SPINDLE (Sub-glacial Polar Ice Navigation, Descent, and Lake Exploration) is a 2-stage autonomous vehicle system consisting of a robotic ice-penetrating carrier vehicle (cryobot) and an autonomous submersible HAUV (hovering autonomous underwater vehicle).The cryobot is designed to descend through an ice body into a sub-surface ocean and deploy the HAUV submersible to conduct long range reconnaissance, life search, and sample collection. The HAUV submersible will return to, and auto-dock with, the cryobot at the conclusion of the mission for subsequent data uplink and sample return to the surface.