Possibility of using satellite-based detector for recording the Cherenkov light from ultrahigh-energy extensive atmospheric shower penetrating into ocean water

Various components of Cherenkov radiation are calculated which occur during development of a shower with a primary energy of 1020 eV above the ocean surface. It is shown that, under conditions of the TUS experiment, a flare of the reflected Cherenkov photons at the end of the fluorescence track can be identified in showers with zenith angles up to 20°.