TAMAR rower Oliver Cook has set two "unofficial" world records in the past month without putting his oars in the water.
The 18-year-old Launceston Church Grammar School student rowed 8453 metres in 30 minutes on an ergometer machine at the end of August which, according to the company that makes the machine, constitutes a world record for the 13 to 18-year-old lightweight category.
He then repeated the feat last week beating his previous mark at his next attempt in notching up 8513m.
Cook completed the records at the Tamar Rowing Club as part of his Rowing Australia-Rowing Tasmania testing protocols.
"I got a certificate from the company saying my result was a world record," Cook said.
"I didn't realise the first time that I'd got it because I was just trying to aim for quite a high score for my TIS scholarship application and I found out afterwards."
Coached by Tamar's Ron Woods, Cook was the state under-19 single scull champion last year and represented Tasmania in the under-21 team at the 2012 Youth Cup.
He said his aim was to continue to improve with the goal of achieving under-23 Australian selection within the next year as a lightweight sculler.
Woods said Cook's ergometer world records came as a bit of a surprise.
"He's a bit of an individual and enjoys his single scull," Woods said.
"At this stage of his training it was a little bit unexpected because he has been doing some long endurance work which hasn't got a speed component to it. "
Woods said Cook idolised fellow Tamar rowers Blair Tunevitch and Ali Foot and hoped to one day emulate their achievement of rowing in an Olympic Games for Australia in the lightweight four.