The Netherlands-based startup is offering a 19-m (63-ft)-long, 100-ton underwater vessel capable of carrying up to 12 passengers in an airplane-style cabin complete with leather seats, a full bar, galley, and library. Or is it?

The Neyk submarine sounds like an updated Jules Verne vision. According to the company, the boat is the result of eight years of work in collaboration with engineering luminaries including Rolls-Royce, MTU, and Bosch. The streamlined, tear-drop shaped craft is built out of HY-80 steel using a modular construction and a NASA design, allowing it to plunge to depths of up to 150 m (500 ft) and speeds of 15 knots (17 mph, 28 km/h) thanks to two 100-kW outboard electric motor pods powered by batteries or a "Rolls-Royce 4000 U83" (sic) diesel generator on the surface.

Inside, the Neyk is positively decadent compared to other tourist submarines. The passenger cabin is as wide as a Gulfstream jet's, with six large acrylic viewing ports. According to Ocean Submarine, the options include large leather seats complete with seatbelts, large tables, disappearing flat-screen televisions, a head with a marble-topped cabinet, a gallery complete with crystal drinkware, a library, and even a diver airlock, if desired.