UPDATE - PROBLEM SOLVED !!!

I can not get to open the secret door in Tidewater Caverns to get Map to Evermorn Island.

Is there something I'm missing? I visited Tidewater Caverns before taking the priest quest, then I took took the quest and came back. I wasnt able to open the secret door to the secret passage, so I simply jumped off the ship and opened the secret passage from the other end. Maybe it is some lever or something? I'm stuck and quite furious atm. Please, any suggestion is welcomed.

Are you sure you are "on the right level". I had problems finding it too, until I went to the spot/above or below were I was searching and bam, door opened. But I don't know anymore were it was, but I had t switch the decks on that ship...

Here is a map, that might help:

http://mikesrpgcenter.com/mm7/maps/tidewatercaverns.html

Edit: I got the map before I got the quest... I think

Lol, I completelly forgot about this post. Thx for the info, I knew mikesrpgcenter.com and I'm still using it.
I was simply at the wrong level of the ship and at the wrong part of a wall :p