Bathymetric Survey

What is bathymetric survey means? I just google it and found that bathymetric is a study of under water depth of lake or oceans floors. Meaning that bathymetric is the underwater equivalent to hypsometry or topography. 

Three Vertical Synchronous Generator Navizence Hydropower Plant

Navizence Hydroelectric built in 1908 in Chippis. 

Three Vertical Synchronous Generator Navizence Hydropower Plant

Output: 3x26.5MVA

FMG SA

Switzerland