A self-contained deep-water gamma-ray spectrometer on the basis of a high-p
urity germanium detector is designed for the radionuclide monitoring of rad
ioactive waste burial regions and wreck sites of nuclear-powered ships and
submarines. Technical data of the spectrometer are considered, and the resu
lts of measurements of its sensitivity for detection of typical natural and
man-made nuclides in seawater are presented.