The Haven class of hospital ships were built for the United States Navy (USN) during World War II.

The class was based upon the United States Maritime Commission's (MARCOM) Type C4 ship (as C4-S-B2 design).

[1] After the war, the ships had a landing platform added aft to allow for the medical evacuation of patients by helicopter except for Benevolence.

[12] The first two ships of the class were completed in time to serve in the Pacific Theater during World War II.

[6][7] All five ships served in the repatriation of troops and former prisoners of war to the United States in the immediate postwar era.

Haven and Benevolence were assigned to Operation Crossroads, a series of nuclear weapon tests.

[6][7] During the reactivation process, Benevolence was struck by a merchant ship while re-entering harbor and was sunk in August 1950.

[10][11] In 1969 Haven was sold to private interests, converted to a chemical tanker and renamed Clendenin and then Alaskan.

Re-designated a "dependent support ship", the ship was intended to provide medical and other services to the dependents of American service personnel stationed at Piraeus, in conjunction with the planned homeporting of an aircraft carrier and six destroyers in the Greek city.