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0688-SOM-00001, Rev: 02 © Tritech International Ltd.
Appendix B
B.1. Depth Derivation
The Bathy V7 uses its ARM processor to carry out the various calculations required to derive depth, salinity, density,
VOS, and altitude. This allows the V7 system to operate in a completely standalone mode, as opposed to the V3
system that requires the use of Seanet/Desktop PC to derive the above outputs.
The V7 system offers operators to select from a list of industry standard algorithms for deriving both Depth and
Velocity of Sound.
This following section lists the formulae (used internally) to derive those output values.
B.2. Default Depth Equation
B.3. Gravity Formula
B.4. Alternative Depth Equation
(International Association of Geodesy, Sp.Pub.Bull Geodesy 1970)
Where g(), the international formula for gravity, is given by:
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