Navy Electronics Laboratory events—the submerged voyage of USS "Nautilus" from the Pacific to the Atlantic, via the North Pole, in 1958, with NEL’s Dr. Waldo Lyon aboard as chief scientist and ice pilot. That same summer, the USS "Skate" cruised from the Atlantic to the North Pole and the central Arctic Ocean, surfacing 9 times through small holes in the ice cap. Dr. Eugene C. La Fond, head of NEL's Oceanography Branch, was chief scientist In March 1959, the "Skate" returned to the Arctic, under winter conditions, with Dr. Waldo Lyon as chief scientist, and for the first time, the nuclear submarine was
Skipjack-class submarine planes were moved to the massive sail to cut down on flow-induced noise near the bow sonar arrays. They were known as sail planes or fairwater planes. The "Skipjack"s were the first class built with sail planes; they were later backfitted on the "Barbel"s. This design feature would be repeated on all U.S. nuclear submarines until the improved , the first of which was launched in 1988. The small "turtleback" behind the sail was the exhaust piping of the auxiliary diesel generator. The "Skipjack"s also introduced the S5W reactor to U.S. nuclear submarines. It was known as ASFR (Advanced Submarine