Mike Slinn



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Practical Sailor

MarNav – Open Source Software

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I’ve had problems with timed transmit mode on my Raymarine C70 for years. The v4.29 software update seems to have finally solved the problem. Updated documentation is here.

In a recent blog, I mentioned that I was developing Linux-based open source navigation software for Willow Garage. In the course of doing this, I discovered that CodeWeavers’ CrossOver Linux product allowed Coastal Explorer / Chart Navigator Pro to run in a win2k bottle. That doesn’t mean that NMEA devices work with programs running [...]

I’m helping out at Willow Garage on their autonomous boat project. The onboard navigation computer actually drives the boat, and is supervised by an onboard mission planner. I’m working on a rudimentary remote navigation program so mission personnel can give high-level directions to the mission planner. Both the onboard computer and the remote [...]

NavPak Pro provides the most complete set of features for dead reckoning, however I didn’t recommend it for most sailors in this Practical Sailor review.

To help me test navigation software for an upcoming Practical Sailor review, I wanted a way to simulate NMEA 0183 data streams from a GPS and a wind sensor.
I discovered NemaTalker (29 euros) and the free open source com0com. This software combination allows me to simulate sailing through any area of the world, in [...]

This is my favorite feature of all the products I reviewed for the navigation software survey I wrote for Practical Sailor Magazine and Power Boat Reports.
GRIB weather data is provided free of charge by NOAA. Newer navigation products can display GRIB weather data such as pressure isobars and temperature, as well as sea state. Coastal [...]

I am preparing a review of high speed NMEA 0183 multiplexers for Practical Sailor Magazine. Your chartplotter can act as your boat’s ‘nerve center’, but only if all your instruments can connect to it. NMEA 0183 is the most common standard for connecting marine instruments together, and a NMEA multiplexer is necessary to connect many [...]

Maptech masters the art of making sense; at 15 years old, The Cap’n charts a new course.
I sold another feature article to Practical Sailor Magazine; my editor (Darrell Nicholsen) also put a lot of time into this monster review. Of all the articles I have written, this one took the longest to research by [...]