In a gruelling stroke-by-stroke effort, Mr Quincey took nearly two months to row the 2200km from Australia to New Zealand.
He battled huge swells, sleep deprivation and the kind of loneliness only someone alone on the ocean could ever fathom.
Of the 54 days rowing, 34 were spent travelling backwards, as he battled the strong ocean currents in his boat, Tasman Trespasser II.
"Looking back, it's amazing the kind of risky situations I found myself in. It was an incredibly hard slog - a painstaking effort where you just focus on each stroke," he said.
The hard slog, however, did provide him with some shining moments.
"When you're rowing, you're not always able to see what's coming up. Once I rowed straight into a sperm whale, which was just basking on the surface.
"It was amazing the kind of sea life it [the rowboat] seemed to attract. Birds, dolphins; they become your companions when you're out there alone," he said.
Mr Quincey became the second man to row across the Tasman Sea when he made landfall at Ninety Mile Beach in March - 33 years after his father, Colin Quincey, became the first to achieve the feat.
It took Quincey senior 63 days to travel from the Hokianga Harbour, in Northland, to Marcus Beach, on Australia's Gold Coast, and Shaun says sharing such an incredible experience with his father is unique.
"I always had a desire to equal Dad's effort and I'm so fortunate to be able to share that with him. It's a massive part of our relationship. No-one else in the world has done what we have."
The Auckland-based former surf lifesaver is touring the country with his rowboat to promote his book Tasman Trespasser II: The Shaun Quincey Story.
During a visit to the Wanaka lakefront this week, before a school speaking engagement and a book-signing session, Mr Quincey and Tasman Trespasser were an attraction to curious passersby - many of whom stopped to offer words of encouragement and congratulations.
Mr Quincey's new mission is to encourage others to set their own personal challenges, whatever they might be.
"New Zealanders have always celebrated people who take on challenges - getting excited about adventures and stuck in and doing things.
"If you set yourself those challenges, the personal experiences are so enriching," Mr Quincey said.
He also visited Queenstown and Alexandra and would be driving through Dunedin, towing his rowboat, tomorrow afternoon.
