The handbook gives figures for the Parker built 27 as follows :
Tri Radial spinnaker = 605 F.S.
Cruising Chute = 435 F.S.
There are quite a few detailed differences in design between the culmination of the 27 and the 26 so the earlier spinnakers may have varied somewhat,as did the mainsail area which Baker gave as 156 F.S. and Parker 172 F.S.