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Gyrocompasses

By Tim Bartlett | Posted July 2011

If a gyro starts spinning with its axle pointing toward a star that is rising over the eastern horizon, it will try to tilt upwards as the star rises...

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GPS Compasses

By Tim Bartlett | Posted July 2011

Swinging-card compasses have developed quite a bit over the past 500 years but they do not “always point truly”...

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Navionics App for iPad & iPhone

By Capt. Bill Pike | Posted June 2011

Navionics App for iPad...

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The Reason for Different GPS Positiions for the Same Location

By Capt. Bill Pike | Posted June 2011

You Gotta Be Kiddin’Can your chart (or Google Earth) give you one position and your GPS another?Some while ago I received a letter from William P. Carter, an observant...

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GPS Interference

By Tim Bartlett | Posted June 2011

Photos Courtesy of BoeingTechnicians at Boeing put the finishing touches on the LightSquared satellite, ready for its launch in November last year.Intentional InterferenceAs GPS...

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Standard Horizon CPN MFDs

By Tim Bartlett | Posted May 2011

Standard Horizon CPN MFDsCPN1010i AND 700i PLOTTERSBlurring the tenuous line between navigation instruments and computers even further, Standard Horizon’s CPN1010i and 700i...

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How to Keep Your Chart Data Up To Date

By Tim Bartlett | Posted February 2011

Top of the ChartsThere are numerous ways to keep your chart data up to date.Finding your way through shifting banks or a channel such as this one demands the very latest...

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Navico’s whispering sonar

By Tim Bartlett | Posted December 2010

Why shout when you can whisper?How Navico’s new breed of whispering sonar promises clearer pictures at greater depths.Three years ago, Navico introduced something that it...

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What’s a Navico?

By Tim Bartlett | Posted July 2010

What’s a Navico?Deconstructing and defining an emerging marine electronics giant.When I was first introduced to Simrad’s new NSE displays last fall, I just had to ask a company...

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A Sense of Direction

By Tim Bartlett | Posted June 2010

The strange and tortuous search for a way to improve GPS reliability.Last December CrossRate Technology introduced its first (and so far only) product: a combined GPS and Loran...

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Garmin 6000 and 7000 MFDs

By Tim Bartlett | Posted April 2010

There are new models at the top of the Garmin series, as well, in the form of two new ranges of large-format multifunction displays known as the GPSMAP 6000 and GPSMAP 7000 series...

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Garmin 700 series

By Tim Bartlett | Posted April 2010

A recent addition to Garmin’s range is a series of touchscreen plotters whose size and price slot them neatly into the significant gap between five-inch GPSMap 600 series, whose...

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Sea-Me Dual Band

By Tim Bartlett | Posted January 2010

Sea-Me, the popular RTE (Radar Target Enhancer) or “active radar reflector” has been dramatically improved. The new Sea-Me Dual Band does exactly what its name...

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