Marine Technology

DYI electronic navigation

Navigation software for viewing electronic charts, voyage planning and in-voyage navigation has come a long way from the early days of raster images on a computer monitor. Navigation software packages are offered by an assortment of companies as either…

Optimizing Alternative Energy

A successful ocean voyage depends largely on the way we manage energy on our vessels, be it from the wind, the sun, the ocean, the auxiliary engine or a separate generator. As offshore sailors, our goal is to gain…

Affordable Instrument Packages

When looking for instrument displays to receive data from the various navigation, communication and security devices on our vessels, many…

A digital sextant

Sextants are wonderfully analog optical devices. A sextant user from the 1850s would have little problem using a modern sextant. Now a company in South Korea has begun offering something it calls the Korea Digital Sextant (KDS) that digitalizes…

BioBase by C-MAP Launches New Subscription Model

Egersund, Norway – C-MAP®, a leader in digital marine cartography and cloud-based mapping, announced today it has opened its BioBase™ EcoSound™ platform to include free subscriptions to qualifying organizations. Owned by Navico and operated through C-MAP, BioBase is a platform for aquatic…

Wireless cellphone chargers

Charging a cellphone, for most of us, requires jamming a tiny electrical contact into the base of our phones and hoping the…

Battery types

Wet cells: The de facto standard for high capacity batteries in boats for many years has been the basic wet cell lead-acid battery. These are somewhat simple in design. Plates are submerged in a liquid acid electrolyte contained in a…

Battery survey

What type of battery setup might make sense for your voyaging needs? We reached out to a selection of active liveaboard voyagers to get a sense of what they are using to power their vessels. Here are their answers to…

Alarms, getting to know them better

Editor’s note: This piece originally appeared in the Ocean Cruising Club’s monthly bulletin ( This Maretron screen is from a sophisticated vessel monitoring setup. Green shows normal ranges, yellow indicates borderline and red signals an alarm…

Marine Electronics, September 2020

Receiving weather GRIB files offshore has become much easier through the easy access offered by handheld satellite phones. No longer do you need to install a huge satellite dome on your vessel to receive this critical data while under way.

Satellite TV for cruisers

If you love watching television, you can still enjoy this pastime after you have sailed off for open water.

2020 NMEA/RTCM Combined Conference & Expo Moves to Florida

Highlights: Technical and business seminars, installer training, new product expo, product awards SEVERNA PARK, MD-The National Marine Electronics Association (NMEA) and the Radio Technical Commission for Maritime Services (RTCM) have agreed to hold their 2020 international convention together at the…

The cutting edge in EPIRBs

Since emergency position indicating radio beacons (EPIRBs) made their debut as an aid for tracking crashed U.S. military aircraft in the 1950s, this technology has steadily evolved into more compact, highly accurate, life-saving devices priced well within the budget of any serious cruising sailor.

GPS smartwatches

The race to combine a wide assortment of technology in small, hand-held wearable devices has recently yielded a new animal: the GPS-capable smartwatch.

AIS/GPS VHF with target display

AIS, GPS and a VHF radio with DSC are all must-haves on the modern cruising yacht. Now imagine having all of these features in one device.

Traditional depth sounders

Traditional depth sounders seem to get short shrift in dockside conversation these days, owing of course to the proliferation of multifunction chartplotters and the array of information they offer to cruisers with fingertip ease.

Dependable multimeters

The proliferation of electronic navigation, communication, power and security systems on modern yachts demands a dependable means of diagnosing these systems when they fail or fall short in performance.

Analog instrument displays

Most cruising sailors demand state-of-the-art electronic navigation systems for their vessels, but many skippers also like to preserve a traditional look in the displays they install in the cockpit.