On Sun, 29 May 2016 06:14:17 -0700 (PDT), True North wrote:

Duh!
Offshore use is classified as 'B'

Some more Category C boats:

http://www.ybw.com/boats-for-sale/5617927?currency=GBP

http://www.ybw.com/boats-for-sale/5474159?currency=GBP

http://www.ybw.com/boats-for-sale/5652436?currency=GBP

http://www.ybw.com/boats-for-sale/5615871?currency=GBP

As you can tell, the 'C' category covers a wide range. I wouldn't be too quick to think your boat
had the same capacity or capability as those above.