Wow. Compared to the amount of fuss I had to do to get water to work with me before this feels like a total breeze.
https://cdn.discordapp.com/attachments/317162246398803968/367742888735670284/unknown.pngThis is an example of the second method suggested by Larian_KV, and at first it looked like there was an issue due to the ship having a "gap" between the bow and the water, but when I check it in-game the problem solved itself. Now I can finally get back to making the map!