No, it isn't. AFAIK the smallest boat to circumnavigate was 17' and it's
been done in an open 19' boat. The issue is partly the stores load, and
partly the ability to make distance good in a wide variety of weather.

Sorry...
Record is 13' 8" L.O.A.
And that was 12' boat plus 1'8" bowsprit...
http://www.smallsailboats.co.uk/ding...files/serg.htm