by Nigel Calder

Nigel Calder is an author and expert on boat systems and diesel engines

Galvanic Problems

by Nigel Calder, Posted June 18, 2014
In the August 2010 issue, Nigel Calder discussed zinc corrosion. As recommended I installed a galvanic isolator in an attempt to stop rapid zinc corrosion and blistering
I have a 1977 Pearson 28 and have replaced the old Atomic 4 gas engine with a three-cylinder Universal 20hp diesel engine. Do I need to change the original propeller that was driven by the Atomic 4?
Friends have suggested that I change over to LED lights down below. I was told that the LED lights are brighter and require less electricity. However, when I went to purchase LED lights a sales associate told me...
I have two 6-gallon gas tanks on my 25-foot O’Day, but when the motor quits and I have to switch tanks, there is still about 1 1/2 gallons left in the “empty” tank...
Last season I repowered my Catalina 30 with a new M3-20B Universal diesel engine. Its power curve was substantially different from the original engine, so I also changed the propeller. I ordered a new shaft, a new coupling half (fitted at the supplier) and a new prop.
I have a 1977 Pearson 28 and have replaced the old Atomic 4 gas engine with a three-cylinder Universal 20hp diesel engine. Do I need to change the original propeller that was driven by the Atomic 4?
I recently bought a share of an older boat, a Cape Dory Intrepid 9-meter, and put new 12-volt AGM batteries in her. Something, however, is draining the batteries.
I just read Nigel Calder’s article on the costs of generating energy (“The Cost of Energy,” Dec. 2012) and found it fascinating. I understand there is a high cost for generating energy at anchor by running an engine, but is there an additional cost to generating energy while underway? If my engine is running the alternator to recharge the batteries, as well as moving the boat, surely it must add to the load and increase my fuel consumption. Is the increase significant, miniscule or somewhere in between?

Create Power from Tides?

by Nigel Calder, Posted August 12, 2013
The government has, for a decade, studied the possibility of generating electric power from the tides. Because a sailboat on a mooring is subject to tidal flow, why can’t we use this method to help generate power? Sailboats sit on moorings for long periods, sometimes for weeks, and even a trickle charge would be beneficial.
when first pushing the start button, I sometimes get no response. Releasing and pushing the button a couple of times finally engages the starter.
  • facebook
  • twitter