#10. Personal Submarine
Designer and manufacturer of personal luxury submarines for superyacht owners who want to explore the world beneath the waves. This is a two-persons submersible that can descend to a depth of 1,000′, provides access to underwater features like shipwrecks, coral reefs and the sea floor. It is equipped with a thermometer, barometer, hygrometer, fluxgate and magnetic compasses, depth gauges, mechanical clinometers, pressure gauges, and a GPS receiver.