MRU 4000 Subsea is a cost-effective alternative for use in subsea surveys and ROV navigation. The 4000 series has high dynamic accuracy and responds very well to rapid motions without any lag. The low power consumption enables long term field deployment. The 4000 series can be delivered with an optional high-end magnetometer, which makes it a good choice for auto heading and motion control purposes as an excellent alternative to less accurate fluxgate compasses.