All I remember of the third one is that there was an awesome Pirate musical lynching scene...and I vaguely remember Elizabeth dressed like one of the bad guys in Platoon.
they build up to this EPIC final battle between ships that never happens. The pirates gather around for a war that Never happens
AT the end is just one ship against another, and a whole hour of build up for absolutely nothing.
it sucked. (plus getting rid of the Kraken between movies... wtf were they thinking?