At the time of the Covid-19 outbreak on the ship, the Diamond Princess had satellite 5G technology called O3bm, which is a network of 20 satellites, which enables wireless communication technology, apparently at the frequency of 29 GHz.
For more info please check link below :
https://alchemistcook.blogspot.com/2020/05/the-potential-dangers-of-5g-radiation.html

Dead birds on Spanish cruise liner - for more info read on link below :
https://strangesounds.org/2020/04/birds-dead-cruise-ship-video-sky.html