Sinking Ship is a 7,344-foot (2,238 m) elevation summit located in the Grand Canyon, in Coconino County of northern Arizona, United States.

[3] The descriptive name is because the dip or tilt of the strata, caused by bending movement of the rock, creates the appearance of a ship sinking into the canyon.

[6][7] The summit of Sinking Ship is composed of Kaibab Limestone caprock overlaying cream-colored, cliff-forming, Permian Coconino Sandstone.

[8] The sandstone, which is the third-youngest of the strata in the Grand Canyon, was deposited 265 million years ago as sand dunes.

Below the Coconino Sandstone is slope-forming, Permian Hermit Formation, which in turn overlays the Pennsylvanian-Permian Supai Group.