is there anyway of getting up there, i saved then checked it out but it says not meant to gain access. and what about the nearby switch thats fixed, and near gate, anyone open this one. seems lame to spend the time picking a lock, defeating a guard and no pay off. also any way to get to the chests that the 2 smiths have?

Port Kuudad tower is only available in a player modified scenario:
http://www.basiliskgames.com/forums/viewtopic.php?f=12&t=5449

I think it was intended for additional material that was never created.

The two Smith's chests behind the gates aren't accessible.

If you look at the entities list for Book II you will find Chancellor Pylot who isn't in the game. Most likely you would of found him inside the inaccessible tower, but what purpose would he of served?

I did try using a drop entity script to try and make him appear to see just how far they had got with him but it didn't work so I guess there is nothing beyond his name on the list