The first Walker 12′ clinker-built Gunter Sloop was designed and built in 1954 by L H Walker Limited of Leigh-on-Sea  Essex. Early Walker  Boats were made in a number of length from 8′ to 14′ and with many variations in fixtures, fittings, sails, rig and hulls, but it was soon clear that the 12′ Sloop, Clinker built in mahogany on oak with a sliding Gunter rig, was undoubtedly the most popular.

The boats continued to be built by Walkers until 1979 when trading ceased and the frames were destroyed, the last boats were sold in 1980.  At least 504 12′ boats were built and recorded as Tideways.