Just to be sure ... do you hold W pressed? Boats there are slow to speed up.
That is what it was, I wasn't holding the W down long enough. It just seemed like an unusually long time for anything to happen. Thanks for your help.
Actually I have to partially take that back, it seems to work intermittently when I use the USS Arleigh Burke, the DDG-51 ship, if I pause Anteworld and unpause it, I will hold the W key for a while and nothing will happen. If I restart Anteworld it works again. The coast guard ship doesn't seem to have a problem. Anyway, no big deal, thanks again.