Had to go downstairs to check mine out since it was built a few years ago. I didn't fill the seams, and the one next to the conning tower-bridge superstructure is just barely noticable, I couldn't even find the rear one, so yes, the fit is excellent. Filling the seams in my opinion would be difficult without screwing up the deck detail. The only thing this kit needs is a detail set , such as offered by Tom's Modelworks, to really bring it to life.