Possible Clues:

• Deliberately sank a ship
• Scurried like a crab
• Deliberately sunk
• Don't see too much, so as to keep it clean
• Of ship, sank deliberately
• Ran away and did the sinking
• Hurried - sank
• Ruined - caused to sink
• Sank ship by letting water in
• Hurried away ignominiously or sank a ship