Like the LightCraft, the Marine Mass Launcher represents another possible contender to the role space elevator, providing both an early system supporting better transit volume than the initial SE and, long-term, a contingency option for the development of a large volume system. The MML concept derives from Marshal Savage’s original Bifrost concept for a mass-accelerator launch system. Unfortunately, his original scheme for employing a mountain as a supporting structure for the system was unworkable owing to the extreme centrifugal forces the slope of the mountain would produce in a vehicle accelerated to hypersonic speeds. The MML presents a simple alternative in the form of a fully linear open-air accelerator that would be associated with an Aquarian marine colony. To overcome the obvious