This is the two-person submersible that can descend to a depth of 1,000′. Providing access to underwater features such as coral reefs, shipwrecks, and the sea floor, a completely transparent, climate-controlled 3 1/4″-thick acrylic pressure sphere keeps explorers safe while dipping even into the mesopelagic zone, offering a chance to see exotic, bioluminescent species such as lanternfish. With a maximum speed of three knots, it is powered by a 120- and 24-volt battery bank that provide up to six hours of continuous undersea adventure. The craft is propelled by two 3-hp main thrusters that provide fore, aft, and directional control and two 3-hp vertical/translational thrusters that provide up, down, and lateral control. A centrally located joystick with independent main and vertical/translational thruster controls enables precise positioning near undersea attractions. The craft’s dual-pontoon structure and broad freeboard ensure superior surface stability, even in high sea conditions. While submerged, four external 150-watt quart-halogen lamps illuminate subjects while a xenon strobe light and RF beacon alerts others of the craft’s whereabouts. The 56 3/4″-diameter sphere’s inner diameter enables comfortable, upright seating for passengers. A VHF radio provides surfaced communication and its underwater telephone communicates while submerged. It is equipped with a suite of standard instrumentation, including a barometer, thermometer, hygrometer, depth gauges, fluxgate and magnetic compasses, mechanical clinometers, pressure gauges, and a GPS receiver. Fully classified and certified as a +A1 passenger-carrying manned submersible by the American Bureau of Shipping.