Two Holland America employees who died in a cruise ship’s engineering space were allegedly killed by a steam explosion – and the vessel’s emotional captain broke down when he announced the tragedy to the passengers.

Engineer Joseph Terrado of the Philippines and Wawan Gusnawan of Indonesia, a wiper, were killed in the horrific accident aboard the Florida-based Nieuw Amsterdam while docked in the Bahamas on Friday, Miami attorney Jim Walker told WPLG.

“There was an accidental steam release in an engineering space on board Nieuw Amsterdam, which sadly resulted in the death of two crew members,” a Holland America rep told The Post in an emailed statement Monday.

The Bahamas Maritime Authority and the Dutch Safety Board are investigating the exact cause of the accident, the spokesperson added.

One of the passengers said the captain announced the deaths of the two crewmen.

“We were celebrating the last day of the cruise,” Laine Doss told NBC News, saying the jubilant mood changed “to something extremely somber” when the captain came on the PA system.

“He broke down crying. There was a moment of silence that the captain requested. And that entire scenario did affect the entire cruise,” she said.

“Things were canceled, joyous events were canceled, and we really just thought about mortality — the people who perished on the ship,” Doss added.

Walker alleged that a mechanical failure triggered the explosion of a steam compensator, adding that the response by workers may have led to the victims getting trapped in an area where oxygen depleted as it filled with steam vented at 356 degrees Fahrenheit, the Dutch NL Times reported.

The attorney based his allegations on statements and images sent to him by Holland America workers who wished to remain anonymous, according to the outlet.

The cruise rep told The Post that allegations voiced about details prior to findings by Bahamian and Dutch authorities are “uninformed.”

“All systems on board Nieuw Amsterdam have since been reviewed and determined to be fully operable by independent surveyors of the Dutch government and confirmed by the US Coast Guard,” the Holland America statement said.

“All of us at Holland America Line are deeply saddened by this event. We’ve been in contact with the families of both team members and are offering our support to them and to all of our crew at this difficult time,” it added.

A Coast Guard rep said she was looking into the statement and was unable to immediately confirm it, according to NBC News.  

The ship, which carries up to 2,106 passengers and operates under a Dutch flag, departed the private Half Moon Cay, also known as Little San Salvador Island, in the Bahamas for Fort Lauderdale a few hours after the accident.

Authorities from the Netherlands also were sent to the Bahamas to investigate the fatal accident, NL Times reported.