I was planning on doing a waterline ship this year, and I can choose one that will fit on this GB:
1:700 Fujimi/SeaWay Model Deutschland/Lutzow.
The pocket battleship Deutschland saw action in the Spanish Civil war, then got updated and renamed Lutzow, as well as reclassified as a heavy cruiser. Was right behind the Blucher in the Battle of Drobal Sound; same fortress guns who sank Blucher heavily damaged Lutzow, who had to go back for repairs/refit.
The kit (and mold) is old, not much detail but I can dress it up a bit with generic WW2 Kriegsmarine PE ladders and such. Lutzow had a funky camo pattern, but was not applied until after the Norway campaing, so "gray and underway" will be the paint scheme.
http://en.wikipedia.org/wiki/German_pocket_battleship_Deutschland
I should be able to start in late Spring, once I clear out some other GBs in progress.
Cheers