A $50 million upgrade has been unveiled for Oceania Cruises’ three R-Class ships.

The work to Regatta (pictured), Insignia and Nautica will be carried out during the second quarter of next year.

Many of the facilities introduced on the line’s newest and larger ships, Marina and Riviera, are being added during the refits.

The new-look Insignia will return to service on May 8, 2014 in Barcelona for a seven-day ‘Jewels of Europe’ cruise, following its return from a two-year charter to Hapag-Lloyd Cruises.

Nautica will re-enter service on May 16 in Civitavecchia – the port for Rome – for a 10-day ‘Cliffs & Coves’ itinerary and Regatta on June 7 in Vancouver for a 10-day Alaska cruise.

The line’s president Kunal Kamlani said: “We are thrilled to have the opportunity to incorporate many of the best features and interior design elements from our acclaimed Marina and Riviera to Regatta, Insignia and Nautica.

“Not only does it enrich and enhance the guest experience, it underscores our commitment to providing our guests with a consistently outstanding experience across the entire fleet.”