I belive you can find it if you go west, then you go again west to small alley were you can move west yet again to reach port. There is a door which lets you into the place were you can fish inside and there you can get fuse from one of the lamp thing.
If you go west and to the warehouse where all the generators are in the water and theres a fishing spot inside, one of the light posts is off and that is where the fuse is
