What is the name of this movie?

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Group of friends on evil island
Something starts killing them
One is killed,his head is cut and put on a revolving cd player.
One is trapped in fish tank
Aman is tied to a a rod in the sea
Tensioned by a rope connected to a moving yacht, his bottom half is separated and falls down water meanwhile the top haf still alive

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Club Dread (2004)

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Thank you very much