RICHMOND, Calif. - Oil spill responders deploy boom and absorbent pads around the scene of the sunken 205-foot decommissioned Navy Tug Tiger, Monday, Dec. 12, 2011. The Tiger sank last night at its moorings at the Port of Richmond at Potrero point, Dec. 11, 2011. U.S. Coast Guard photo by Petty Officer 2nd Class Pamela J. Boehland.