Oceania Cruises’ trio of smaller ships are to be upgraded in a $50 million revamp.

The refurbishment will take place over a six-week period next year.

Suites, cabins and some public rooms will be revamped on Regatta (pictured), Insignia and Nautica as part of the work, which aims to bring elements of the line’s Marina and Riviera to the older vessels.

The work in dry dock is scheduled from April 24 to June 6, 2014, with Insignia and Nautica being refurbished in Marseilles and Regatta in Vancouver.

The new-look Insignia will return to service on May 8, 2014 in Barcelona for a 7-day ‘Jewels of Europe’ cruise – the ship’s first cruise on return from a two-year charter to Hapag-Lloyd Cruises.

Nautica is due to re-enter service on May 16, 2014 in Civitavecchia for a 10-day cruise and Regatta on June 7, 2014 in Vancouver for a 10-day Alaska itinerary.

Oceania president Kunal Kamlani said: “This refurbishment programme is an incredible undertaking but we are excited by the opportunity to bring some of the best features of our O-Class ships to Regatta, Insignia and Nautica.

“We will preserve the personality, elegance and comfort of these vessels while furnishing certain areas with the updated décor and amenities that are found on Marina and Riviera. This will ensure a consistent experience across the fleet that we know our guests will love and appreciate.”