Puzzle..!!

Rope & Sea Water...

There is a boat floating on the waves of the sea. A rope is hanging from the boat towards the sea water. The rope is 6 inches above the sea water. If the water is rising 1.5 inches per hour , how long will it take the water to touch the rope ??? ( time allowed to solve this puzzle is 10 seconds ).
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Answer :

The water will never touch the rope because as the water will rise the boat will also rise.