Quote Originally Posted by RojGardoth View Post
I got one of the Colossus Slabs early on after I upgraded my then newly level 20 sub. It's all Unkai parts now. The Shark parts are now on sub #2. I've gotten one of the slabs and one jelly minion in about 6 runs so far. Never got anything useful with Shark parts while leveling sub #1 so will likely swap out all the parts again when the second sub hits 20.
The shark parts have 30 surveillance total which is why you don't get anything good leveling up with them. Just replacing the hull and the stern with Unkiu parts brings that up to 100.