I like to think that one function of Panbo is to be a place where marine electronics enthusiasts can share their thoughts—rants included—with each other, and with the many industry folks who read the site. That usually happens via comments but guest blog entries are also welcome. Hence we have the following bitter sweet Christmas tale from Dan Corcoran (aka commenter “b393capt”). Thanks, Dan!
Sorry Breeze Pleeze, no marine electronics in your stocking this year …
My wife wants me to get something on the Christmas list for Breeze Pleeze. Cool, I would really like that. I already had a solid plan to spend the winter storage period wiring a new N2K backbone into my 39’ foot sailboat Breeze Pleeze and her two N2K capable chart-plotters. So for Christmas I would, err .. I mean, Breeze Pleeze would potentially get her first N2K component.
So they’d run out of press kits, and there’s nothing on the Web about them (yet), but there they are—a half dozen or so new Raymarine autopilot models that will be known as the SPX range, and look like replacements for the current range. New features? “Every SPX system comes with rate gyro” included; “Quicker install—no rudder reference required”; “over 10 dedicated fishing patterns” (note some at bottom of photo); and “Access to SeaTalkNG (aka, NMEA 2000) information via the ST70 color autopilot head.” So, given this week’s Garmin announcements and the new Simrad systems, I think we just went from zero to three brands of N2K-talking autopilots!
So Simrad has introduced two new auto pilot control heads, the AP 24 above, and the larger AP 28. As best I can tell they both enable the same rich suite of AP features, which include steering patterns and steering to a contour (both appreciated by trolling fishermen), ROT control (which I think means turn rates adjusted for G force), virtual rudder feedback (i.e. rudder sensor not needed for outdrive installs), and “No Drift Course” (even if you just set a course, the pilot creates a virtual waypoint and corrects for current and leeway). But the really big change from previous Simrad models is that these heads use SimNet, a cable modification of NMEA 2000, to communicate with new AC12 and AC42 pilot computers as well as with SimNet rudder and compass sensors included in Simrad’s new IS20 instrument series (which also looks interesting).
Yes, a first look at Furuno’s NavNet 3D had me burbling “incredibly sexy”—and I will explain that!—but today let’s talk about how thoroughly the 3D system embraces NMEA 2000. For starters there’s a standard N2K connector on each of the three NN3D displays, and the Product Guide lists lots of specific standard PGNs they can input and output (so there should be no Garmin-type data surprises). Now check out a bigger version of the NN3D “building blocks” diagram above to see how many N2K sensors Furuno itself is offering. Besides the FI-50 instruments already discussed, there’s an interesting N2K SC-30 GPS Heading Sensor (said to be reasonably priced and very accurate), an N2K Weather Station, an N2K Smart Transducer, and an N2K GPS. Now at least a couple of those are obviously rebranded Airmar products, but note too the odd “Ethernet…dotted line…NMEA 2000” label on the UHD Radar Sensors (mentioned yesterday). You see each of those scanners has an N2K connector on it, able to both power any of the Furuno N2K sensors and take their data, packetize it onto NavNet, and deliver it around the boat (and beyond, if and when Furuno decides to extend NavNet like, say, N2KView). The sensor data coming through the radar scanner is available to any manufacturer’s N2K device via the NN3D display’s port, and I’m told that any N2K data, even proprietary PGNs, going into that port is put onto NavNet. The installation possibilities are pretty amazing. Like radar, weather, and GPS from an antenna mast with only one power cable and one Ethernet cable. At any rate, Furuno may be one of the last of the big marine electronics manufacturers to adopt NMEA 2000, but, man, didn’t they!
FloScan has been measuring fuel flow for over 30 years, so I’d guess they have a darn good idea how to do it. It’s refreshing that their new NMEA 2000 Diesel Monitoring System focuses on what they know well and let’s the resulting data go wherever you want. The flow sensors and those “hubs” seen above, bigger here, are all you need. Yes, you can buy FloScan’s round gauge upper right, but you don’t need to. All data is sent in standard N2K messages, and the little calibration needed is done right in those boxes. The rest of this NMEA Conference booth had Simrad, Lowrance, and Raymarine displays all showing the gallons per hour, remaining fuel, etc. Note that FloScan’s site says that, “Furuno is currently developing NMEA 2000 products which will interface with our system.” But we knew that, right, and will know more when NavNet #d debuts (hey, I might live blog it, if there’s WiFi there). Note, too, how the port engine is “Instance 0” in the N2K system and the starboard engine is set as “Instance 1”. You can set that with a switch in the hub. But who the heck decided to start instances at zero instead of one. Wouldn’t it be better if, say, GPS #1 was instance 1, GPS #2 instance 2, etc.?
