The LNER designation for Class H engines was Class C11. However, as six engines were not yet superheated, and therefore inherited by the LNER as Class I engines, these were given LNER designation of Class C10.

The Reid Class C10 and C11 (NBR I and H) 4-4-2 Atlantics. Attempting to compete against the Caledonian Railway, the North British Railway (NBR) decided to build new and heavier rolling stock in 1905. This stock required locomotives more powerful than the existing 4-4-0s, and Reid produced two proposals for 4-4-2s. A three cylinder compound was ...

(Those which remained saturated were briefly designated class I or LNER class C10, but all were superheated by 1925 and became class C11.) The largest and most powerful locomotives ever built by the NBR.

The LNER 4-4-2 Atlantic Locomotives. Britain's first Atlantic appeared on the Great Northern Railway (GNR) in 1898 as an enlargement of the ubiquitous 4-4-0 for express work, building 116 examples of various designs.

The North British Atlantic, later known as NBR Class H, and then as LNER Class C11 was a class of 4-4-2 steam locomotive of the North British Railway. The class was designed by William P. Reid , Locomotive Superintendent of the NBR, and entered service under his direction.

To distinguish them, the non-superheated locomotives were renamed to class I and renamed back to H when the superheater was installed. This process took until 1926, so even the LNER used a similar approach by calling the last non-superheated ones …

Jun 6, 2008 · (Those which remained saturated were briefly designated class I or LNER class C10, but all were superheated by 1925 and became class C11.) The largest and most powerful locomotives ever built by the NBR.

Class: Wheel Arr. Dr. Dia. Cylinders Dia. x Str. Boiler Press. Ad. Wt. EW WO: Grate Area: Evap. Surface: Sup. Surface: Remarks: A: 0-6-2T: 54in: 18x26in: 175psi: 48t ...

NBR Class H 4-4-2 (LNER Class C11) Details originally as Class I. Introduced: 1906. Boiler pressure: 180 psi. Cylinders: (O) 21" x 28". Driving wheel diameter: 6' 9". Tractive effort: 23,324 lbs. Weight: locomotive: 74 tons 8 cwt. Tender: 45 tons 8 cwt. NBR Class I 4-4-2 (LNER Class C10) All rebuilt to Class H. Introduced: 1906. Boiler pressure ...

The North British Atlantic, later known as NBR Class H, and then as LNER Class C11 was a class of 4-4-2 steam locomotive of the North British Railway. The class was designed by William P. Reid, Locomotive Superintendent of the NBR, and entered service under his direction. They were the heaviest, longest, and most powerful (by tractive effort) locomotives ever employed on the North British Railway.