The ship is massive and it has several areas. There's also known graphical bug where the ship's deck fails to load the texture (PS4). Though this is not gamebreaking, it will be difficult to find the doorways and items on the floor. This can be fixed by saving and reloading your game, or fast-traveling to the same location again.
The location has around 15 different type of trappers, including the trapper leader, Bilge. He's wearing a Raider Power Armor though you can forcibly eject him from the armor by shooting his fusion core. This will make him significantly vulnerable and easier to kill. Clearing the ship of trappers is part of the quest Hull Breach 2.
Outer shacks (ship entrance)
Ammo box and crate in one of the outer shacks
Top deck
Interior Hull
Cargo Platform
No significant loot.
Dumpster Platform