The Marine Electronics Hub
I’m tentatively proud of Gizmo’s 2014 forward transducer installs (which you can see better by clicking on the photo above). I knew it would be hard to remove the three ducers installed there in...
“Two way” doesn’t just refer to the fact that a DeLorme inReach handheld satellite messenger/tracker will let you text back and forth with people pretty much like a cell phone. I also tested the shore side of the system by loaning the sample inReachSE model to friends Doug and Dale Bruce when they went on an adventure cruise to some remote islands south of New Zealand. So that’s me messaging from Maine when I saw where they were headed (via their MapShare track), and then Doug texting me back a few minutes later. Yes, he had a little trouble with SE’s little cursor keyboard, but heck, he was in rough seas on the other side of the planet!
As much as I value LED lighting, I was hesitant to change Gizmo’s navigation light fixtures. Why spend the (significant) money and refit time to save power when a big alternator is always running at the same time as the running lights? But I had already removed the boat’s side light boards for refinishing last fall and then I noticed that the cost of at least some LED nav lights has become quite reasonable. It was nearly an impulse buy when I put a pair of Aqua Signal Series 33 side lights in my Defender cart at $45 each. I’m not totally satisfied with the purchase, but I do expect the Aqua Signals to be a vast improvement over that old incandescent fixtures…
Panbo is very pleased to publish the first guest entry of esteemed marine electronics installer and writer Bill Bishop ~ editor
It’s a rare case when we actually get to see into some technology we use, and this is one. You’re looking at a special clear casting of the DownVü/SideVü transducer that Garmin designed for its GCV 10 CHIRP-based sonar. As the photo suggests — you can click it much bigger — there is much more to this tech then you might initially think. The long silvery bars (you can see two of three) are the ceramic piezo transducer arrays. The shorter one is for the down scan. The metal dot on the right side is the temperature sensor. In Garmin’s words “the DownVü and SideVü transducers were designed using an innovative multi-element shaded array to provide clear, picture-like imaging. The range and side-lobe performance is like nothing else out there.” This is not simple stuff. With today’s rapid developements consumer marine sonar is now nearly the equal of sonar systems owned by oceanographic research institutions, albeit with less power. The average boater isn’t doing seabed mapping at extreme depths, but hey if you mounted this transducer on a tow fish…
A surprise high point of last year’s International Boatbuilders Exhibition (IBEX) was ConnectWorld. For several years the National Marine Electronics Association (NMEA) had staged a substantial ConnectFest NMEA 2000 networking demonstration on the show floor — remember the Fish Gate 100? — but for some reason they dropped out in 2013. I was skeptical about a hurried effort to keep the idea alive managed by a manufacturer instead of NMEA. What I found, however, was that Chetco Digital Instruments had put together a nice demonstration of multiple brand devices sharing data across multiple networks. While NMEA 2000 made a lot of it possible, there’s some great development going on beyond the N2K backbones and I’m excited about what we’ll see in Tampa at IBEX 2014…
It’s not an exciting photograph, I know, but cables are a fairly big deal when you or your installer get down to the real nitty-gritty of putting a marine electronics system together. While it’s great that the NMEA 2000 cable and connector standard is pretty much taking care of lower speed sensor networks regardless of equipment brands, the sore spot now is the Ethernet cables used for high speed data like radar, sonar, IP cameras, and chart sharing. Though standard Ethernet cables easily connect many different devices in our homes and offices, in the marine world the connectors are not standardized. In fact, some Raymarine customers are dealing with two proprietary Ethernet connector designs as the company transitions to the Raynet plugs seen above. But Raynet makes sense to me and shouldn’t cause undue pain once all the available options are understood…
If you like sailing with some electronics running, or just anchoring without a generator, you’re probably very interested in the State of Charge (SoC) of your battery banks. Voltmeters, however, only hint at what’s going on, and true battery monitors require careful calibration and the installation of shunts, but still tend to go out of whack over time. Well, darned if the great RC Collins of Compass Marine didn’t go to extraordinary lengths to prove that the Smartgauge — a little known product that’s been around for almost a decade — can somehow accurately measure SoC without calibration and without a shunt, and yet still get even more accurate over time. Apparently when it shows your Charge at 92%, as above, your battery bank really is at 92% capacity…
When Garmin recently introduced GNX20/21 displays, it led to questions about the power needs of similar but all-color NMEA 2000 instruments. And that led me to finally make up a special N2K cable that I can use with my trusty Power Analyzer Pro to measure the 12 volt current flow to an individual N2K-powered device. So what you’re seeing above is that a Raymarine i70 working with live data at 100% brightness level is using 0.13 amps. That’s not much by most standards, but dropping down a hair to 90% brightness reduced the power draw 20%…
While Simrad announced ForwardScan at the Miami Boat Show, details are scarce and the concept diagram doesn’t really show what a ForwardScan screen is going to look like. Yes, like other Foward Looking Sonar (FLS) systems, the goal is to display the water column and ocean floor in front of the vessel to “help boaters eliminate the worry of potential groundings in unfamiliar waters” and, yes, FowardScan is the first FLS to be fully integrated into a multifunction display system. Well, I’ve hounded Simrad for more information — all of which sounds good — and it also looks like I will get to test ForwardScan against what seems like the most similar existing product…
It’s 2014 and a sealed plastic 5-inch bobber can indeed contain a fairly able 400 Watt 125 kHz fishfinder and a WiFi radio, plus enough rechargeable battery to run both for a few hours. The SonarPhone T-Pod will strike many as a toy, but it actually works quite well considering its small size and price tag ($130). And the manufacturer Vexilar puts the same technology into models meant to install on small boats, which means that dedicated iPad (or Android tablet) boaters do indeed have a fishfinder option…
