Ahh I see, thank you.
So something like a Corvette, which was mass produced and thrown together pretty quickly would fall under the Frigate class?
On an unrelated note... I was talking to one of the key designers of the Daring class. He told me of the inaccuracies in building the Hunt classes (you guys will know so, so much more than me on this) namely putting the height of the top deck above the keel ant the figure for the lower deck, making them top heavy. This was due to staff shortages and only one member of staff to check measurements, so no cross checking occured.
Something I never knew anyway!!
After the things he's told me, i'm almost reluctant to sink the virtual counterpart