SVNs are more useful than the normal version as they are more advanced. Whatever updates his version has, I'm not sure, and it's probably insignificant as this map does work in the current version.
A couple things: First off, I spawned on the top of one of the cranes. From there, the edge of the water is painfully obvious as it is blue-on-black. Also, the streetlights used a lighting texture that wasn't tiled properly so it looks weird. And, at least one of the streetlights used a different light texture than the others.
Besides that, the gameplay should be okay.. Personally I don't like teleports beside arrows because it's still random when you do teleport off them, and the map's based in a realistic setting which is lost quickly from things like that.
In all, good map. It looks pretty realistic, and I've not really seen this theme used before. I agree, some parts are not detailed enough (like the ship) but there's not a lot you can do to make things like the boxes more detailed honestly..
4/5. I think the cranes will make the map a sniper's heaven like akro.