 On 30 June 1922 she got underway from Woods Hole and conducted a cruise during which she made observations of currents on lines extending from Sandy Hook, Connecticut, from Chatham, Massachusetts, and from Cape Elizabeth, Maine.During August and September 1922, her crew overhauled the BOF fishery patrol vessel .In February 1923, "Halycon" provided valuable service in keeping channels open through ice in the harbors of Gloucester, Manchester-by-the-Sea, and Salem, Massachusetts, and from April through June 1923, she tagged codfish near Nantucket.