The Kommandoren lost power in the Firth of Lorne at around 6pm last night and the Oban lifeboat was launched.
The boat, which is used as a corporate hospitality venue for conferences and exhibitions, was towed to Oban Bay by a lifeboat.
During the short trip, the Kommandoren managed to regain power and berthed itself at the bay's North Pier.
The boat is based in Aberdeen, but regularly travels around the UK and Europe.
At the beginning of March, the vessel was used as a reception and hospitality area for the Oceanology International Exhibition at the Excel Centre in London.