My first patrol: what am I doing wrong?

[FredMSloniker]

Things I've learned so far in my efforts just to get to my first patrol in one piece:

• When the boat gets to the end of a plotted course, it turns the engines off. It does not attempt to stop the boat at the last waypoint. It doesn't attempt to stop at all; it just turns the engines off when it hits the waypoint. And subs slow down very slowly on their own. Which means I pulled into Midway to refuel, looked away for a few minutes, and crunch
• Indeed, there doesn't seem to be any good way to come to a full stop. I can reverse engines and get close to a full stop, but I still drift for a good long time. Maybe if I put the boat into a tight turn? Or is there an anchor button I'm missing, silly as that sounds?
• I shouldn't rely on the game to step down time acceleration when I'm close to land in general. Not only does it tend not to do so, getting close to a harbor will lag the game at high accelerations, making it difficult to manually turn them off.

Maybe in the next few days I can actually get to the point of shooting something!