When it came time to replace the engine in the shrimping boat R.J.H. No. 1 operating in the Gulf of St. Lawrence and GaspéPeninsula in Quebec, mechanical simplicity, reliability and improved fuel economy led the vessel’s owners to opt for a YANMAR 6AYM-WST repower. Installed in 2015 by YANMAR dealer Enterprises Maritimes Bouchard, Inc. and supported by YANMAR distributor Diesel-Bec, the new 6AYM-WST engine runs at 659 mhp 1900min-1 coupled with a Twin Disc MG 518 ratio 5.92:1 marine gear.