Going Up the Mast—Part 1

Matt brings his professional engineer’s understanding of forces and his construction site fall-arrest training to bear on one of the most potentially dangerous tasks we sailors are called upon to do.

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New Satellite Communications Systems

For nearly 20 years billionaires have been promising that worldwide, fast, always on, and reasonably priced internet, that we could use anywhere on our boats, was just around the corner, but now Matt makes a convincing case that we really will see this soon, and why things are different and better this time. Most important of all, he explains what we need to do to get ready.

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The Five Great Lakes

Tucked into the heart of North America, five hundred miles from the sea, lies one of the world’s great adventure cruising grounds. A quarter-million square kilometres of water, and seventeen thousand kilometres of coastline, call out to sailors seeking a season or two off the beaten path.

What Marine Engine Duty Ratings Mean To You

Fuel map for 105, 90 and 70 kW versions of the same 4 litre diesel engine

Just what is a commercial or continuous duty rating on an engine, and should you get that? Matt starts this chapter with the reason that these ratings exist, and then moves on to how to select the correct engine duty rating for a displacement boat.

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Controllable Pitch Propellers (CPPs)

So far in this Online Book we have learned about the fundamentals of engine and propeller efficiency and, in the last chapter, we looked at a way to make our existing engines a bit more efficient. In this chapter Matt explains a much better way to get the very most out of every drop of diesel fuel.

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Propeller Efficiency

Matt brings his customary clarity to a complicated subject: propellers. Reading this post will cause you a bit of brain sweat, but doing so can help you get big gains in engine efficiency.

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