It took me a while but I finally figured out the concept and realized this game has a lot of potential. The idea of frantically running around to control your ship while shoveling coal and beating the controls back and forth to navigate the ice field could really go a long way.
My best advice is to add a more in depth tutorial, even some screenshots of the different mechanics like shoveling coal to heat up the engine, hitting the controls to steer, and how your actions effect the ship on the map. (I didn't even notice the map was showing the ship I was in for about 10 minutes)
This game has a lot of potential and I really hope you take it further than the jam, it would be perfect as a multiplayer game too. I'm just worried people might not take too much time to play and realize how fun this game can be because its pretty confusing starting out.