She was built in 1991 in Sweden with the intention to take part in the Discovery Race which would be held in the autumn of 1992, in which the participants attempted to set a new speed record for crossing the Atlantic.
The Swedish yacht BIG T a participant in the race did have a tonnage of 14 ton with dim. 23.5 x 5.85 x 4.2m.
Could not find much more on the yacht or on the Discovery Race, all info welcome.
Sweden 1992 4.50Kr. sg1630, scott1948.
Source: Sweden Post Bulletin 2/92. Watercraft Philately.