Geoff/Mervyn, Super Seal 118 is a 27 not 26. So perhaps the question should be posted in the 27 area too. I have the brochure for the Parker Super Seal 27 (as he named the few early ones, 113 onwards, before changing to just Parker 27). It states the folowing,
Length overall 27ft
Length waterline 24ft
Beam 9ft 3in
Draft Keel up 1ft 3in
Draft Keel Down 5ft 3in
Displacement 5000lbs
Ballast Ratio 45%
Sail Areas
Main 156 sq ft
Genoa 1 250 sq ft
Genoa 2 206 sq ft
Spinnaker 560 sq ft
Sorry about the old measurements but that is all that is quoted.
If you have to supply P I J etc rig measurements then I suggest that you measure them yourself as changes to rig over the years may have been made (headsail roller furling drum height and boom height/length were sometimes changed). Also if you are getting a full rating it is worth having your boat officially weighed. Ratings are very sensitive to weight and most old boat's 'normal' sailing weights are much more than the manufacturer's quoted displacement.
Chris.