Unmanned “gliders” have demonstrated long endurance operations and are the platform of choice for broad scale meteorology and oceanography (METOC). With buoyancy engines, gliders can operate for months and have demonstrated success with common oceanographic sensors. Likewise low frequency acoustics have been used for basin scale tomography for many years. Together these technologies present a comprehensive tool for under-ice operations. Low frequency acoustics show promise as a method to locate undersea vehicles. This is especially valuable in the arctic environment where ice cover prohibits routine surfacing for GPS fixes. The overall capabilities of this combined system are presented in this paper.