Mr. Monk Is Underwater - S7-E5
Factual error: Commander Whitaker tries to drown Monk and Natalie by trapping them in the ballast tank of the submarine. The ballast tanks on a submarine are inaccessible from the interior, and wouldn't have dramatic lighting in them either.
Mr. Monk Is Underwater - S7-E5
Factual error: Monk borrows Lt. Albright's sidearm to prove a point. All weapons on a submarine are locked in a small arms locker until needed, not carried around by officers. Further, medics are traditionally not issued firearms.
Mr. Monk Is Underwater - S7-E5
Character mistake: Commander Whitaker asks what Monk and Natalie are doing on his "ship." No submarine commander would ever refer to his vessel that way. He would refer to it as his "boat."
Mr. Monk Is Underwater - S7-E5
Factual error: The standard issue pistol for the US Navy is the 9mm Beretta 92F, not the Walther P38 as shown.
Mr. Monk Is Underwater - S7-E5
Factual error: Lt. Albright shows Monk and Natalie the "USS Seattle", a "Class 4 Submarine". US sub classes have names, not numbers, so she would be Los Angeles, Seawolf or Virginia class.
Answer: The two men are trying to work out a secret deal between them without involving the union, which means the workers' interests aren't being represented and defeats the whole purpose of a union. The mayor would lose labor's support and Cusack's union troubles would just be starting.
Captain Defenestrator