Palestine Railways H class

The PMR, part of the British Army, was created during World War I to operate all railways in the British and Allied Sinai and Palestine Campaign. It inherited a standard gauge locomotive fleet from the Egyptian Expeditionary Force's Sinai Railway dominated by two classes of 19th-century 0-6-0 requisitioned from railways in Britain: the LNWR 17in Coal Engines and LSWR 395 class.^[3] In Palestine the Coal Engines proved unreliable and neither class was powerful enough for PMR traffic.^[3]

In 1918 the PMR sought a class of 50 more powerful mixed traffic locomotives to replace the Coal Engines and relegate the 395 class to lighter duties. However, British locomotive builders were so busy with War orders that none could supply a class of 50 locomotives quickly enough.^[3]

The UK War Department (WD) had already bought at least 70 4-6-0 locomotives from Baldwin Locomotive Works (BLW) in Eddystone, Pennsylvania in 1917. They carried the WD numbers 801 – 870 of the same class, some of them were fitted with rounded cabs to better fit in the European gauge. All of them were transferred to Belgium at the end of the World War One,^[3] and became SNCB/NMBS type 40 in 1926.^[7] They hauled passenger trains until 1962. Therefore, in 1918 the PMR ordered a batch of 50 of the same class of 4-6-0 from BLW.^[3] The first 10 reached Palestine in 1919 and the remaining 40 followed in 1920.^[8] Following on from the batch sent to Europe, this batch received the WD numbers 871 – 920.^[3]

In 1920 the San Remo Conference mandated the United Kingdom to administer Palestine. The PMR was duly replaced by a civilian organisation, Palestine Railways, which designated the Baldwins class H. In the 1920s it found the class suitable for most work except shunting and powerful enough for most normal PR traffic.

In service all members of the class were painted black.^[2] From 1944 each had its number painted in very large numerals on the side of the tender or tank.^[2]

The Jerusalem terminus of the Jaffa and Jerusalem line suffered from restricted space, and after conversion to standard gauge never had a facility to turn 4-6-0 tender locomotives. Running tender first was unpopular in any location, but especially on this route which had tight curves and steep gradients through the Judean hills, so PR sought a tank locomotive powerful enough for the job. In 1922 PR introduced the 2-8-4T K class tanks from Kitson & Company in England, which were powerful enough to haul 250 ton trains up the 2% (1 in 50) ruling gradient to Jerusalem but suffered derailments caused by their eight-coupled wheel arrangement.^[9]

Therefore, in 1926 PR sent H class locomotives 895, 904, 905, 909, 915 and 918^[1] to Armstrong Whitworth in England whose works at Scotswood in Newcastle-upon-Tyne converted them into 4-6-2T tank locomotives.^[10] PR renumbered them consecutively 7 – 12 and designated them class H2.^[1] On the steep climb up to Jerusalem these could haul only trains of 200 tons compared with the K class's 250, but this was the best PR could achieve with its limited resources.^[10]

Baldwin had built the class with round-topped steel fireboxes^[11] but the PR found these unsatisfactory. It therefore sent six more H class to Armstrong Whitworth who fitted copper fireboxes instead.^[10] On other H class locomotives PR made modifications themselves, fitting Belpaire fireboxes and reducing the number of domes from three to two.^[10]

In 1933 PR opened its own railway workshops in Haifa.^[12] In 1937–38, with the help of some parts supplied by Nasmyth, Wilson & Company of Salford, England,^[12] the Qishon works converted numbers 881, 896, 897, 910 and 912 to tank locomotives.^[1] PR gave this batch a 4-6-4T wheel arrangement, numbered them consecutively 13–17 and designated them class H3.^[1]