they don't look like safes though.... the engines, well they look like engines, the hull fragments are big plates of metal, and the bridge fragments look like consoles and steering yokes (and a platform)
Currently on the Xbox go to the Aurora (you need to wear a Radiation-proof suit, helmet, and gloves if not in creative or if you didn't fix the Aurora yet) and along the sides of the ship there tends to be many duplicates of the fragments. I've found them typically on little pieces of land along the ship, but watch out because there are sand sharks all over.
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Currently on the Xbox go to the Aurora (you need to wear a Radiation-proof suit, helmet, and gloves if not in creative or if you didn't fix the Aurora yet) and along the sides of the ship there tends to be many duplicates of the fragments. I've found them typically on little pieces of land along the ship, but watch out because there are sand sharks all over.