USS Helianthus (SP-585) was a patrol vessel in commission in the United States Navy from 1917 to 1919, seeing service in World War I.

[2][6] Helianthus was assigned to section patrol duty in the 2nd Naval District in southern New England during World War I.

The owner of T.H.C., the Warren Oyster Company, filed for $3,840.56 in damages, but was granted only $50.00 in compensation by the United States Congress.

[7][note 1] The U.S. Navy transferred Helianthus to the United States Coast and Geodetic Survey on 28 March 1919.

[11] SIR: I have the honor to transmit herewith, for the consideration of Congress, in accordance with the provisions of the act of June 24, 1910 (Stat., p. 607), a communication from the acting secretary of the Navy of the 20th instant, submitting an estimate of appropriation, in the sum of $3,840.56, to pay for claims of damages by naval vessels adjusted by the Navy Department.The Speaker of the House of Representatives responded, writing: SIR: This department has considered, ascertained, adjusted, and determined the respective amounts due to claimants on account of damages for which vessels of the United States Navy were found to be responsible in the following described instances: