Great article Ben. I never thought to do this (monitor dew point temp) with the Airmar.

BTW, any calibration requires multiple attempts with the boat moving to determine the next adjustment. The screw method can involve multiple attempts and some fustration. Be sure to epoxy when you have it just right, so your setting is not lost.

Hi Mantas, I’m the other Ben but have tested ultrasonic wind sensors from all three brands (and LCJ Capteurs’). All seemed accurate and long lasting, except that the Maretron design is somewhat fragile if, say, stressed by aggressive shrink wrapping.

But I agree with Dan that it’s quite hard to orient a wind sensor precisely to a boat’s bow for max accuracy, so you might check if your MFD or instrument displays support an offset correction for incoming wind direction info. Or consider pairing the WS0200 with a Maretron display, which can do deep configuration and a lot more. For instance, the WSO also senses barometric pressure and relative humidity, and so a DSM can show both and also calculate Dew Point.

Meanwhile the Airmar 110WX also has pressure, with humidity optional, and configuration may be supported by some displays, though it’s more expensive than the others. I went on about Dew Point (and N2K config details) here: https://panbo.com/monitoring-dew-point-temperature-at-your-helm-why-and-how/

I had the opportunity to evaluate an early version of the Calypso a few years back, I can speak to mounting the Calypso on a sailboat.

The sensor should be mounted well above the masthead with an extension pole as pictured here with the Airmar ( https://panbo.com/sailing-with-an-airmar-pb200-part-ii/ ). Aligning the notch on the sensor requires a near impossible sighting to a line you draw on the extension pole, plus getting the extension pole itself facing perfectly forward.

The Calypso is far simpler than the Airmar. The Calypso won’t tolerate any rotational error as there is no calibration input in either the android app or the NMEA-2000 gateway. I compensated by making the base of my extension pole adjustable with a set screw going through the threads, as my bosun chairs did not support reaching up to the sensor at the top of the extension pole.

Another solution is to look to your MFD or instrument displays to take a wind calibration input, however some systems will only calibrate for wind sensors of the same vendor.