Twin Dtorque outboard solution repowers sailing catamaran
The installation of two Dtorque 111 turbo diesel outboards has successfully repowered a 52-foot Hitchhiker multi-hull, SV X-IT.
The refit project to mount new twin 50 hp Dtorque engines in an inside mid-hull position upon hydraulic plates within sea-breaking pods has achieved impressive results in sea trials, with enhanced performance reported under both power and sail.
Using Dtorque outboards supplied by YANMAR’s Australian distributor, Power Equipment, the installation was devised by Ballina Slipways shipwright, Michael Cocks, and catamaran X-IT owner, Ilan Sebban. Sydney-based Ilan wanted to replace his cockpit-mounted 60 hp petrol outboards for a safer and more reliable alternative and had discounted diesel inboards due to sailing hull compromises. The 804cc Neander-engineered outboards were selected.
The midship position was integral to the plan to make the boat sit better in the water, with sea-breaking pods then designed and fabricated in front of each outboard position to mount the Dtorque engines when in use, and protect and reduce drag when retracted from service. Jacking plates allow both proper water entry for the outboard legs and full retraction away from the splash whilst under sail.
On the cat’s return sail, it hit close to 19 knots on multiple sections of the trip and averaged 9.5 knots under sail, with improved boat tracking in the new configuration, particularly with downwind sailing. The performance of the new Dtorque diesel outboards also delivered some impressive numbers, logging just over 10 knots on the sea trials and a similar speed under motor on open waters, with a lack of vibration under power and running temperatures below 40°C.
“This interesting catamaran repower project confirms the capabilities and versatility of this unique diesel outboard and its appeal for a wide range of applications,” says Justin Hogen, YANMAR MARINE INTERNATIONAL, Area Sales Manager Outboard Engines. “The combination of long range, low running costs, durability and low emissions offers key benefits, while boat owners will also appreciate the increased on-board comfort, safety and minimal maintenance.”
A modern classic of the larger recreational multi-hulls, SV X-IT was the last built by the founder of Hitchhiker designs, John Hitch, in around 2005. With the backup of reliable and capable diesel power, owner Ilan plans to sail her to Cape Town next year.
The Neander Dtorque Turbo Diesel outboard is distributed worldwide by YANMAR.
