You searched for: “nautophobia
nautophobia (s) (noun), nautophobias (pl)
1. A trepidation of boats or ships: James never likes going to countries by vessel because of his nautophobia and his horror of sinking in the middle of the ocean!
2. A dread of water or of being on water: Ever so often sailors have nautophobia concerning their panic of drowning in the sea or ocean.