Systems+Engines

Fuel Consumption: Tug Vs. Cruiser

by Nigel Calder, Posted February 15, 2013

A dinosaur of an engine that is over 70 years old can push a much larger boat than ours, weighing eight times as much, at similar speeds with more-or-less the same fuel consumption!

Power on the Move

by Adam Cort, Posted July 10, 2012

After proving itself in a number of offshore races, including last year’s Transat Jacques Vabre, the Watt&Sea hydrogenerator is now available in a cruising version.

As I knelt beside the open cockpit locker of my 36-foot Pearson cutter Sonata, I could hear the gentle whir of my freshwater pump. It didn’t sound normal. I reached down and felt the pump housing. The pump was in constant-cycle mode and running hot. It could pump until it burned out and still fail to pressurize the freshwater system I thought I had just finished

Electric Horses

by Nigel Calder, Posted March 10, 2011

This past summer I tested the latest generation of electric outboard motors from Torqeedo. These are much more efficient than traditional electric outboards, but with this advance comes a quantum leap in sophistication and electronic complexity.I find it intriguing that these outboards have been designed by landlubbers. One of the owners of Torqeedo, Dr. Christoph Balin, bought a house on

Hot Stick

by Tim Bartlett, Posted October 14, 2009

Jim Liggett of Cornish, New Hampshire, asks:"I am installing a lightning- ground system and plan to use a 5/8in rod extending at least 6in above my VHF antenna. Does it matter whether the pointed rod is solid copper or can it be copper-coated steel, as is often used for grounding rods on shore? If the steel rod will work equally well, is there a good way to keep the tip

Ten things diesel mechanics think every boatowner should know

by Capt. Bernie Weiss, Posted December 23, 2008

Diesel mechanics is not a difficult subject. In fact, all owners of diesel-powered boats can—and should—learn the fundamentals of operating and maintaining their engines. To run well, a diesel engine requires clean fuel, clean oil, and a lot of air. Routine maintenance will virtually guarantee years of trouble-free service and will keep your busy mechanic at bay.How a diesel engine works,