SAR Steam Locomotive Tenders
Tender type classification
The South African Railways (SAR) era began in 1910, upon the amalgamation of the three former Colonial railways, the CGR, NGR and Central South African Railways (CSAR). Since many tender types are interchangeable between different locomotive classes and types, most South African tender steam locomotives could be equipped with a variety of different tender types, with different coal and water capacities. A tender classification system was therefore adopted by the SAR. Tenders were classified by means of type letters and sometimes numbers, while the specifications of most individual locomotive classes included a list of permissible tender types which could be used with each class.
Tenders of locomotives which were considered obsolete in 1912, when the renumbering of locomotives of the three component railways onto the SAR roster was implemented, were not classified. The type classification is made up of two letters and, when required, a number.
Tender types other than those specified on each locomotive diagram, were not allowed to be coupled to the engines concerned without the approval of the Chief Civil Engineer. Even in respect of some permissible tenders, it was sometimes necessary to make slight structural alterations before the substitution of a tender with the same initial letter designation could be effected
Any alterations to pipes between the engine and tender, if necessary to suit the class of engine concerned, were to be done on the tender only.