articulated locomotive class operated by the company. These tank locomotives were made to operate on the Antipolo line. However due to the steep gradient and a high operational cost, the line was closed in 1917. These locomotives were then relegated to the Pagsanjan line in Laguna and the South Main Line between Manila and Lucena. These locomotives were retired in 1925 after being replaced by larger tender locomotives. South Africa Narrow gauge Between 1919 and 1925, the South African Railways (SAR) placed five Class Garratt locomotives with this wheel arrangement in service on the Avontuur narrow gauge line through the Langkloof and also in Natal. They were the first Garratt locomotives to enter service in South Africa. The three locomotives, numbered 51 to 53, were erected at Uitenhage and put on trials on the Avontuur line in May 1920. These first three locomotives were not superheated. They had outside plate frames, Walschaerts valve gear, Belpaire fireboxes and used saturated steam and slide valves. Having been proven successful during trials, another two locomotives were ordered from Beyer, Peacock & Company. Numbers 54 and 55 were delivered in 1925 and placed in service in Natal. Since these two were superheated, they had longer smokeboxes and were longer in overall length, while the incorporation of piston valves required alteration of the valve gear. The cabs of the second order locomotives were also improved to offer better protection to the crew. Cape gauge In February 1921, the SAR placed a single experimental Class GA Garratt locomotive in service. It was ordered from Beyer, Peacock & Company in 1914, together with the order for the narrow gauge Class NG G11 Garratts, but wartime hostilities also delayed its delivery until 1920. It was the first Cape gauge Garratt to enter service in South Africa. The locomotive was superheated, with a Belpaire firebox, a plate frame and Walschaerts valve gear. It was erected in the Durban shops and placed in trial service on the Natal mainline. During the trials it was found that the absence of trailing carrying wheels on the engine units was a disadvantage, since it led to excessive flange wear on the driving wheels. As a result, the locomotive remained the only representative of its Class and all subsequent Garratt models of the SAR were equipped with trailing Bissel trucks on their engine units. The locomotive was withdrawn from service in 1938 because of