Sinking

On May 7, 1965, Cedarville was travelling between Rogers City, Michigan^[3] and Gary, Indiana with a load of 14,411 long tons (14,642 t) of limestone.^[2] One mile (1.6 km) east of the Mackinac Bridge, in heavy fog, Cedarville collided with the Norwegian ship MV Topdalsfjord. The collision occurred as a result of miscommunication between the two ships, which both changed their course a mile away from each other, with Topdalsfjord's captain steering his ship on a course that would lead to the two vessels passing each other on their starboard sides. The captain of Cedarville, however, intended for his vessel to cross the bow of Topdalsfjord, but his message stating such was not received by Topdalsfjord, which continued on a course that led to it colliding with Cedarville's port side.^[1][2]

While the collision caused only superficial damage above the waterline, consisting mainly of broken railings and deck plates, the bow of Topdalsfjord had created a large hole in Cedarville's hull below the waterline, and within minutes of the collision a slight list to the port had developed. The captain of Cedarville ordered water to be pumped into the starboard ballast tanks to counteract the list, and intended to try to run the ship aground to prevent it from sinking. As the ship moved towards land, however, the weight of the water within the hull forced the bow down, and the ship began listing to starboard, eventually rolling over before sinking. Most survivors of the collision, in which ten out of the 35 aboard died, were picked up by the German freighter MV Weissenburg, and subsequently transferred to the US Coast Guard cutter Mackinaw.^[3]