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:
Check out the full size version of this Coastal Explorer (aka Maptech Chart Navigator Pro) screen. It shows how useful the Nauticast B AIS transponder was during the Bermuda-to-Maine passage, and suggests how it might have played a critical role. You can see that we’re just coming onto the continental shelf. It was no surprise that we drove right into a classic Georges Bank blanket of fog, but reassuring that the Nauticast B’s dual receivers picked up the Sealand Atlantic at about 25 miles, more so knowing that we were going to pass ahead of it with a wide CPA. Visions of Johanna’s 4kw open array Furuno NavNet radar didn’t pick up the ship (bow on) until about when this screen was made, and it wasn’t even a large target when broadside 10 miles astern. Had we been 10 miles further back on our track, and without AIS, the crossing might have been nerve wracking.
6/28 I’m now ashore and able to upload this shot of Malcom Willard showing off a three-meal dolphin on a lake-like Atlantic ocean. It was taken on Tuesday, a few hundred miles south of the Gulf Stream. I didn’t manage to get the text below online until Wed. afternoon. Note that no electronics played a part in the fish’s demise:
Note to self: If I ever get to try this again---posting a Panbo entry from offshore with a sat phone---
As hoped for, waiting in Bermuda was an ACR Nauticast B Class B AIS and, happy day, I got it installed and working without a problem. In fact, I’m really impressed with the detailing—packaging, cabling, instructions, etc.—and also the variety of ways you can set it up. I’ll discuss all, not to mention how it works underway, when I have more time. Right now, I’m just going to use my last high speed connection for a while to put up some pictures. The hardware one above is bigger here
, and the software that comes with, below, is bigger here. I do have the Iridium/Xgate email working (nice!) but xWeb still eludes me, and so may not post again until we reach Rockland.
That’s Skip Strong making his way down Nor’easter’s twisty pilot ladder, as seen from the bow of the Penobscot Pilot. Man, that move must get the adrenaline pumping, say, on a dark night with a big sea running. (Capt. Ryan told me that they can manage a ladder like this in up to about eight footers, sometimes getting the ship to turn toward the ladder and using the flatter turbulence created inside the turn). At any rate, Strong, who is a bit of a geek (and I mean that in a good way) has quite the electronics in that bag he’s toting.
I’m way behind on work, not to mention the gizmo preparation, that needs doing before Bermuda (wow, Bill and Gram were fifth over the line and third in class corrected), so I’m turning it over to Milt Baker. These snippets are from today’s noon report, filed from almost the midpoint of the Med Bound 2007 Bermuda-Azores leg:
Ships are few and far between out here. We nearly always pick them up on AIS before seeing them on radar. Moana Kuewa (which has the same Furuno FA-150 AIS unit we have) clearly has the best installation {not trivial} and picks up the ships first every time, sometimes as much as 20-30 minutes before they show up on the AIS units aboard Salty Dawg and Bluewater.
Not only did I get up on Mt. Battie yesterday and take that new header picture of a more June-like Camden Harbor (remember the old November one?), but I got down the Bay last Friday, catching a ride on the Penobscot Pilot. That’s Captain Jane Ryan and I above, and bigger here , just after she’d smoothly maneuvered alongside Nor’easter to pick up pilot Skip Strong (who snapped the picture). I’m wearing the float coat and harness because I’d been out on the bow shooting Skip’s descent down gangway and ladder, and because Jane runs a very safety conscious operation (with very good reason).
1. Apparently the HF transmitters the USCG uses to send out offshore weather forecasts—voice, fax, etc.—need to be replaced and the government wants to know if it’s worth the money. If you use SSB or HAM for NOAA weather, or ever plan to, you might want to look here for ways to speak up. (I managed to find the electronic comments the other day at http://dms.dot.gov/, but can’t get there today).
2. Yesterday the FCC issued a request for comments regarding the granting of waivers so that USCG approved Class B AIS transponders can be used in the U.S. while the Agency works on a final rule making. The FCC’s online search and comment software is also clunky, but try going here to make comments, and look here to review them (nothing so far, but some interesting older stuff, like Orbcomm’s interest in providing satellite AIS tracking). In both cases use Proceeding # “04-344”.
From the minutes of the 5/10/2007 GMDSS Task Force meeting, summarizing one portion of the FCC report:
Pending approval of AIS Class B Units: The Coast Guard has approved 4 AIS Class B Units and those same units are expected to receive routine FCC approval which has not yet been released, however.
Y-tronic just introduced a slick looking combo GPS and tuned AIS antennas meant especially for Class B transponders. Y-tronic is also showing the Trueheading Class B as FCC approved. I wish that was true but think it’s a mistake based on SRT’s pulled-back approval. I still don’t know what’s up with the FCC and Class B; anyone?
Meanwhile, the new Barcelona World Race (two-handed non-stop round the world…exciting) has amended its Notice of Race rules to permit Class B in lieu of Class A transponders. Interestingly, a racer must use AIS in the Med, around the Horn, and within 50nm of the gates, and use is “recommended at other times when ships may be encountered”. (Thanks to Adolfo at Atlantic Source for this!)
And Fred Pot at SeaCAS continues to improve his line of high quality true dual-channel AIS receivers, what with direct connect cables for Raymarine and Furuno plotters, a powerfully spec-ed multiplexer (below, built by Actisense), and now a significant price cut on all three receiver models. But Fred’s pretty leery about Class B, as expressed on his FAQ page. I share many of those concerns, which I summarized in a March PMY column. However, I do question Fred’s assumed 4nm range for Class B. I’m hearing better from Europe, though I haven’t heard much. I’ve got a nice apple for the first company that can loan me a U.S. approved Class B transponder to try out!
