a ship to ship transmission reveals that one boat is azimuth 313 and 88 nautical miles from a buoy we can't identify, but he also sends weather data and time which both suggest they are in the southern half of the red sea.
(updated 19 May 2021)
Further analysis of this transmission reveals a position about 120nm north of Nora Island. See link for more info on Nora Island.
https://thearabweekly.com/it-moves-closer-eritrea-egypt-eyes-military-base-nora-island