 By 30 June 1923, she had steamed over the preceding year.During fiscal year 1924, which ran from 1 July 1923 to 30 June 1924, "Halcyon" again tagged codfish during the summer months.She also used drift bottles to study currents on lines running offshore from Mount Desert and Cape Elizabeth, Maine, and Cape Ann and Cape Cod, Massachusetts, and conducted two short cruises to observe water temperatures in Massachusetts Bay.