Just recieved an email from Greenline boats which included boat ratings that i thought may be of interest to you all..Now i wonder which tating applies to Hordhavn and KK vessels. My guess is B
Categories is the best term. These are European design categories. Here is a link to some recent information.
Technical
The important thing is to remember they are not ratings of any specific completed boat but of the design of a model.
All current KK's are available as CE Category A Ocean for EU Import. So that's not automatic. I don't know what changes or adjustments they make for that category.
I imagine Nordhavn is similar if they choose to build to Category A.
Now older ones may well not be categorized if they're in the US. I would however think more Nordhavn's and KK's in the size ranges you're talking about would be for all practical purposes equivalent to Category A. There may be certain features that wouldn't meet it, but I'd think the basic hull and structure would.
The vast majority of boats under 50' are Category B with a few A's and a few B's. A Beneteau ST 50 is Category B for 14 people and C for 18 people. So that shows you the impact of load. A ST 44 is B for 12 people and C for 14. A ST 34 is B for 8, C for 10, D for 11. A ST 30 is B for 8 and not certified for any other number of people.
There are quite a few boats in the 50' to 75' range that are only Category B.