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  1. #1
    Join Date
    Apr 2014
    Posts
    93

    Question NKE Ultrasonic Log

    NKE have an ultra sonic log on their website.

    https://www.nke-marine-electronics.c...-speed-sensor/

    Does anyone know when/if it will be availabe to buy?

  2. #2
    Join Date
    Mar 2005
    Location
    hampshire, uk
    Posts
    955

    Default Re: NKE Ultrasonic Log

    an will it be compatible as a replacement with existing airmar logs?

  3. #3
    Join Date
    Jul 2015
    Posts
    1,609

    Default Re: NKE Ultrasonic Log

    Airmar seem to have been messing around with similar products for some time, I think this is their latest effort - https://cdnkey-bb0b.kxcdn.com/images...02_12_2018.pdf . However they seem expensive and there are few reports of their performance in use that I can find.
    Last edited by Elecglitch; 29-03-19 at 10:40.

  4. #4
    Join Date
    Dec 2002
    Location
    Gloucestershire
    Posts
    5,234

    Default Re: NKE Ultrasonic Log

    B&G gave up years/decades ago. I can't remember the reason.
    I'd rather be naked
    www.mastaclimba.com

  5. #5
    Join Date
    Apr 2014
    Posts
    93

    Default Re: NKE Ultrasonic Log

    Any NKE dealers on here?

  6. #6
    Join Date
    Nov 2007
    Location
    Kingdom of Fife
    Posts
    6,059

    Default Re: NKE Ultrasonic Log

    Doppler sonar logs have been around for a long time but have never been successful in the leisure market for some reason despite being theoretically very accurate. I used to sell commercial marine ones in the 70s and they were very accurate. NASA were the first to sell leisure ones based on a doppler pipe flow sensor. They seem to have problems with them because they stopped selling them. I see from the Airmar data sheet they are also offering EM logs. We used them in submarines and they were pretty accurate but needed many measured mile runs to calibrate them
    Peter

  7. #7
    Join Date
    Apr 2009
    Posts
    1,723

    Default Re: NKE Ultrasonic Log

    Airmar have made the ultrasonic CS4500 log for many years. I don't know why more people don't use them. I've had one for six years and I'm happy with it. It seems more accurate than paddle logs and is vastly less affected by fouling. It does get confused by murky water sometimes, but this is not a big problem. Small faff to install in an N2K network because it outputs the old pulse signal, which has to be converted to 0183 with an Actisense box, which has to be converted again (in my case, via the 0183 input on my Zeus plotter), and it's relatively expensive, but for me it's been well worth it.

  8. #8
    Join Date
    Nov 2007
    Location
    Kingdom of Fife
    Posts
    6,059

    Default Re: NKE Ultrasonic Log

    Quote Originally Posted by Dockhead View Post
    Airmar have made the ultrasonic CS4500 log for many years. I don't know why more people don't use them. I've had one for six years and I'm happy with it. It seems more accurate than paddle logs and is vastly less affected by fouling. It does get confused by murky water sometimes, but this is not a big problem. Small faff to install in an N2K network because it outputs the old pulse signal, which has to be converted to 0183 with an Actisense box, which has to be converted again (in my case, via the 0183 input on my Zeus plotter), and it's relatively expensive, but for me it's been well worth it.
    Quick question is it water lock or bottom lock or can it be switched between the two.
    Peter

  9. #9
    Join Date
    Aug 2011
    Location
    On the Celtic Fringe
    Posts
    13,982

    Default Re: NKE Ultrasonic Log

    Looks a bit like the garmin one. Which is available to buy.
    Cynical Scottish almost retired engineer.

  10. #10
    Join Date
    Oct 2001
    Location
    Surrey & boat in Dorset. Both have pubs
    Posts
    3,692

    Default Re: NKE Ultrasonic Log

    We had a Seafarer doppler log back in the 70's. Had to keep the screws clean so that it worked.

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