Lines operated by locomotives shedded at St Blazey are mainly the branches from Par to Newquay and associated freight lines and the two lines to Fowey. This resulted in an allocation of locomotives designed for hauling freight trains, and with the tight curves encountered on some of the branches, types with a short wheelbase suitable for such lines were usual.
Locomotives at St Blazey, primarily those operating on branches from Par to Newquay and associated freight lines, as well as the two lines to Fowey, were designed for hauling freight trains. The tight curves found on some of these branches led to a preference for locomotives with short wheelbases suitable for such routes.