Projects

The Price of Power

by Nigel Calder, Posted June 17, 2009
As part of my hybrid propulsion research I have been looking carefully at large-capacity litihum-ion batteries as a possible energy source on modern cruising sailboats. Lithium-ion batteries are common in cell phones and laptops, but they are rarely used in higher capacity applications. This may rapidly change, because the hybrid automotive and electric vehicle markets are in desperate need of

Prop Wash

by Nigel Calder, Posted May 17, 2010
In the April edition of Ask Sail, Nigel Calder asked readers to share ideas on how best to keep their props clean. The Q and A from the magazine sparked a discussion with readers chiming in from all corners of the country. Here are some of their ideas:Q: What do you recommend for keeping barnacles from growing on my prop, strut and shaft? For years, I've used metal
For a number of years, I used a piece of 2x4 screwed to the side of the garden shed as a mount for my 3.5hp Tohatsu outboard. It would perch happily thereon while I dangled its nether regions in a cooling tub of fresh water, sputtering and burbling away as the salt got rinsed from its innards.   This year, I decided something more sophisticated was in order for my faithful motor. I wanted a
Back in the day, each electronics unit aboard your boat did what it did, and never the twain did meet. Your depthsounder told you the depth, your radar showed what was around, your GPS told where you were, and so on. Today, of course, most electronics can be connected to onboard networks.
We were spending hurricane season in Trinidad on our Creekmore 34 Eurisko and thought we might as well haul her out to apply another coat of bottom paint. What we found when she emerged from the water turned a three-day quick haul into a three-month ordeal.

Beat the Heat: Retrofit an A/C System

by Bob Bell, Posted July 23, 2013
“I will not sleep on this boat. I’m going home–NOW!” said my overheated sailing mate and spouse, Monica.  
My brother was hanging upside down, peering through a 9-inch square cutout in a bulkhead at the raw-water pump housing on his 3-cylinder Yanmar marine diesel. “How the heck do you get the impeller out of there?” he asked me.This is a very good question. Removing an impeller is something that should be done on a regular basis; Yanmar recommends replacing the impeller on this particular

Keep it simple

by Sail Staff, Posted June 17, 2009
The decks on Horizon, our Hans Christian 38, are 20 years old and have seen the full spectrum of weather conditions—cold and rain for weeks on end in Alaska and constant sun and heat in the tropics. No matter where we are, our maintenance strategy is the same: keep it simple and keep it silver. As with anything boat-related, proper maintenance now is always much easier than an extensive

Energy Control

by Nigel Calder, Posted June 15, 2010
Recently, as part of my work on hybrid propulsion systems, I attended a demonstration where a large-scale lithium battery pack was deliberately pushed past the boundaries of existing experience. The intention was to run the system at 20 kW of output and 160 volts, creating a current flow of around 130 amps. Owing to a miscalculation, when we threw the switch and brought everything on line we
Ever had refrigerator angst? It’s a dreadful state of mind that consumes you when your reefer doesn’t deliver the goods. It’s been known to paralyze cruisers for weeks on end, trapping them in exotic ports while they lay in wait for that rare, elusive creature known as a marine refrigeration technician.
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