A simple question I think. And it might fall into the dumb question category. I've read some articles and looked at the prints. The obvious answer would be yes but its not entirely clear to me. Is the tank top deck the actual caps to the ballast and other tanks? Or is there a space between the deck and the tanks? I was wondering that because I was thinking how they did repairs/maintenance on the equipment mounted to the deck such as pumps ect. As in if they had to access the underside of the deck to get to bolts...ect. Or did they just crawl into the tanks to get get to stuff? Mr Halperns article below is a really good read on the deck but if the answer is in there I missed it. Read it twice. Anyway was curious about it.