British yachtswoman Ellen
MacArthur has unveiled her new boat in Australia.
The 75ft trimaran will attempt to break solo speed sailing records, including the 24-hour and trans-Atlantic records.
MacArthur said the boat, named B&Q Castorama, was designed specifically for solo racing.
She said: "There aren't many boats that exist like her. She's designed to go across oceans very quickly with one person on board."
MacArthur became a star in the
yachting world after finishing second in the Vendee Globe
solo non-stop round-the-world race in 2001.
Her new boat, the three-hulled B&Q, has 100ft-high mast and was designed by France-based Nigel Irens and built in Somersby, which is 50 miles north of Sydney.
has been in Sydney for several months to test out the boat
while it was being finished.
She said: "We basically said, 'Forget the rule book, we want to
build the fastest boat, how are we going to do it?'"
The 27-year-old from Derbyshire said sailing the new boat was "powerful and not as
violent as sailing smaller boats".
She was launching the London Boat Show via a video link from Sydney on Thursday.
MacArthur's last record attempt, to set the fastest non-stop
circumnavigation of the globe last February failed when the mast on
Kingfisher 2 broke in the Southern Ocean.
She will sail the new trimaran to Auckland in New Zealand with
a crew this month and expects to set off for Cape Horn or
the Falkland Islands in early March.
The crew will disembark there and MacArthur will sail solo
back to Europe, possibly attempting the 24-hour distance record, which is currently held by Frenchman Laurent
Bourgnon set the record of 540
miles, average speed 33.75mph in 1994.
From June 2004 onwards MacArthur will be attempting the solo trans-Atlantic record which stands at seven days two hours (Bourgnon in 1994).
She is also considering a tilt at the solo round-the-world record of 93 days and three hours set by Michel Desjoyeaux when he won the Vendee Globe in 2001.