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Electrical

The grounding wire protects you from shock.

We’ve come a long way, baby, but our boats may be wired for yesterday Issue 5 : Mar/Apr 1999 The shorepower hookup on my first sailboat was a mechanic’s droplight and an outdoor extension cord — uncom...

Steve Cooper and his electric-powered Rawson 30.

Auxiliary motor borrowed from a fork-lift truck; batteries from golf carts Issue 20 : Sept/Oct 2001 It was the kind of day that couldn’t figure out if it wanted to rain, be foggy, or grow dark. Rainbo...

Pictures of a garden light repurposed into a cockpit light

Why not a solar garden light? Issue 23 : Mar/Apr 2002 The sailing club we belong to has limited dock space. Therefore, the majority of us have our boats on moorings. This is not normally a problem, bu...

Shorepower cover picture

Issue 25 : Jul/Aug 2002 At our dock we have three shore cables: the 35-amp AC power cable, the telephone cable, and the cable-TV. To keep the shore-end plugs of these cables out of the weather when th...

Diagram of removable taillight assembly

Create a removable taillight assembly for your boat trailer Issue 28 : Jan/Feb 2003 It’s early May. We’ve had a great launch and sail. Sally and I have enjoyed our first day on the water. Our Yankee S...

Ohm’s law for DC and non-inductive AC currents

Thinking of a rewiring job? Here’s what you need to know Issue 29 : Mar/Apr 2003 There re a few fundamental principles you need to understand before you do any boat wiring. They are derived from Ohm’s...

One of the simplest and most prized projects on Cade and Lisa Johnson’s Polaris 43 is this array of colored LEDs inside a 6-inch woven basket. They use this upside down in the cockpit as a night light.

Modern lighting projects for cruising sailboats Issue 44: Sept/Oct 2005 WE BEGAN TINKERING WITH LED lighting in our boat several years ago. Since then we have completed numerous small lighting project...

A typical wiring diagram for a single solar panel. An ammeter can be inserted in the positive line from the solar panel for monitoring output.

Keep your batteries topped up with a slow but steady charge Issue 46 : Jan/Feb 2006 On a bright, sunny day, with the sun directly overhead, the sun supplies about 1,000 watts of energy per square mete...

The simplest and most inexpensive inverters merely plug into a boat’s cigarette lighter outlet. These can supply up to about 150 watts of AC power to low-wattage devices and usually have a square-wave output.

Converting battery power to alternating current Issue 62 : Sept/Oct 2008 An inverter is an electronic device that converts direct-current (DC) power (the output of your boat’s battery) to alternating-...

Kerosene anchor light. This type of anchor light may be attached to the forestay. There is a semicircular bail under the bottom of the anchor light. usually a shock cord is attached to this bail to reduce the anchor light’s swing as the boat rolls.

Complying with regulations Issue 63 : Nov/Dec 2008 It seems that recreational vessels anchored without anchor lights are more the rule than the exception. However, the International Regulations for Av...