Articles: All Categories

Page 1 of 8    Total Results: 73

Where is the best place to install a solar panel on my boat?

We get this question a lot and it all depends on what type of boat you have and how much solar “real estate” you have available. The first consideration is shadows. If you own a sailboat, your biggest concern will be the shadows cast by the mast, boom and rigging. On a powerboat, you will have to consider the arch and antennas......

Looking for Visitor Moorage? There’s an App for that.

April is always a good time to start planning your summer boating and there is a new app that makes booking visitor moorage easier than ever. Swift Harbour, from Yachting’s Best Media, allows you to save your boat information in the app so as soon as you choose a marina, you receive the price based on your boat length and time of year............

Battery Charger Settings for Different Types of Batteries

At the Vancouver Boat Show this year we received a lot of questions about sizing a battery charger, the proper settings on a battery charger, and if you can use one charger to charge different battery chemistries, for example, flooded lead acid or AGM lead acid.

The Perils of Flooded Lead Battery Discharge Below 50% and Partial State of Charge

Depth of Discharge (DoD) is used to describe how deeply a battery has been discharged. Cycle life is the number of times a battery can be cycled to a certain point before the battery will reach the end of its usable life. There is a direct relationship between the DoD and the cycle life of a battery.

Battery Chargers

Any boat that is moored where there is shore power available will benefit by having a battery charger that converts AC power to DC power which can be stored in the batteries.

Battery Charging Rates

Slow and steady wins the race when it comes to battery charging. It is important to bring a flooded lead/acid battery to at least 14.4VDC to get the electrolyte circulating and avoid stratification. However, prolonged charging above 14.4VDC can lead to hydrolysis (cleaving of the water in the electrolyte into hydrogen and oxygen).

Negative Battery Switching Troubles

We recently had to trouble shoot a problem on a boat that had negative battery switching instead of positive. In North America, everything is switched (and fused) on the positive side of the battery. In Europe, some boats have both positive and negative battery switching (i.e. Beneteau) however, we have never seen a negative only battery switching before.

Thermal vs. Magnetic Circuit Breakers

Thermal circuit breakers respond to over-current situations, as their name implies, by the circuit generating an inordinate amount of heat causing the bimetal contacts inside the breaker to disengage due to unequal expansion. A magnetic circuit breaker responds to over-current situations by a loading coil inside the breaker lifting the contacts apart when the current flow through the coil is sufficient to overcome the spring force holding the contacts together.

Engine Starter Circuit

A common calamity for which we often get requests for a service call is the engine failing to start or even “turn over”.

Alternators

Early electrical pioneers discovered that passing a magnet in close proximity to coiled wire induced an electrical charge, and that a rotating magnet in front of coiled wire created alternating current. This electrical principle is the basis of an alternator. An alternator is a rotating machine designed to produce alternating current that can then be rectified to produce directional current that can be used, or stored for later use in a battery.

Page 1 of 8    Total Results: 73