Possible Clues:

• Naval vessel
• Logic game with clickable cells
• Certain marine vessel
• Ship which detects explosives
• The one I have is not really big enough for each warship
• Ship that blows up destroyers at anchor?
• Ship that stops some undesirable types going off
• Colliery brush used to clear explosives
• Popular computer logic/guessing game
• One removing bombs digs with blade ups and runs