Alot of the time I skip AOB for stationary shots, just set it to 0 and it will go exactly where you aimed.
For speed I mark an X on the ships exact location, wait some time (I like 10min - 60min then mark another X on it's new position. Provided you are using GWX you should have a table that includes speed, time, distance somewhere on the map screen, take your ruler and draw a line from the amount of time you used, and drag it to the distance the ship traveled. If you follow the Ruler line you will see that speed is on the left/bottom line, whatever speed is along the line you drew is how fast the ship is moving.
ps, three missed because I forgot to adjust spread angle, the solution was still correct