LNWR Dock Tank

The LNWR 317 class, (also known as Saddle Tank Shunter, Dock Tank or Bissel Tank) consisted of a class of 20 square saddle-tanked 
steam locomotives built by the London and North Western Railway at their Crewe Works between 1896 and 1901. They had a very short coupled wheelbase, with a trailing Bissel truck to carry weight.
== History ==
They were built in three batches of 1, 9 and 10; their first running number was chosen at random from the numbers left vacant by locomotives that had been transferred to the duplicate list. This fate was almost immediately suffered by the 317 class – after only one or two months in service.
All passed to the London, Midland and Scottish Railway in 1923, who initially allocated them the numbers 6400–6419 in the passenger tank sequence. Only five (6402/03/07/14/18) had been renumbered before the numbers were changed to 7850–7869 in 1927, thus moving them into the goods and shunting tanks. The LMS changed their power classification from 1P to 0F at the same time.
Two, 7862 and 7865, survived to enter British Railways service in 1948; 7865 was withdrawn in November 1953, and 7862 three years later. None were preserved.
Bissel tank 7862 at Crewe Works in May 1948. It didn't receive its BR number until March 1949, and lasted until November 1956, by which time it was the last of its class.
== Fleet ==
Table of locomotives 
First
LNWR No.	Crewe
Works
no.	Build date	Duplicate
LNWR No.	Date
duplicated	1st
LMS No.	2nd
LMS No.	Date withdrawn
317	3741	Nov 1896 	3464	Oct 1899	6400	7850	Nov 1930
19 	3976	Nov 1899 	3465	Dec 1899	6401	7851	Nov 1932
22 	3977	Nov 1899 	3466	Dec 1899	6402	7852	Nov 1927
25 	3978	Nov 1899 	3467	Dec 1899	6403	7853	Aug 1932
26 	3979	Nov 1899 	3468	Dec 1899	6404	7854	Dec 1930
38 	3980	Nov 1899 	3469	Dec 1899	6405	7855	Jul 1936
39 	3981	Nov 1899 	3470	Dec 1899	6406	7856	Dec 1929
47 	3982	Nov 1899 	3471	Dec 1899	6407	7857	Nov 1929
49 	3983	Nov 1899 	3472	Dec 1899	6408	7858	Dec 1936
51 	3984	Nov 1899 	3473	Dec 1899	6409	7859	Jun 1938
813	4175	Oct 1901 	3524	Dec 1901	6410	7860	Dec 1929
815	4176	Oct 1901 	3525	Dec 1901	6411	7861	Dec 1932
823	4177	Nov 1901 	3526	Dec 1901	6412	7862	Nov 1956
826	4178	Nov 1901 	3527	Dec 1901	6413	7863	Nov 1931
843	4179	Nov 1901 	3528	Dec 1901	6414	7864	Nov 1929
859	4180	Nov 1901 	3529	Jan 1902	6415	7865	Nov 1953
898	4181	Nov 1901 	3530	Jan 1902	6416	7866	Oct 1931
899	4182	Nov 1901 	3531	Jan 1902	6417	7867	Jun 1932
904	4183	Nov 1901 	3532	Jan 1902	6418	7868	Nov 1929
905	4184	Nov 1901 	3533	Jan 1902	6419	7869	Nov 1932
Category:0-4-2T steam locomotives
Category:0-4-2 steam locomotives
Category:0-4-2 locomotives
Category:0-4-2T locomotives
Category:LNWR locomotives
Category:Scrapped steam locomotives
Category:Scrapped locomotives
Category:Crewe Works locomotives
Category:UK railways
Category:United Kingdom
Category:British steam locomotives
Category:British locomotives
Category:Locomotives
Category:Tank locomotives
Category:Steam locomotives
Category:Built in 1901
Category:Built in 1899
Category:Built in 1896
Category:Saddle tank locomotives
Category:Switcher locomotives
Category:Standard gauge steam locomotives of Great Britain
Category:Standard gauge locomotives