Comment on 60 Years Ago, a Submerged Submarine Circled the Globe for the First Time (2020)parentComments−nocoiner1moThey can trail an antenna behind the boat underwater that receives low frequency radio waves carrying short signals that basically tell them to come up to a higher depth to receive a longer message.
Comments
They can trail an antenna behind the boat underwater that receives low frequency radio waves carrying short signals that basically tell them to come up to a higher depth to receive a longer message.