Thanks for playing <3
The boats do stop at the lighthouse the tiny little rocks & islands around it are a minefield though xd.
Also make sure your boat is at a standstill and not selected when entering a building else it could drift away a bit.
The game should always let you know the next step after each quest item, if you have suggestions on new / extra lines & story points let me know. :)
Try buying a 2nd boat soon, this can prevent an early game-over and will make the game go exponentially faster! :D
Looking forward to see you beat the game and secure a place on the leaderboard. <3