Print settings:
Everything is printable at 0,2mm layer height and 15% infill.
Supports aren't needed.
I recommend printing this model with multiple colors. You can use my TitanicWreckage_part2_multicolor file for that.
Assembly:
Glue the parts together with superglue.
The author remixed this model.
I 3D modeled a rock that the wreckage of the Titanic can be secured in. I also added a multicolor 3mf file.