by Nigel Calder

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

I have a Soverel with a small diesel engine that has sat idle for a couple of years without fuel stabilizer. The engine starts, but runs rough. There is also no discharge from the exhaust line.
How can I stop the galvanic action I suspect is causing the delignification of the surrounding wood? More zincs, or no zincs?

Ask Sail: No-Go Engine

by Nigel Calder, Posted October 1, 2012
My Catalina 40 has a Westerbeke 42B diesel engine with less than 800 hours. After a head-gasket repair, the engine was put back into the boat...

Isolated Prop Shaft

by Nigel Calder, Posted August 25, 2012
Ask Sail: I have installed a shaft-saver coupling on the prop shaft on my sailboat and have realized the shaft is now isolated from the ground. Is this a good thing, or should I put a grounding strap on the coupling?

To Freewheel or Not

by Nigel Calder, Posted June 12, 2012
I sail an S2 8.7 with a Yanmar 2GM engine. When sailing, should the prop be locked or should I let it freewheel? If I should lock it, is it better to put the transmission in forward or reverse?
My question is this: what effect will diesel have on the blue desiccant beads in the H2Out? Is there some change I should make to the air vent?

Ask Sail: Voltage Drop

by Nigel Calder, Posted March 14, 2012
When I turned on my recently installed chartplotter, I got a “low voltage” message. Using a digital voltmeter, I measured 9.7 volts at the circuit breaker on the load side. Voltage on the battery side was 12.5 volts. 
Britain’s Southerly Yachts has been building shoal-draft cruisers for decades, so the 49 has a serious pedigree. Designer Rob Humphreys also works for Oyster, so there is a generous splash of luxury in the 49’s detailing and accommodations.  

Running Hot

by Nigel Calder, Posted August 24, 2011
Steph Lakner of Annapolis, Maryland, asks:"I have a Westerbeke engine (circa 1987) on a Cal 28. The engine overheats (to 210-215 F) after about 20 minutes running at full rpm. The impeller is fine, but water flow is reduced beyond the heat exchanger. I have found no obstructions (broken vanes, etc). I brought the heat exchanger home and cleaned it with vinegar. It was
Without doubt, the cruising-boat interior that inspired the most comment from showgoers this past fall was that of the newly introduced Hunter 50. We overheard several people proclaiming it “decadent”; several others termed it “amazing.” If the goal of an accommodation plan is to incorporate as many shoreside amenities as possible into a boat, the Hunter 50 surely has raised the bar for cruising
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