Steven Barry Krumholz was arrested on Royal Caribbea's Allure of the Seas in February under suspicion of selling drugs and plead guilty in a U.S. Virgin Islands court to dealing drugs on board a cruise ship.

Krumholz admitted to selling ecstasy, methamphetamine and ketamine on his ship.  He could face up to 20 years in jail and fines of $1 million.

Krumholz was arrested in St. Thomas after U.S. Customs and Border Protection agents searched his stateroom cabin and found 142 ecstasy pills, nearly 3 grams of methamphetamine, a small quantity of ketamine and about $51,000 in cash.  Officials were tipped off to Krumholz after they found drugs on another passenger who got the drugs from him.

Royal Caribbean says it has a zero-tolerance policy on illegal drugs at sea and it cooperated fully with authorities.