Figure 3. Photograph of the Japan Marine Science and Technology Center's (JAMSTEC) ROV, the Kaiko. All seafloor assembly electrical connections, the data storage unit, and the data handling and control unit (see Fig. 6A and 6B) can be removed and replaced by such an ROV. The Kaiko is scheduled to visit Site WP-2 in November 2000 to activate the borehole observatory.