While there are many interesting and unique science ROVs, there are a few larger high-end systems that are worth taking a look at. MBARI's "Tiburon" vehicle cost over $6 million US dollars to develop and is used primarily for midwater and hydrothermal research on the West Coast of the US. WHOI's "Jason" system has made many significant contributions to deep-sea oceanographic research and continues to work all over the globe. URI/IFE's "Hercules" ROV is one of the first science ROVs to fully incorporate a hydraulic propulsion system and is uniquely outfitted to survey and excavate ancient and modern shipwrecks. The Canadian Scientific Submersible Facility "ROPOS" system is continually used by several leading ocean sciences institutions and universities for challenging tasks such as deep-sea vents recovery and exploration to the maintenance and deployment of ocean observatories.