[s4e16] Silent Service -

: 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.

The atmosphere on the submarine is tense. Chief Petty Officer Basilio warns Mac and Harm that the boat is "spooked," as crew members keep getting sick or injured under mysterious circumstances. The investigation reveals a chilling pattern of sabotage: [S4E16] Silent Service

The The Silent Service on Prime Video.

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In the episode " Silent Service " (Season 4, Episode 16) , Commanders Harmon Rabb and Sarah "Mac" MacKenzie are dispatched to the USS Watertown , a Los Angeles-class nuclear submarine, to investigate a series of alarming "accidents" and sudden illnesses that have plagued the crew. The Story Aboard the USS Watertown : Investigating the sudden illness of the navigator

The where Gibbs and Bishop deal with a radio-silent submarine . The investigation reveals a chilling pattern of sabotage: