Described by Boat International as “one of the world’s most amazing super yachts, that could spell the future for efficient long range cruising”, the striking 42.5m Trimaran Adastra certainly turned a few heads at its launching ceremony on the 11th of April 2012 in China for Hong Kong clients Anto and Elaine Marden.
Henleys designed and supplied both wing installations which included shafts, propellers, Kiwi shaft seals, Easiflow stern tubes, Thordon bearings and Flex O fold propellers.
The main drive propeller fitted to the C18 Caterpillar was a 40” diameter 5B “Tiger” design cast in Nibral and finished to ISO484/2 Class “S” standard.
Beam – 16 m
Hull Draft – 1.12 m (1.6m to tip of rudder)
Main engine – 1x Caterpillar C18 -1150 hp @ 2300 rpm
Outrigger engines – 2x Yanmar 110hp @ 3200 rpm
Generators – 2 x 36 kw custom in the outriggers linked to 110 Hp Yanmar engines, and 1x 26 kw Northern lights in Main engine room
Owner and Guests – 9
Crew – 5-6
Displacement light – Fully equipped and full stores and crew, no fuel and no water – 49 tonnes
Displacement cruising max – (normal operational load) 15000 litres fuel – 64.8 tonnes
Displacement ocean passage max – (only for occasional long ocean passages) 32000 litres fuel – 77 tonnes
Speed max – 22.5 knots
Range at 17 knots – 4000 miles
Fuel consumption at 13 knots – 90 litres per hour.
Fuel consumption at 17 knots – 120 litres per hour