But Norwegian operator Hurtigruten is eyeing a greener future for its fleet, and recently achieved a maritime first by powering its hybrid MS Roald Amundsen ship through the water on battery power alone.

Hurtigruten has been operating since 1893 and today carries out expeditions all over the world. Over the next couple of years it is welcoming a couple of hybrid vessels into its fleet, with the MS Roald Amundsen the first cab off the rank.

Named after the Norwegian explorer who was first to cross Antarctica and reach the South Pole in 1911, the MS Roald Amundsen is designed specifically for the frigid polar waters and boasts the kinds of luxurious amenities you'd expect on a modern day cruise ship.

These include panoramic saunas, restaurants, bars, spacious observation decks, an infinity pool, private outdoor hot tubs and private balconies in more than half of the cabins. There is enough space onboard for 530 guests, and even a dedicated science center for education and entertainment.