Well, it depends on the specific story. Some 'phantom submarine' tales might be based on real submarines that were involved in covert operations. For example, during the Cold War, both sides had submarines doing secretive patrols and surveillance. If one side detected an enemy sub briefly and then lost track of it, it could be called a 'phantom submarine'. So in the context of a true story, it might be a real military sub.
A really cool submarine book is 'Voyage to the Bottom of the Sea' by Irwin Allen. It has a lot of exciting adventures and scientific exploration as the crew of the submarine Seaview faces various threats and mysteries. It combines action, science, and adventure very well.
It could be a lost or abandoned submarine. Maybe it was part of a military experiment that went wrong, and it's now drifting around, appearing and disappearing like a phantom.
Sure was! TMNT originated as a comic. The comic introduced the characters and their adventures, which then led to its success in different forms of entertainment. The original comic had a significant impact on the franchise as a whole.
The Kursura submarine's real story is quite remarkable. It was built with specific military purposes in mind. Over the years, it participated in various military operations and trainings. After being retired, it became a popular tourist attraction, allowing people to get a glimpse of what life was like inside a submarine during its era. People can explore the compartments, see the equipment, and learn about the submarine's role in the military. It's a great way to preserve and share naval history.
They also tend to explore the psychological states of the characters. Being isolated underwater for long periods can have a big impact on the mental health of the crew. In many submarine novels, we can see how the characters deal with stress, fear, and the monotony of life inside the submarine, while also having to perform their duties efficiently.