USS LSM(R)-198 was a Landing Ship Medium (Rocket) of the US Navy during World War II.

During World War II the ship was assigned to the Asiatic Pacific theater as part of the Fifth fleet.

The invasion of the Kerma Retto was an opportunity to break in all twelve of the 188-class LSM(R)s. One of the reasons that Admiral Turner wanted to capture Kerama Retto was his knowledge that the Japanese Sea Raiding Units had suicide boats hidden there.

The northern half of the six-mile-wide invasion beach was assigned to Task Force 53, under the command of Rear Admiral Lawrence F. Reifsnider.

These pickets were to give advance warning of Japanese air attack, particularly by kamikaze aircraft.