I got the test Garmin 545s and a new Raymarine A60 installed on Gizmo and took a test run around my local Lake Megunticook. I don’t think Navionics, Garmin, or any one else has electronic charts for this particular lake—or many lakes in Maine for that matter—so the plotter functions were pretty pointless. But I did get a taste of both their dual-frequency fishfinders. For starters I was rather shocked that neither seemed to interfere with the other, even when both were set to the same frequency, and even though the transducers are about 6” apart on the transom. They simultaneously held onto the bottom even at 20 knots too. Is this an aspect of the digital signal processing both claim to use?
Cool. Not only has Lowrance switched to standard style N2K screw connectors, but they’ve also added the nifty Double T fitting seen above, and they seem to be emphasizing NMEA 2000’s name and multi-manufacturer compatibility over “LowranceNet” in their new marketing (and, if interested, don’t miss their new PDF on the general N2K subject). To clarify, all new Lowrance connectors/cabling with red accents can plug directly to any standard NMEA 2000 device, which includes all of Maretron’s offerings, a few larger Garmins, and now all sorts of Lowrance displays and sensors. A simple patch cable will be needed to network with older blue-accented LowranceNet devices and/or cabling, or to Raymarine’s SeaTalk2, SimNet, etc. Apparently Lowrance’s cabling is not yet NMEA certified, but apparently that’s not stopping folks from using it beyond Lowrance gear. It sounds here like “yachtjim” used it to interface a Suzuki 250 outboard to a Garmin 5212 (guess they’re shipping now). He’s quite happy with the engine screens on the Garmin, but warns that since the Garmin doesn’t output any NMEA 2000 data, it won’t help do fuel calculations on his Lowrance LMF instruments. I’m just about to get back to my Garmin testing, by the way. And, finally, a Thanks! to Salvador Castellá for the head’s up about Lowrance updates. He works for the Spanish company Albatross Control Systems, which handles just about everyone’s NMEA 2000 gear under the Alba brand plus makes its own analog-to-N2K converters plus a system for collecting it on a computer and even sending it ashore.
So somehow when I was actually plotting Spirit of Bermuda’s Class B AIS output in Hamilton Harbor my screen shots failed to save. But I still have the marks I made every time its plot updated and you can sort of see the jumping bean effect that results from Class B’s 30 second update rate. I connected them with route lines so you can get a better sense of scale, bigger here. As discussed earlier, a 30 knot boat is going to plot every .25 nautical miles; Spirit at 9 knots plotted at about .07 mile increments. It was a little disconcerting, especially when she made large course changes rounding up to a pier. (And, by the way, would have been twice as bad if I had been using a single-channel-at-a-time receiver). But, again, I still think Class B is valuable regardless, plus I figure some smart developer(s) is going to figure out a way to dead reckon these targets in a way that’s not confusing. Finally, small world department, Spirit was built only a few miles from Panbo HQ at Rockport Marine, and we watched her launch from the bridge of Shanghai Baby last August, as noted in an article just published in PMY.
My latest PMY electronics column, “Connected Cruising”, is now online and here’s a full size version of the screen shot I used to illustrate a successful online cell phone venture using Motorola’s Phone Tools software. A PMY forum comment from Robert Stronger adds some interesting detail to this story:
Despite indications that I only think about AIS, I do have some other subjects! A big one recently has been Lyman-Morse Boatbuilding. This morning I just finished up a PMY Sept. feature about the company’s woodworking department—now 50 crafts-people strong, and doing phenomenal work—and I’m researching an eventual electronics column about Electra, which began with an early June trail run. What a boat! You can actually feel her lightness (carbon laminates, cored panels, etc.) as she gets up and cruises in the mid 20 knot range with a relatively minor wake. And what a helm! It’s unfinished and undressed in this shot, bigger here, but you can sense the excellent sight lines, both outside and to the various screens.
What luck that I got to monitor another active Class B transponder while testing one myself. As you can see above, and bigger in my first Nauticast B post, ACR’s included “Link2AIS Class-B” software identified the training ship Spirit of Bermuda’s AIS as a B model. Coastal Explorer did not make this distinction but it did decipher Spirit’s name and other “static” information. As mentioned in my one offshore post, none of the five ships I spoke with were getting our name on their Class A AIS displays, though they could see our MMSI, position, speed, and heading. We’ve discussed this issue before, and I’ve written about it in several magazines (Professional Mariner most recently), but let’s review:
