Does anyone know how to beat the very end of the poseidon level?

that level is hard but if i am thinking of the same level all you have to do is get onto the submarine using your q-claw. There is a yellow circle thing to use your q-claw on,on the left side of the submarine.

I NEED HELP WITH THIS LEVEL -- Does anyone know? What submarine? I don't see one. In the poseidon level - in the room where you raise the temperature and stuff, you go down the stairs and kill some guards. Then you see the big thing in the center with the clones. (This room has the auto-guns and the blue lasers in the floor.) After you go to the middle room with the computers, you pick up a card? What do you do with this?? How do you get out of that room? Your mission is to board the submarine to escape, but where the heck is it??????????

Thanks

go around and change the temps and stuff at all three stations. Use your decoder at the door to change it. Should be green when you are ready.

u just get on the boat its as easy as that