This bit of fiction has a historical basis. Let me tell you the facts that led to inspiration, leaving out any theories of conspiracy or cover up. First, the Soviets lost a nuke sub known as K-129 in March 1968. The US wanted to find it of course and study it. With the help of Howard Hughes the CIA got a special ship built named USNS Hughes Glomar Explorer. It was publicly a deep sea exploration vessel but underneath it was a sub retrieval vessel for Project Azorian which was the CIA effort to retrieve the K-129. They did retrieve the sub and bodies to which they gave a proper funeral, the video above. Once whatever was retrieved (sources vary as to what they got) the boat was mothballed for many decades.
With this being fact I thought what if in the retrieval the ghosts of Soviet sailors started taking over the ship? What if one person who was sensitive saw them first but eventually all see them. They try the funeral but it doesn’t do it. The men’s souls have spent enough time in the sea and want the ship. The ship goes home gives up the retrieved intelligence and then the boat is mothballed to give it over to the ghosts. THAT is the story I told and here’s a part of it.