The Gannet, S-3 Viking, and the reach of carrier-based ASW

How did the S-3 Viking compare with the Gannet, and what future is there for carrier-based fixed-wing ASW?

Experienced Gannet crews initially had an advantage, but the Viking's newer technology and greater range became decisive as it matured. Uncrewed aircraft could eventually recover some fixed-wing ASW tasks.

Experienced Gannet crews could outperform a newly introduced Viking in exercises, but that early result is distinguished from the mature S-3's capabilities. Once its crews and systems developed, the Viking's newer technology and greater range gave it the stronger position. An assumption that the S-3 remained operational is corrected by noting its retirement. Helicopters are favored by one participant for shipboard ASW because they can loiter and work from the ships they protect. That preference is challenged on operating cost and maintenance burden, while the Viking's defenders emphasize its wider search area. Fixed-wing reach could deter submarines waiting farther from the carrier, complicate their estimate of its position, and fill gaps between land-based patrols. Uncrewed aircraft able to deploy sonobuoys could restore part of that wider search capability without recreating the Viking exactly.