Looks a little like Iceland?

 

Considering scoring coastline as follows:-

Putting a ship on a coast claims it. You score one for every hex on the coast at game end. If an opponents ship is on the same coast it gets the points for every hex on the coast up to but not including the hex occupied by the other ship. So if 2 ships from different players occupy a coastline the both get the points for the coastline between their locations and each get points for the hexes on the other side of their locations.

Fjords effectively score 2 points as they go in and out of the fjord. Ideally, you want your ship at the mouth of the fjord when it is 'finished'.

Lakes can be 'finished' and score 1 point per hex in it - with the ship returning to the pool.

Ships can be moved to any coastal hex contiguously connected by coastline to their current location but cannot 'jump over' a ship of another player.