Nautilist

Having grown accustomed to the ocean and its many traps and secrets, you are somebody that can read the sea's bitter temper and weather its incredible power.
>Gain Proficiency with Cartographer's Tools
>Gain Proficiency with 3 Waterborne Vehicles as well as Rowboats
>You may, by making a successful Intelligence Check, determine what the weather will be like over the next 24 hours over open sea. You apply your Proficiency Modifier to this check.
>You have Advantage on checks when avoiding crashing ships, navigating through perilous areas (reefs, rapids, etc), avoiding capsizing, and when attempting to recall knowledge relating to boats or fleets.