An engine failure and explosion aboard the DFDS ship Crown Seaways at 9:30pm on Sunday night could be felt throughout the ship and resulted in smoke on many of the decks.
DFDS spokesperson Gert Jakobsen later explained to media that there had been a crankcase explosion in one of the ship's engines.
“One of the ferry's four engines is out of order, but the ship usually only sails on three,” Jakobsen told Frederiksborg Amts Avis.
"Everything is under control and we will arrive in Oslo on time.” The boat duly arrived in Oslo this morning on time.
Following the explosion, passengers were asked to assemble on one of the decks while fire personnel investigated the cause of the explosion. Passengers were reported to be calm and in good spirits.
The incident occurred about five hours into the crossing between Copenhagen and Oslo. Jakobsen said that no-one had been hurt.