TV-14 | | Action, Adventure, Sci-Fi
A "Wolf's Call' is a navy slang for active sonar alarm. That means the submarine is detected and targeted. Active sonars sound very different to the human ear based on the transmission frequency. Low frequency sonars are a very deep, like a moaning bass. Medium frequency sonars are like some synth doing an imitation of whale songs. High frequency sonars are strident and creepy like "howlings".
The human beings come in three kinds: the living, dead and those who go to sea.
The "Iranian" ship is actually an Independence Class Littoral Combat Ship in service with the US Navy, and the helicopter that takes off from said ship is a Chinese Z-10 Attack Helicopter.
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