The situation is that the program wants to convoy the oil resource out of Port of Spain, Trinidad to London through the 5 sea areas shown. What didn't make sense was the initial leg from the Mouths of the Amazon to Cape Verde to the Central Atlantic. I thought, hey, I'll save a CP and manually change the route so it goes from the Mouths of the Amazon to the Central Atlantic directly. However, every time so far that I've made this change, hit recompute and (possibly) made some other change the route reverts back to including Cape Verde.

