fuel oil. In September 2006, a clean-up project was started that cost an estimated $1.7 million, approximately the same as the estimated $1.5 million cost of the original construction of the ship in 1919. During the clean-up, workers pumped 500 U.S. gallons (416 Imperial gallons; 1,893 liters) of oil from the ship and discovered the carcasses of 200 more birds and two harbor seals inside the wreck. The ship continued to deteriorate after the clean-up. While she had over the decades been broken into four roughly segmented pieces, winter storms in February 2016 pushed the wreck onto her starboard side and broke her rear half open. On 21 January 2017, another winter storm tore the stern off the ship. On 5 January 2023, yet another winter storm destroyed portions of the pier leading to the ship. See also SS Selma (1919) References External links Palo Alto information at ConcreteShips.org Palo Alto information at California State Parks website Design 1100 tankers Shipwrecks of the California coast SS Palo Alto SS Palo Alto 1919 ships Concrete ships Oil tankers History of Santa Cruz County, California History of the Monterey Bay Area Ships built in Oakland, California Ships sunk as breakwaters