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4th Sep 2026
What Fire Extinguishers Do I Need on a Leisure Boat in the UK?
There is no single extinguisher number that applies to every UK leisure boat. The answer depends on…
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24th Aug 2026
Boat Shore Power Explained: Safe Connections, Galvanic Isolators and Corrosion
Boat shore power allows a vessel to use marina mains electricity for battery charging and onboard a…
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21st Aug 2026
Do You Need a Licence for a Marine VHF Radio in the UK? Ship Radio Licences, SRC, MMSI and DSC Explained
Yes - in normal UK use, a marine VHF radio involves two separate requirements: the radio equipment…
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Voltmeters
Marine Voltmeter - Marine Voltage Gauges
Marine voltage gauges are used to check the voltage in electrical circuits. This is gauged by measuring the difference between positive and negative voltage inputs. When the voltmeter is installed, it will measure the difference between the voltage at the first and second point, so you will know how much voltage is travelling between the two points.
Ammeters are similar to Voltmeters and are used to measure the current in a circuit. Ammeters usually have low resistance, so do not cause a significant voltage drop when the circuit is being measured.
So you may be thinking, do I need a voltmeter, or an ammeter? The truth is, we recommend both. The difference between the two is that a voltmeter measures the emf or voltage across any two points of the electrical circuit, where-as an ammeter measures the flow of current.
Why Shop With Pirates Cave Chandlery?
Since 1991, we've gained an excellent reputation and built up a loyal customer base, thanks to our excellent customer service and fantastic range of products at great prices - which is why we're rated 'Excellent' on reviews.io! We pride ourselves in providing accurate, specialist advice based on the individual requirements of each customer.
We understand marine electrical systems can be tricky, especially voltmeters. This can make it difficult to choose the right product, especially with the number of choices and volume of information available today. That's why we aim to offer an excellent range of voltmeters that are only sourced from leading brands, so your investment is the right one.
We're not just online either, our Rochester store is one of the largest bricks and mortar chandleries in the UK, with over 10,000 items in stock. Come and visit us today, we're open 7 days a week! Alternatively, you can contact us via email or call us on 01634 295 233 and a crew member will be on hand to help.
All of our orders are shipped via our quick and secure, fully tracked service - with most orders shipped the same working day on a next working day service.
