Triton was cancelled in 1957, probably as a result of the 1956 decision to focus the Navy's strategic weapons development on the Polaris submarine-launched ballistic missile.
[4] An artist’s concept shows the first iteration of Triton with a long ramjet body, two mid-body stub wings, and four solid-fuel boosters clustered around a relatively large cruciform tail.
A 1957 redesign is described in the infobox, apparently a re-expansion to 30,000 pounds (14,000 kg) to achieve a 1,500 nautical miles (2,800 km) range and a perhaps unrealistic speed of Mach 3.5.
However, in 1950 it could not be foreseen that the turbojet-powered, supersonic Regulus II would be comparable to a ramjet-powered weapon in just six years, or that a solid-fueled ballistic missile (Polaris) would soon eclipse all of the Navy’s other strategic options, and that it could be developed and deployed by 1961.
[5] One of the many proposals for modernizing the Iowa-class battleships came in 1955, featuring Talos surface-to-air missiles (SAMs) and one or two launchers for Regulus or Triton.