Systems & Propulsion

DIY survey of boat solar and wind turbine systems

Many used cruising sailboats on the market will have a couple of solar panels, a wind turbine, or possibly both. But are they working?...
A lithium conversion requires a willing owner and a capable craft. Enter the Privilege 435 catamaran Confianza.

What’s Involved in Setting Up a Lithium Battery System?

Our 2004 Privilege 435 Confianza (Connie for short) came equipped with traditional lead-acid batteries—5 100ah for the house bank and 2 starter batteries. We...

Leaping Into Lithium

Your dock neighbor just switched out her old 12-volt lead-acid batteries for lithium-ion batteries. Should you? The lithium solution will be more expensive, but...

Reducing Engine Room Noise

Noise impacts individuals differently. If your sailing partner complains about a noise that doesn't really bother you, it might not necessarily something that they can simply get used to. You will have to address it through active sound reduction measures. There are three basic approaches to making your boat quieter. The first step is to use flexible mounts to isolate the vibrating machinery from the hull. These help prevent the transmission of vibration through the solid structure of the boat, and the consequent reverberation of hull sections that can act like amplifiers. Correcting any engine-shaft misalignment will certainly help. The next step is to surround the noise-producing machinery in a tight, insulated enclosure to reduce air-transmitted noise. The final step is to line enclosed living quarters, such as cabins, with sound-absorbent materials.

Using Heat to Bend PVC Pipe

Over the decades, marine equipment has gone through a dramatic transformation as plastics have steadily crept into our onboard lives. In this first in...

Powering Your Boat Through a Storm

A sailing auxiliary engine should never be fully relied upon to bash into a storm; they are not sized for that. In many boats,...

Marine Diesel Repower Part 3: Sea Trial

This is the last of a three-part series describing the planning and installation of an inboard diesel engine in my previously engine-free Cape Dory...

Estimating Total Capacity in an Old Battery

Volt meters, ammeters, and bank monitors can all give you part of the story, but only a draw-down test, performed over 6-24 hours will...

Solar Power and Battery Checkup

Batteries and solar panels can be a black box. We can’t see or hear or feel what is going on inside. They’re not complicated...

Rhumb Lines: Yes, We Are the Lucky Ones

Slow down. Stretch. Breathe. Before we let the coming summer carry us away, dreamy, windswept, mouth wide open, ready to inhale each sultry moment and...

This “Bulletproof” Cruiser Has a Serious Weak Spot Caliber 40 LRC...

If you’re shopping for a serious cruising sailboat, the Caliber 40 LRC is often described as “bulletproof.” Heavy displacement, huge tankage, conservative construction, and...

Latest Sailboat Review

Union 36 Used Boat Review

While not the best boat for light-air sailing, the Union 36 is a good sailboat for the bluewater cruiser. It wont get you there fast, but it will get you there comfortably and in one piece. The boats teak decks and lavish use of interior wood is attractive but requires much upkeep and maintenance. A product of the Taiwan-U.S. boatbuilding industry, the Union 36 is a heavy-displacement, full-keel, cutter-rigged double-ender designed for ocean sailing. The Union 36 is nearly identical to several other boats built during the same period: the Hans Christian 36, Mariner Polaris 36, and the EO36. According to well-known naval architect Bob Perry, the Union 36 and its cousins are all based on the design of a 34-footer that Perry was commissioned to create back in the early 70s.