Airmar H2183 Improves Situational Awareness Feature on Raymarine

20 Responses

  1. David Marchand says:

    The red/green/blue lines on the Raymarine’s display are nothing new. The Airmar transducer just makes them more accurate.
    I used a 2-3 year old Raymarine C80 chartplotter with conventional paddle speed transducer for a 3000 mile trek from Florida to Maine and back to Annapolis this year. This was on a 6 kt sailboat, so current sometimes had a noticable effect at that slow speed.
    Most of the time the red/green arrows were within a few degrees of each other and I didn’t pay any attention to the difference, other than knowing that the green COG indicator was the one to watch to keep the boat in between the bouys.
    But on a few occaisions it was significant. One was particularly memorable as entering the Cape May, NJ jetties from Delaware Bay, I was against a 3-4 kt cross current. In that situation, the two arrows were 40 degrees or so apart. Having the guts to hold a heading that was way, way off where I wanted to go was tough, but the display gave me the information I needed, immediately and without having to wait to watch my visual COG develop.
    So, I guess my point is, this technology has been around for some time and is sometimes very useful. Keeping a conventional paddle tranducer calibrated helps. The new Airmar transducer will only make it better.
    David

  2. ScottE says:

    All those vectors are really useful, however they aren’t anything new per-se. My C70 using an old Autohelm Autopilot for a fast heading sensor and ST50 water+wind speed does all that too…
    My point? you don’t need all the fancy+latest stuff to do this! It may be that your electronics are not fully integrated, or maybe they are and it’s simply that nobody ever turned on the options in your MFD.

  3. Bill says:

    Hi Dan
    For those of us who use Raymarine E series and demand that the data presented be accurate your research is very informative.
    You are using an Airmar PB200 which has it’s own heading sensor, is the H2183 necessary? How accurate is heading from the PB200?
    Did you ever try Raymarine’s Smart Heading sensor? This is what I have and have not been happy with it’s accuracy. As you pointed out an error of just a few degrees will make set/drift completely inaccurate and also effect radar/chart overlay.
    I would love to have the vectors displayed as you show but only if they are good information. As of now I only use the COG arrow. I will have to decide if the cost of the new transducers is worth the accuracy.

  4. Joe Ferrara says:

    Dan,
    I’ve had a number of years with my Raymarine E120, and its connection with the S2G (and later with the X30) course computer has given me very good and accurate results. Have you had an opportunity to compare the accuracy between the H2183 and your S1G? Depending on your application, you might need to multiplex the fast heading output with any other data you have going in on the E’s one NMEA 0183 input.
    Joe

  5. Dan Corcoran (b393capt) says:

    Bill asks “Did you ever try Raymarine’s Smart Heading sensor?”, yes, that is what I am comparing it to in this article.
    Joe: I have compared autopilot performance of the S1G with and without the H2183 as a substitute for the fluxgate component, both in follow the compass and follow the wind mode. I hope to write about it next year.
    Joe: If by accuracy do you mean compared to a handheld compass, the H2183 is far superior. If by accuracy do you mean that one product keeps your boat in a straighter line while traveling under autopilot, I would say there is no difference that appears on my charplotter using the track feature. For example you autopilot might misreport the compass heading by 3 degrees, but you otherwise stay in the straight line you selected when you press the AUTO button.
    From a MARPA point of view, where a few degrees of magnetic error dosn’t matter I could not tell the difference between my smart heading sensor enhanced fluxgate and the H2183. Either source enables you to hold onto a target much much better than a standard fluxgate as you turn your boat.
    ScottE: Actually my electronics are very integrated, but sure the arrow vector feature has been around at least 8 years that I can remember. The poin in the article above is that it was ahead of it’s time since tiny errors in heading (and speed also) render the current vector arrow useless. Click on the link within the article above ending in “blue arrow useless”. It takes you to a screen capture that should be familiar, the blue arrow incorrectly showing the current coming from improbable locations like beaches and bulk heads with just 3 degrees of heading error.

