VQ-1’s air assets and technical capabilities were significantly upgraded in the spring of 1969 with the arrival of two EP-3B Orion “Bat Rack” aircraft.
PR-31 arrived 17 March 69 and PR-32 arrived on June 21. After their initial checkout at Atsugi, Japan, both aircraft deployed to Det Bravo. Back end equipment in the EP-3B was similar to that of the EC-121M (Willy). The real advantage of the EP-3B was its cruising altitude, nearly twice that of the venerable Willy. This resulted in a significant improvement in signal quality. From the squadron standpoint, the EP-3s were more reliable and required less maintenance. The EA-3B Skywarrior back end equipment was upgraded in August 1969. This upgrade was nicknamed SEAWING, a name sometimes applied to EA-3B missions in general.
Source: LCDR Robert E. Morrison, USN (ret.)