How can it be 2cm smaller? Makes no sense to me. Unless it really is. I wonder if that's a redesign as well.
Just checked one of my 3940's (masts, bowsprite, etc not installed) and it measures about 22 - 23 cm in width across the widest part of the deck (gun-hatches not deployed sideways).
So maybe the original measurements in the older catalogues weren't correct, and they've updated them...
Or maybe the sails are less wide on the 5135.
Now I'm gonna quit with "5135-investigations"... at least for a while.