Jester is the name of a modified Norwegian Folkboat sailed by the famous circumnavigator Herbert 'Blondie' Hasler

Herbert Hasler

Lieutenant-Colonel Herbert George "Blondie" Hasler, DSO, OBE was a distinguished Royal Marines officer in World War II, responsible for many of the concepts which ultimately led to the post-war formation of the Special Boat Service...

, notably coming second to Francis Chichester

Francis Chichester

Sir Francis Charles Chichester KBE , aviator and sailor, was knighted by Queen Elizabeth II for becoming the first person to sail single-handed around the world by the clipper route, and the fastest circumnavigator, in nine months and one day overall.-Early life:Chichester was born in Barnstaple,...

 in the 1960 OSTAR, completing the voyage in 48 days.

Jester was rigged with Chinese-style junk

Junk (ship)

A junk is an ancient Chinese sailing vessel design still in use today. Junks were developed during the Han Dynasty and were used as sea-going vessels as early as the 2nd century AD. They evolved in the later dynasties, and were used throughout Asia for extensive ocean voyages...

sails, a rig with the reported advantage of being easier for a singlehanded sailor to manage. Hasler subsequently wrote Practical Junk Rig, a treatise on modern junk rigging of sailboats.