Passengers on Seabourn’s expedition ships--eabourn Venture and her yet un-named sister ship will get to go deep. For a fee six people at a time can board the specifically-Seabourn-designed, battery-powered U-Boat Worx Cruise Sub 7 subs for a 300 meter dive into the sea. 

There they can explore sunken wrecks, reefs, and view marine wildlife in their natural habitat.

Seating is in two clear acrylic spheres flanking the center pilot’s station. . The three passenger seats in each sphere are mounted on a rotating platform that can turn for best sightlines.