Upon her return to Boston, Massachusetts on March 31, 1948, "Edisto" immediately began preparing for operations in the far north. During this summer deployment, her task force resupplied weather stations at Thule, Greenland, and on Ellesmere and Ellif Renghes Islands. The ships in this task force did reconnaissance to establish additional weather stations, trained men in cold weather operations, tested equipment, and collected a variety of data. Except for brief repairs in Boston for replacement of a broken propeller shaft, "Edisto" continued this grueling grind until September 25, 1948. During December 1948, in company with , she successfully rescued , which had been damaged by ice and had run aground in Tunulliarfik Fjord at Narsaq, Greenland.