  6. Bill says:

    Dan:
    How do you get such nice screen shots?
    Is H2183 more accurate/faster then PB200 heading?
    Bill

  7. Adam says:

    I actually think it’s great when software developers (that is, the guys writing the MFD code) anticipate the possibilities of their platform even if the sensors aren’t yet accurate enough to take advantage of the feature. Sensors *always* get better, as we’re seeing this cycle with the H2183, PB200, CS4500, Furuno SC30, etc.
    And on that note, what other nav platforms — particularly PC-based ones — can display similar current and wind overlays? I just went through the Navnet 3D manual and neither the MFDs nor MaxSea seem to. What about RP CE, Nobeltec, or the new Simrad MFDs?
    /afb

  8. Scott E says:

    Dan, Sorry – by “you”, I didn’t mean to suggest that you specifically – I just meant that in a more general sense as I’ve found many boats (including mine when I bought it) that has a bunch of systems that can all talk common protocols, but which were never integrated, or at least not fully so.
    A fast and accurate heading sensor is definitely important – and a lot of people already have one but don’t even know it! Autohelm/Raymarine autopilot computers will output heading on NMEA0183 at 1Hz. This should be sufficient for radar and drift vectors. Of course if you are lucky enough to have newer protocols and systems, then that’s certainly better!

  9. Dan Corcoran (b393capt) says:

    Bill: The motion corrected wind on the PB200 is still A+++ in my book but the heading and GPS SOG/COG suffers a bit when the mast moves.
    The H2183 has more axis of motion correction (3 axis) than the PB200’s compass has (1 axis), so they are not that comparable.
    Airmar has a new version of the weather station on the way that will place the H2183 compass technology in the weather station making them equal.
    Until I test I won’t know, but potentially the new weather station will then be identical to the H2183 if 50 feet of mast dosn’t matter, and could be better as it will be seperated from all the metals in the boat.
    Although the H2183 is so good I can’t tell that engines, speakers or other things on my boat matter a bit, a few things do affect it on my boat including a bottle of SailKote (a “premium” marine lubricant affects my H2183 (iron shaker balls maybe? Idiots !), as does Corrosion-X, and on one day the contents of my crews backpack. All three wouldn’t be an issue if the compass is on my masthead.
    For my fluxgate compass, I had to move that from it’s original position years ago as it was installed 12 inches from battery cables that fluctuated enough in magnetic field when the fridge cycling on/off to cause my autopilot to turn 3 degrees.

  10. Adam says:

    So to (hopefully accurately) answer my own question above, after the best review I could muster using available information — Rose Point and Jeppesen do not, unbelievably, publish their latest manuals online — it seems that none of the major PC charting programs can display current vectors, and wind vectors look doubtful as well.
    Would love to hear from the publishers or from users of the latest versions of Nobeltec and RP CE whether that assessment is correct.
    /afb

  11. Ben Ellison Ben Ellison says:

    Coastal Explorer can put a wind rose around your vessel icon, Apparent or True, I think. Very few charting programs, or MFDs, calculate Set & Drift, let alone draw the vector. I’d guess the reason is that super accurate sensors are needed to make the calculation worthwhile. Raymarine has seemed more daring in this area for a long time.

  12. HenryD says:

    Ben,
    I am looking at the PB200 to put wind/weather on a PC that will also be running Rosepoint. I am not clear from the above postings – the PB200G – is that the updated version or do I need to wait for the new features that the H2183 has?

  13. HenryD says:

    Ben,
    I should add on the above posting – it is not for a sailboat, we have a trawler.

  14. Richard C says:

    Last month I sailed from Northport, NY to Annapolis with a new H2183 and found a vast improvement in the straight line tracking of our ComNav, ComPilot autopilot. Instead of using the very primitive fluxgate compass that came with the autopilot I disconnected it and used the 0183 output from the H2183. One of the nice features of Airmar’s compass is the simultaneous, dual N2K and 0183 data output. This reduces the confusion of receiving slightly different HDG from different compasses. With only one HDG source I get the same data on the Garmin 4212, ComPilot, Laptop with Coastal Explorer and GMI-10. Now, if I can only get the binnacle compass to agree all would be perfect.

