Thank you for making it. Bug found. I used a long purple line to connect all triangles except the new one at the bottom. I tried to add that new triangle onto the spline. poof, the spline is gone, the 5 purple boats are stranded on the ocean. Also, I edited a land route (canal) just before the upgrade splash screen, and then that route was lost. Had to wait until there's another canal and I rebuilt the blue line.
Thank you for playing and taking the time to give feedback!! I made the game in a week as part of a challenge and the disapearing line is one of the things I couldn’t fix directly. If you click the purple circle on the right you can delete the line so you can draw it again, and picking up boats and dropping them on an empty space returns them to the “inventory” so you can place them again. For the canal bug i don’t know what could cause that, i will look into it tomorrow. Thanks again!!