The game does a great job of creating atmosphere using graphics, this part is ready for me, but the gameplay needs serious work.
The first thing that breaks the mood is the fact that I just don't want to kill the monsters, they are just doing their thing, not attacking me, in the middle of the ocean, and sometimes I feel them almost harmless because if you drive in circles they just don't hit you 99% of the time.
Visually, the fight conveys a lot of tension, but the gameplay and music during the fights don't.
My feeling is that battles go back to driving in circles and spamming harpoons, things like the boat’s position are "in a sense" almost irrelevant because you don’t have time to maneuver the boat to avoid some attacks and the best you can do is just moving the boat in circles and spamming harpoons, this dominant strategy detracts a lot for the fights, I feel that you have to implement some 'telegraphs' in the enemies attacks so the player could use the boat’s position more as a strategy element, would be nice if the player has more things to do, more things to juggle during fights.
Perhaps if you change the boat controls a bit or tweak monster attack speed, boat speed, this could add some more layers of strategy and decision for the player that would enrich the experience.
for example. in the first monster, the player has no idea where it will emerge again, so you don’t even try to maneuver the boat and use it as a strategy, the dominant strategy of going in circles is always the best option and that limits the game.
Input bug maybe: the movement of the mouse seems janky, especially at the port, sometimes the aim freezes for a few milliseconds and teleports to another random point.
I liked the game and I think it has great potential, but the gameplay could be improved. I wish you all the best and I'll keep an eye on the project, is really impressive what you could produce by yourself.