The North Eastern Railway Class S (LNER Class B13) was a 4-6-0 type of steam locomotive designed for express passenger workings. The first example was built in 1899. They were very similar to the eventual NER Class S1, except for the smaller wheels of the former.
Design They were designed to reduce double heading on the East Coast Main Line. However they steamed poorly, with a smaller and shallower grate than was used even by other locomotives at the time (a problem which also affected the B14s and later, the B15s), and the 4-4-0s of the NER Class R quickly replaced them, with the 4-4-2 layout being preferred for later express passenger designs. The class were re-classified as London and North Eastern Railway Class B13 in 1923.
Modifications The first seven locomotives had slide valves, while the remainder had piston valves. The slide valve engines were later fitted with piston valves. Schmidt superheaters were fitted between 1913 and 1925.
Numbering + Table of locomotives NERNo. Datebuilt Datesuperheated Datewithdrawn Notes 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 726 740 757 760 761 Transferred to service stock September 1934; superheater removed; renumbered 1699 October 1946; retired May 1951. 763 766 768 775 1077 738 739 741 743 744 745 746 747 748 749 750 751 752 753 754 755 756 758 759 762
Withdrawal They were withdrawn between 1928 and 1938.
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