I just re-read the article. The article never says what the captain tested out at, only that it was a violation of Federal Maritime law to operate with over .04 level of alcohol. He could have been .04 or .1. In any event, as a ship's captain he had to know the law. Violation of Federal laws is a pretty quick ticket to losing your job, or the White House, if you're a democrat.
If he had just taken an Ambien and laid down for the night, he'd be OK. They might not have nabbed him for sleep-sailing if he didn't crash into anything.
"docked" in Seattle , This is the part that gets me. If the Vessel is docked, How can he be charged?
Is a captain on duty 24 X 7? Is he not allowed to have a glass of wine if he's off-duty and will be off duty for the next 3 or more hours?
The article doesn't provide enough data to know much of anything other than he was nailed for something. I would assume there was a valid reason, but still the article doesn't say much.