Furness Railway K2 Class
The Furness Railway 21 class or "Larger Seagulls", were a class of eight English steam locomotives designed by W. F. Pettigrew and built by Sharp, Stewart and Company of Glasgow for the Furness Railway. Six were built in 1896, and two more in 1900. They were built to supersede the 120 class on the heavier and more important trains and were in turn replaced on the railway’s top trains with the 115 class in the 1920s. They had diameter driving wheels with cylinders.
Numbering
The first six of 1896 were numbered 21, 22, 34, 35, 36 and 37 by the Furness Railway. In 1900, two extra engines were added to the class, Furness Railway numbers 124–125. In 1913, two engines, FR Nos. 34 and 37, were fitted with experimental Phoenix smokebox superheaters, however, these were removed the following year. At some point in time locomotives 21, 22, 34 and 35 were renumbered 44–47 respectively.By 1923 and the grouping of the FR into the London, Midland and Scottish Railway, all eight engines were still in service, and received LMS numbers, these being 10135–10142. They lasted until the late 1920s and early 1930s, performing secondary duties on former FR lines between Barrow-in-Furness and Whitehaven.
Tenders
The six-wheeled tenders that this class used were also used by the Furness Railway D3 0-6-0 tender engines. They carried of water and of coal, their weight being.Withdrawal
The class was withdrawn and scrapped from 1929 to 1931.| Year | Quantity in service at start of year | Quantity withdrawn | Locomotive numbers | Notes |
| 1929 | 8 | 6 | 10135/38-42 | |
| 1930 | 2 | 1 | 10137 | |
| 1931 | 1 | 1 | 10136 |