McGlashan was 33 years old.
No cause of death or further information has been provided and his death is currently under investigation.
Discovery, the local network in its series, released a statement to CNN.
“Our deepest condolences go out to Nick’s loved ones during this difficult time,” said the statement. “Nick came from a long line of crabbers and was known for his great knowledge. He also had a keen sense of humor, even in the most difficult conditions. He will be deeply missed by everyone who met him.”
The program chronicles the lives of crews working on fishing vessels in the Bering Sea.
Born in Alaska, the son of a veteran commercial fisherman, McGlashan started working on a boat when he was 13.
“He was named after his great uncle Nick McGlashan, who worked on the first boat that was rumored to be the pioneer in the United States crab industry, the F / V Deep Sea, built in 1947,” says the biography. “Two of Nick’s aunts were also crabbers; one was lost at sea when the boat sank in 1986.”
McGlashan worked as the deck chief on “Deadliest Catch” and has been on the series since 2013.
McGlashan wrote that he had abused alcohol, heroin and methamphetamine, overdosed three times before going into treatment in September 2016 and sobering up.
“My life went from being a badass in Bering Sea to a fully developed drug addict very quickly. Hidden from me was that passion I had for life,” he wrote. “Taken from me was my ability to live. I was at war with my addiction and I was winning.”
McGlashan was kicked off the boat for a while during season 13 to deal with his addiction.
“Although he went through ups and downs, Nick struggled non-stop to sober up and embrace a new sober lifestyle and is now so committed to his recovery that he inspires others,” according to his Discovery Go bio.