PLANS for a solar-powered superyacht decorated with private gardens and a beach club have been unveiled by a Swedish designer.

The whopping 640ft vessel concept, proposed by Viken Group, is essentially a floating boutique hotel.

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It boasts a multipurpose beach club that doubles as a sea courtyard with an infinity pool that connects to semi-private spas.

It is supposed to fit into a small but expanding sector for premium cruises, whisking away guests on long-distance journeys across the high seas.

The accommodation will include double-height windows to showcase panoramic views.

The superyacht-inspired cruise yacht, if it is ever built, will be spread across ten decks, and kept running by a 125-strong crew.

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Viken has not revealed exactly what each of these decks will offer, although it has hinted through new concept renders.

"The market for cruise yachts is currently looking very promising," Antonio Romano, marketing director at Viken Group, said in statement.

The group says it also has a culinary vision for the superyacht, currently known as REI.

REI will offer an exploratory dining experience themed 'from sea, to land, to sky,' offering guests "a diverse and delectable range of cuisines," according to the Viken Group, which has been building high-end cruise ships for 60 years.

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The restaurant-on-water is expected to have a seasonal menu that adopts the cuisine of the countries it visits.

Fredrik Johansson, co-founder of the Viken Group, said: "The 196m project is the perfect illustration of the combined offerings of the Viken Group, where we manage exterior styling, engineering, master planning and interior under one umbrella."

Beneath REI, will lie a secondary 27m expedition vessel, which could be powered by electric or solar power.

This would provide guests with easy and luxurious transport from the boat to any beach resort or hard-to-reach cove.

The group was tasked with building a yacht for the luxury Four Seasons hotel group.

The Four Seasons 1 vessel will be the first of four premium cruise yachts set to launch under the hotel's brand in January 2026.

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