The ro-ro ferry SuperFerry 9 sinks off the Zamboanga Peninsula in the Philippines with 971 persons aboard; all but ten are rescued.

Roll-on/roll-off ships are cargo ships designed to carry wheeled cargo, such as cars, motorcycles, trucks, semi-trailer trucks, buses, trailers, and railroad cars, that are driven on and off the ship on their own wheels or using a platform vehicle, such as a self-propelled modular transporter. This is in contrast to lift-on/lift-off (LoLo) vessels, which use a crane to load and unload cargo.

SuperFerry 9 was a ferry owned by the Philippines-based carrier Aboitiz Transport System Corp (ATSC) and operated by their SuperFerry division. About 9 a.m. Sunday, September 6, 2009, she sank off the south-west coast of Zamboanga Peninsula with a total of 971 passengers and crew aboard.

Zamboanga Peninsula, designated as Region IX, is an administrative region in Mindanao, Philippines. It consists of the provinces of Sulu, Zamboanga del Norte, Zamboanga Sibugay and Zamboanga del Sur, and the cities of Isabela and Zamboanga City.