Has anyone looked at swapping whale parts yet? It looks like adding a whale stern is an overall improvement.
Uniku Hull, Whale, Stern, Shark bow, Shark Bridge
Surv 100
Retrieval 90
Speed 30
Range 115
Favor 65

It gives 10 less favor and 30 less speed in exchange for 20 more retrieval and 15 more range. Speed doesn't really matter to me but retrieval seems to make a huge difference in what I get each voyage.