The Applanix POS-MV DGPS/IMU is a Position and Orientation System for Marine Vessels designed to provide highly accurate georeferencing and motion compensation for hydrographic and marine surveys. The POS-MV provides a full six degrees-of-freedom solution: position, velocity, roll, pitch, heading, and heave. Accuracy: Horizontal: ~3 cm; Vertical: ~6 cm; Roll/Pitch ~0.02°; Heading ~0.015°