@Jaimis Looking the the shipwrecked set I have and you can view it in the vanity tab even if you don't have it, just put shipwrecked in the search box.
It has hidden:-
Shoulders
Bracer
Chest (females have a bra, not bare chest for obvious reason)
Belt (I think is hidden)
Appear, but transmogged:-
Gloves
Shoes
Legs (ragged loin cloth shorts)
No helmet, but can hide helmet in game options anyway.
That's the best way I can describe it.