Ledgend of Zelda Phantom Hourglass

Um having trouble boating to the island which holds the second temple. I keep getting lost in the fog... and then the fary says something about following the ghost ship... what do i do? ???

First, go to Molida Island ( Southwestern chart) and go to the house that is closest to the right side of the map. Talk to the guy and he will let you go into a cave. Um figure the rest out yourself so i don't spoil the game