Shelley Whelan of NS, CAN  wrote with specs and other information on the Bluejacket.  He quotes from an old sailboat directory:

"A high performance Cuthbertson designed week-ender day-sail or keel boat.

Bluejacket offers week-ending for two people with head cushions and dodger (optional) or comfortable day sailing in her large cockpit. She has positive floatation for safety. I deal as a club class boat."

THANKS to Shelly on finding some information on this boat!