A common question I see around here are new users wondering if NETMF is used in commercial projects. We’ve been using the platform for 4 years now. For our latest product, a G400 is running the show.
During my days working in the ROV industry we used to do a sounding profile with a temperature conductivity probe that was deployed over the side of the ship as we sat on DP. It was battery powered with internal recording. The data was recovered once the probe was back on the surface. Seabird or Valeport I think was the 2 units I still remember us using.
I assume your unit actually captures the data in real time and you lower and raise it as you move the vessel along, thereby getting sounding data for more than one spot?
@ njbuch, @ Dave - The system drops and recovers a probe down to some user-defined target depth, recording data all the way down, while the vessel is moving. The cool part is the line tension monitoring system, where we quickly modulate the speed of the spool (speed up or slow down) to ensure that the line tension is always very low, so that no forces/disturbances are actually pulling on the probe, even as the vessel is heaving or pitching on the surface due to waves, swells, propulsion, and other environmental disturbances. The system ensures that the probe is isolated from external forces, so that its motion through the water is effectively a vertical freefall. Then we recover the probe and transfer the data wirelessly once it breaks the surface. The vessel never has to stop, where, historically, it typically had to for this kind of measurement.
You are right, we always had to stop. With a DP vessel that is not a big issue but for non DP I can image you would need to keep it moving to stop the vessel turning into the sea or weather.