It’s a crappy picture, but this scene, bigger here, does give some sense of what Raymarine’s new ST70 instruments look like next to the brand new Furuno FI-50 series mentioned yesterday. The ST70’s look almost as good as the PR photography, but you can see that the screen is a little smaller than Furuno’s, which will also cost less (“about the price of ST 60s”, said the Furuno guys). The FI-50s aren’t at all graphic, but I thought the wind gauge with its “Formula 1 style” white face was very readable from a distance. There are three more FI-50 displays in that same style—close hauled wind, heading, and rudder angle. There’s also another digital display with one large data field, and the backlighting on all is automated and they draw little power as those are OLED screens. I fooled with the button controls and found the instruments easy to work, and that there are lots of data types supported. The picture, by the way, was taken at the Airmar booth and the NMEA 2000 wind data is coming from a new Weather Station model that outputs both N2K and 0183, has improved sensors, and will ship “this winter”. And the network could have included a new series of Simrad N2K instruments that look quite interesting. There’s much to learn about all these new instruments, but there’s little doubt that Furuno has done well on the N2K cabling front. Each of the FI-50 instruments has both male and female metal Device Net style connectors on the back, so they can be either tee’d from a backbone or daisy chained. Each also includes a switchable terminator so it can be set as the end of a backbone. Finally, seen below, Furuno has come up with an N2K cable box that can act as a backbone junction and 6 tees. This will be useful to an installer with tricky wire runs, a tight budget, or a burning need to strip wire. Oh, and the two wind instruments have a third connector for a new Furuno analog wind sensor whose data goes out as standard N2K PGNs, and the FI-50 brochure suggests that that Furuno will also be offering an N2K Weather Station and Depth/Speed/Temp triducer (no doubt Airmar’s). All good news, but possibly minor compared to NavNet 3D, debuting next Wed. night. By the way, Furuno is showing a bit more 3D leg here, and I like it.
NMEA 2000—able to bring tons of essential sensor data to a computer in an easy, standardized way—should be a huge opportunity for marine software developers. But there have been two major impediments. One is the lack of enough N2K networks to make its use worthwhile. That is going to change as more major manufacturers get seriously on board. For instance, tonight, when the NMEA Conference exhibition hall opens, I will get to see Furuno’s new range of N2K instruments (above) and also Airmar’s new high spec N2K/0183 GPS compass (yeehaa…and more on those soon). The other, particularly for small developers, is the substantial cost of getting a NMEA 2000 product certified. But I’m hearing about an impending NMEA initiative called “Intelligent Gateway” that sounds like it will largely take care of this problem. The concept is that a N2K gateway like Maretron´s USB100 can act as a firewall insuring that any software on the other side of it can not cause problems on the network, therefore minimizing certification cost. In fact, the plan is to offer a new NMEA 2000 PC “Approval” status for a measly $100. Any company could make and certify such a gateway and Maretron tells me that it might eventually make a second model that would be less expensive because it would not also offer NMEA 0183 translations. I’m hoping that all this means that small operations could, say, develop performance sailing software or conning screens using the same data that’s flowing to those new Furuno instruments…or who knows what! There’d still be an issue for small developers, though, which is the high cost of the documentation that details the NMEA 2000 standard messages. I get why NMEA charges a lot for certification—it finances the certification tool itself as well as the maintenance and ongoing development of the Standard. But I know I’m not the only person who thinks the whole excellent concept would move along faster if the documentation was freely available. I’m going to try and make that case to some of the folks who make these decisions, but could use your help. Please, if you have an interest, write a comment on this subject. Thanks!
PS, 10/20: Well, I didn’t really look at the documentation prices when I linked to that NMEA page above. They’ve been debundled, and NMEA makes a pretty good case that getting into N2K is feasible for even a small developer, especially now that some testing houses are able to do the certification. NMEA officials also told me that the Intelligent Gateway is for real, and Maretron just submitted the first gateway for final certification. The “Approval” cost will be more than $100 but hasn’t been set quite yet. At any rate a small software developer wanting to explore N2K might only need a Gateway, a $325 NMEA Trade membership, and the $495 electronic Database of PGN details to get started. More on this as I learn more.
Check out the full size screen shot. I took it here at my desk while designing a custom screen for Maretron’s N2KView monitoring and control application. I was picturing myself the master of a high-end cruiser putting together the screen I’d like to have accessible anywhere on the boat—and off it—when anchored. Which is completely possible, given the concept at work here. In fact, the data you see is real stuff coming out the lab’s NMEA 2000 network, through a Maretron USB Gateway into the lab laptop where it’s being packetized and served into my home network, in this case via WiFi. Zounds!
I’m not sure what Raymarine’s rational is for creating its own proprietary NMEA 2000 cabling system, though I’ve been studying the brochures and manuals available (on Ray’s nicely updated site). Aside from the small diameter (11mm) of the connectors, the features touted in the ST70 brochure—“rugged and waterproof”, “quick and easy” install, etc.—are similar to the DeviceNet cabling NMEA tried to impose as a standard physical layer.
In addition to the tank/rudder adapters I tried, Maretron sent over some new cabling parts of interest. Let’s check out the big picture, starting with the four way tee at lower right. It’s quite like the Double T that Lowrance recently introduced—though obviously better made (metal threads!), and probably more expensive—and it’s obviously useful in tight areas where you want to tee off numerous sensors and/or displays. To its left is a possibly more valuable inline terminator.
