The self-described "recluse" plans to spend his days swimming, philosophizing and reading more than 400 books, which weigh around 100 kilograms.
"On land, people are watching TV, driving cars in traffic, smoking, drinking -- it's not healthy," Yrvind explained.
"Out at sea it's a cleaner environment -- mentally and physically. When I come back I will be a healthier, younger person. This will prolong my life, not the other way around."
Growing up on the small Swedish island of Branno in the North Sea, Yrvind quickly learned to sail in an area so remote he needed to cross water simply to buy a loaf of bread from the shop.
In his 50-year career building boats, Yrvind has been lavished with awards from around the world. In 1980 he received a Seamanship Medal from the Royal Cruising Club in Britain for single-handedly sailing a six meter boat around the stormy waters of Cape Horn, Chile.
Eight years later he was inducted into the Museum of Yachting's Hall of Fame, based in Newport, Rhode Island, for his many single-handed expeditions.
The museum also has one of Yrvind's boats on permanent display -- a six meter yacht he built in his mother's basement and sailed from Sweden to Newport in 1983.
In 1989 Yrvind also built and sailed a 4.5 meter boat from France to Newfoundland, now on display at the Swedish National Maritime Museum in Stockholm.
And the sprightly septuagenarian is no closer to slowing down -- last year sailing a tiny 4.5 meter-long boat from Ireland to the Caribbean.
Yrvind, who is also on the look-out for sponsorship, hopes his boat will not simply break the record books, but pave the way for a new environmentally-friendly design for living.
"We are on Earth living beyond our resources -- oil is running out, fossil fuels are running out, water is running out," he said.
"If I can show I can live on a boat 10 foot-long for more than a year, with all the food I need with me, I think it might benefit mankind."
For a man who "loves all things small," should he accomplish the feat it would be a huge achievement in the history of sailing.