MJM Launches New 4 with Volvo Diesels
MJM has launched its first MJM 4 open-bow performance yacht with twin Volvo diesel engines. In tests off its factory in Washington, North Carolina, the 46’ 8” boat topped out at just over 45 mph. And it was quiet. At an easy cruising speed of 29 knots, it registered just 71.3 dB(A) at the helm. I drove the original MJM 4 off Newport, Rhode Island, with Peter Johnstone, the president of the company, when it was launched in September, 2022. Then it was powered by two 600-hp Mercury V12 outboards. It was fun and fast, with a top speed of…