Sailboat Instruments

Even if an electronic compass has been meticulously calibrated on land in a non-disturbed magnetic environment, it will need additional cali...

I understand that the Raymarine ST1000+ autopilot (and the similar ST2000+) can receive exterior heading data through the SeaTalk bus, speci...

A first 3 MHz transducer prototype is ready for testing. A vintage Airmar ST200 speed transducer housing has been modified to receive the pi...

Here is the conceptual design of the 3-MHz ultrasonic transducer. Apart from the piezoelectric element, the 2 important design parameters ar...

With a pulse-to-pulse coherent Doppler profiler, we can pick a specific remote region where we want the measurement to be made. Here we plan...

Here is a preliminary diagram of the prototype profiler that I plan to build. I intend to modify an existing depth transducer, replacing ...

It is possible to measure directly the lateral speed through water of a sailboat making leeway, by using a pulse-to-pulse coherent Doppler p...