Ocean Liner by Swiss. Ocean Liner Vehicle Version for Cities Skylines. Steam Workshop Link.
If you get a bug where the ship ight disapear when trying to dock or leave the port, place a 2nd Port close to the first one, that for some odd reason seams to fix the issue.
I tried very long and hard to find the reason for this wierd bug, but i coud not find it. The solution however worked for me all the time.
-detailed Model (still perforance friendly thogh) -3656tris
-custom LOD 808 tris
-pool on deck 😀
File Details:1,4 MB / ZIP Download Cities:Skylines – Ocean Liner Vehicle Version - Modsup.com