re: Captain faces 10 years in jail for fiery deaths of 34 people aboard California scuba boat

Trying to understand the charge against the captain.

quote:

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On November 6, 2023, the captain, Jerry Nehl Boylan, was found guilty of one count of misconduct or neglect of ship officer, colloquially known as "seaman’s manslaughter".

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Is the basis of the charge that he was in charge of the boat & crew and they did not have a "roving patrol" while the rest of the passengers were sleeping? And even though it appeared to be a companywide practice to not have one, the captain is required to be knowledgeable of the regulations and therefore is criminally liable?

Also, from the wiki page, it appeared that not having a roving patrol was standard for that company, I am surprised they were able to limit their liability to the value of the vessel after it sank, $0 USD