Miami, FL-based Storylines residential ships and the Brodosplit shipyard in Split, Croatia, have signed a construction contract to build the world’s first environmentally sustainable private residence ship.

Pricing of the residences on the ship ranges from $1 to $8 million for the lifetime of the vessel with a limited number of 24-year leases available starting at $647,000. Total sales revenue of the project is valued at $1.5 billion.

The MV Narrative 753-foot passenger vessel will have 547 units and be the first residential ship powered by liquid natural gas propulsion.

The ship is purposely built for residential life at sea and includes a post office, school, library, hospital, bank, pools, office spaces and 20 dining and bar venues. Amenities include the largest wellness center at sea with spa, gym and anti-aging clinic. The ship also includes a waterfront marina with personal watercraft, bowling alley, hydroponic garden farm and an open-air fitness deck.