Brendan O'Shannassay grew up in Fremantle, Australia, and gained his degree and officer education with the Royal Australian Navy. In 2001 he joined his first superyacht as a deck hand, and worked his way up through the ranks to gain his first captaincy in 2006. His yacht racing career has also seen him participate in multiple Sydney Hobarts and the Fastnet Race, amongst others,

Brendan is a Board Member of the International Superyacht Society, Chairman of the Captain's Committee, and has helped to establish superyachtcrewhelp.org - a charity working to support the mental health of yacht crews.

Superyacht Captain is his first book.