[s4e16] Silent Service ◆

The where Gibbs and Bishop deal with a radio-silent submarine .

I can also tell you about:

: A crewman is killed when a high-pressure steam pipe fails—not due to age, but because it was precisely nicked with a scalpel.

: Investigating the sudden illness of the navigator and conn officer, they discover the morning meal was spiked with syrup of ipecac, forcing the sub to surface dangerously in the middle of a civilian regatta.