The MIDAS SVX2 is the latest version of Valeport's unique instrument.

Recognising the conflict faced by users requiring the superior Sound Velocity data from an SVP, but still needing the Salinity and Density data from a CTD, the MIDAS SVX2 combines both technologies to give the best of both worlds.
 
Now fitted with a 0.01% pressure sensor as standard, the SVX2 also uses synchronised sampling to ensure perfect profiles, and since the digital time of flight SV sensor is the most accurate in the world, it's also possible to compare the true sound velocity data with that generated by commonly used equations.

You may also be interested in looking at products in these associated categories:

Sound Velocity
Echosounders and Bathymetry
Ocean Engineering