry
• Do groundbreaking work?
• Cry from a selfish child
• Silver source
• 'Gimme!'
• WWII German sub
• Missile
• Lusitania's downfall
• "Gimme!"