desc=The sidewheel flange of Robert J. Walker on the bottom of the Atlantic Ocean, photographed by a National Oceanic and Atmospheric Administration dive team on 23 June 2013.The survey ship sank in a collision – probably with the commercial schooner Fanny (flag unknown) – off the coast of New Jersey, 12 nautical miles southeast of Absecon Light, with the death of 20 of her crew.