Yanmar engine a “dream fit” for Roger Hill catamaran
New cat from Noosa Marine hits the spot for Queensland owners.
Sunshine Coast boat builder Noosa Marine recently finished fitting a pair of 480hp Yanmar 6LY3-ETP engines to a new Roger Hill ‘planing power’ catamaran at its Noosaville facility.
Installing the Yanmar engines culminated a 13-month build for the builder. The builder had previously used the Yanmar 6LY3-ETP model in a number of new builds. Noosa Marine founder Julian Griffiths says the fit-out went “like a dream”.
“The cat has performed exceptionally well with those engines," he said. “After an initial water test, the small propeller was re-pitched and it is getting out of the hole very, very well.”
On its delivery run to Mackay, the new catamaran (named Barcoo Drift in a tribute to the owner's home district) had an average running speed of 21 knots at 80 litres per hour. While local Yanmar distributors, Power Equipment, have not yet released final sea test statistics on the new engines, Griffiths said he had seen impressive numbers from the bridge on initial water testing at the engine's full 3300rpm.
“It was getting in excess of 31 knots at wide-open-throttle from what we saw in early runs,” he said.
The direct injection, turbocharged, six in-line cylinder 6LY3 is a recent addition to Yanmar’s line-up. The owners of the new cat ordered the model specifically and, with a displacement around the 13 tonne mark, the twin 480hp engines are the recommended power choice for this Roger Hill design.
Using the Yanmar engines, the cat is designed to deliver excellent cruising speeds in the 20-25 knot range, according to the boat's designer. This shows the value of good design and a waterline hull length just under 13m.
The cat's new owners intend to enjoy her performance (and fishing) in the Whitsundays, one of their favourite boating areas.