Highland Railway Loch Class

Infobox Locomotive
name = Highland Railway Loch class
powertype = Steam


caption =
designer = David Jones
builder = flagicon|Scotland Dübs & Co. (15)
flagicon|Scotland North British Loco (3)
whytetype = 4-4-0
gauge = RailGauge|ussg
builddate = 1896 (15), 1917 (3)
boilerpressure = convert|180|psi|MPa|2|abbr=on|lk=on
cylindercount = 2 (outside)
cylindersize = 19×24 in (487×610 mm)
driversize = convert|75.5|in|m|3|abbr=on
weight = convert|54.5|LT|t
tractiveeffort = convert|17560|lbf|kN|2|abbr=on|lk=on
railroad = Highland Railway
LMS, BR
railroadclass = LMS: 2P
numinclass = 18

The Highland Railway Loch class locomotives were small 4-4-0s normally used north of Inverness.

They were introduced in 1896, the design of David Jones, and had the typical Jones appearance of outside cylinders, domed cab roof, louvered chimney, Allan style front framing and Allan valve gear.

Fifteen were built by Dübs and Company in Glasgow, all going into traffic between July and September 1896:

Three more were built in 1917 by Dübs' successor, the North British Locomotive Company:

These were needed primarily for the increased traffic on the Kyle line where they were the heaviest locomotives permitted. It should be remembered that this period was when the initial traffic of the United States effort in World War I was flowing, and much was brought to the west coast of Scotland in an effort to reduce the effect of the U-Boat menace. The trains ran from Kyle to Invergordon so it was a wholly HR traffic.

Withdrawal occurred from 1930 onwards, with only two surviving into British Railways ownership. Neither received their allocated BR number before being withdrawn in 1948 ('Loch Insh') and 1950 ('Loch Tay').

They were classified '2P' by the LMS.