Marine Electronics

NMEA 2000 (aka NMEA 2K or N2K) is the communication standard replacing NMEA 0183. It is a technical standard (IEC 61162-3) used for connecting marine sensors and display units within a boat. The major differences from NMEA 0183: NMEA 2K operates at 250 kilobits-per-second, about 100 times faster than the 4,800 baud of NMEA 0183.

Its dusk on an overcast, gusty day, and raw data is pouring into your wind display from the masthead, GPS, and the knotlog. Can you clearly see the information on the display, and more importantly, is it meaningful? Can your gloved fingers push the buttons? Can you easily change the way wind data is collected, processed, and displayed so that it best reflects the conditions? These are among the things testers examined for this report, Part 2 of our wind-sensor evaluation, which focused on the display and user interface. In Part 1 (PS, March 2014) we focused on accuracy and durability of the anemometer and vane sensors that feed into the displays.

In a nutshell, autopilots have one main function: to assume control of a vessels steering and control its heading, be it a specific course or on a selected route or to a waypoint. As with any crucial piece of gear (anchors being a great example), cost should not be the primary consideration in the selection process. Its crucial to select a unit that has both the power and ability to steer your boat effectively in all sea conditions youre likely to encounter.

Autopilots are one piece of electronics gear that truly has something to offer every sailor-from gunkholer to bluewater cruiser. Having this extra crewmember onboard not only eases the burden of shorthanded sailing, but also helps prevent helm fatigue. An autopilot allows solo sailors to use the head, more easily raise sails, or grab a bite to eat. Crewmembers can enjoy a passage, passing the time reading a book or watching the scenery without being a slave to the helm.

Since we last looked at onboard Wi-Fi antennas/boosters (PS, April 2010), there have been no notable newcomers to the field, but there have been some technological advancements, particularly by the Canadian company Bitstorm. In 2010, we favorably reviewed the Bitstorm unit, so we decided to check out the latest version of the device to evaluate the improvements. Testers put the 2014 Bitstorm Bad Boy into long-term testing during an extended cruise along the Florida Gulf Coast.

In November 2010, Practical Sailor posted a Reader Workbench article written by subscriber Ed Mini of Mystic, Conn., on a do-it-yourself Wi-Fi booster/antenna assembled from parts ordered primarily from Data Alliance and Home Depot. The system did a good job of boosting the distance users could connect with onshore hotspots, and the cost was under $100, not counting labor. About a year later, PS tester Ron Dwelle decided to put together a similar system, but he used the components that commercial vendors use. Heres a rundown of his system, which has stood up well for three years.

Early into the 645-mile race between Marion, Mass., and the island of Bermuda in 2009, trouble brewed aboard the C&C 40 Corsair. The bizarre situation that the crew of Corsair faced is described in detail in a 2011 article, Lost at Sea, written by Diane Kelly in Ocean Navigator magazine. It all began when the navigator, 75-year-old Ron Chevrier, started acting strangely.

For better or for worse, the modern cruising sailor is becoming more like an airplane pilot. Safely ensconced out of the wind, the helmsman relies on instrumentation to provide him with information about our environment. Should he bear off for more speed, set the screecher, or tuck in a reef? Increasingly, were seeking these answers in digital display rather than strips of yarn in the rigging and the hair on the back of our neck.

A lot can be learned from really small boats that carry no crew. In fact, sailing robotics-SailBot for short-is attracting sailors and engineering students from universities across North America and Europe. These competitive research programs are a proving ground for on-the-water autonomous craft, and they give us a glimpse of what the future of marine electronics may have in store.

Two racing sailors from Charleston, S.C., got together last spring to develop an economical alternative to electronic compass devices like the $340 to $500 Velocitek (PS, May and September 2011), the $460 to $735 Tacktick (PS, November 2009), and the $600 Sailcomp. The result? The Regatta Recon performance sailing app for Android and iOS devices.