A few issues:
1. Satellite phone. Erm, NO, you wouldn't. Your ship just sunk, best guess, its not waterproof!
2. Rubbing sticks together. Actually you'd have a better chance hitting stones together.
3. Vaporize sea water. All you'd be left with is salt genius, its the water that evaporates, not the salt.
5. Attempt to kill it. Mabee, but how do you expect to do that when you left your knife on the boat?
6. Make a hammock. Same problem as 5.
7. Swipe it away with your hand. ARE YOU MENTAL?!?!? What you going to do if it bites you? Use a stick or something man!
The rest are fine and very logical. Apart from them it's good, better than what I could do anyway.