Octopath Traveler 2 - Final Sailing Sequence

We return to the high seas one more time to get the rest of the business here out of the way. This means we will get the EXP boosting item, get the spare parts from the lighthouse for the side quest on land, and find any other pieces of loot that are to be had. This does include returning to Osvald's prison and looting the new NPCs there, but that very much is an optional area unless you're achievement hunting, and I would not recommend making the trip at all.