  15. Ben Ellison Ben Ellison says:

    Henry, I don’t know why some outlets call the PB200 a PB200G, but they seem to be the same thing. I don’t think that Airmar has yet introduced a PB200 with a 3-axis rate gyro.
    I’ve used the PB200 for wind, heading, and GPS with Coastal Explorer and many MFDs (radar overlay and MARPA), and it’s worked well (as long as you don’t put it in the beam of a magnetron radar ;-). Maretron’s ultrasonic weather station and solid state compass, and many NMEA 2000 GPS sensors, also work well, and act like an all-in-one when on the same network.

  16. Dan Corcoran (b393capt) says:

    Nobody asked me about the weather screen.
    That is a nearly live doppler image, updated every 5 minutes, and includes the direction and speed of storm cells, plus the red/blue line locating the front (updated every hour I think)
    The weather forecast for the afternoon I took the screen capture was wet with t-storms, yet the day was beautiful as the forecasted rain stayed west of our position until well after 7pm. With the help of the Sirius weather feature I enjoyed the afternoon on Long Island Sound while most everyone else wrote off this weekend day and stayed off the water.
    Although at the level of zoom its hard to see, I was arriving in very light rain with perhaps half an hour before the heavy stuff (note lightening icons and darker colors) moving from South to North arrived. I had a similiar display on my cell phone of the rain but could not make a similiar determination as to when the rain would arrive in my location without the boat icon offered on Sirius. While on a clear day you can pretty much guess your location on the cell phone, that’s not the case on a stormy day as the map features on most weather products are blot out the .

  17. Jim McGowan says:

    Somebody asked about screen captures.
    All Raymarine A, C and E and G-Series systems (new widescreen and classic) have the ability to capture a screen image onto the inserted CF card.
    Press and hold the data key in for a long press (about 2 seconds.) The unit will beep and the screen will freeze momentarily as is writes a bitmap (BMP) file onto the card. They are named and numbered sequentially DUMP001.BMP, DUMP002.BMP, DUMP003.BMP, etc.
    You can then use your home computer and a CF reader to retrieve the images off of the card. This works in any mode, except for video inputs.
    And yes, it can write bitmaps onto your inserted Navionics Chart Card (or any other inserted CF card.) If you do it to the chart card understand that you are doing so at your own risk! When you put the card in your PC, be careful what files you move from the card. If the file name does not start with DUMP, don’t move it!
    Also, if you happen to do the long press and get a quick multi-beep, the display is telling you that your CF card is full.

  18. DDW says:

    Maybe slightly off topic, but: does anyone know if a Raymarine E series, connected to an X30 pilot via N2K (or Seatalk ng if you must), eliminate the need for the fast rate heading 0183 connection? There is no illumination of this in RM’s literature at all, and the tech support staff here in NA don’t seem to know anything about it.
    You would think that heading data could be passed much faster on the N2K bus than is possible on 4800 baud serial.

  19. Scott E says:

    Jim, I don’t have an answer for you about N2K/STNG but yes, there can be issues with fast heading sensor data on NMEA0183 at 4800bps. Fortunately there is a solution, which is to use a MUX that can do bitrate conversion. This is what I do with my C-70. All NMEA sources are fed via a Brookhouse MUX which has a special 38400bps loop on it and baudrate conversion and filtering.
    This particular MUX has some very nice filtering features as well – for example I use it to convert SeaTalk from my ST50 instruments to NMEA0183, but due to bugs in the C-70 software (acknowledged by Raymarine, but won’t be fixed), there are problems if certain sentences comes in both from NMEA0183 and SeaTalk. With a filters on the MUX, it will disable SeaTalk-NMEA0183 conversion if the C-70 is powered up (which does it’s own conversion). This way I always have ST50 instrument data on my NMEA0183 bus, and the C-70 doesn’t freak out.

  20. Scott E says:

    Whoops, due to an off-by-1-error in reading previous posts, my comment was for DDW. Sorry 🙂

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