500 Days: Around the World on a 12 Foot Yacht Kindle Edition|by Serge Testa (Author) Format: Kindle Edition|Alone aboard "Acrohc", the tiny yacht he designed and built, Serge Testa sailed around the world and into the Guinness Book of Records. Exotic landfalls, cyclones, encounters with whales and a nearly fatal fire at sea make this a gripping story. Told with understatement and humor, this account of a unique voyage of discovery and endurance appeals to the adventurer in all of us.