The reference for locomotives and railcars
Mecklenburg I
Germany | 1848 | 6 produced
“Marschall Vorwärts”, the first locomotive in Mecklenburg
“Marschall Vorwärts”, the first locomotive in Mecklenburg

In type I, the Grand Duchy of Mecklenburg Friedrich-Franz-Eisenbahn combined a total of six locomotives with a 2-2-2 wheel arrangement, which were primarily used to pull passenger trains. Among them was the “Marschall Vorwärts”, which had been named after Field Marshal Blücher. It was the first machine to be used on the Hagenow - Schwerin - Wismar line by what was then still known as the Mecklenburg Railway Company. It connected to the Berlin-Hamburg line that had just been opened by Prussia.

Although the first example was built as early as 1848, the design of the locomotives was already based on aspects that were more frequently encountered in later locomotives. These included, above all, an inside forked frame and cylinders mounted horizontally on the outside. The valve gear was arranged inside and designed according to the Stephenson design.

Since the procurement period stretched over 15 years, some machines differed from the others. Thus, the cylinders of the fourth and fifth machines were attached inclined to the smoke box. The sixth and last saw the boiler expanded from two to three shots and the firebox extended backwards over the trailing axle to provide a larger grate area

Although they only had a single driven axle, the locomotives were able to last a long time. This is mainly due to the fact that the Mecklenburg network was in flat country and the train weights remained relatively low due to the low population density. The first two machines were retired in 1890 and 1894, the rest followed in the years 1898 to 1901.

Variant“Marschall Vorwärts”“Schwaan” und “Nebel”“Hertha” und “Freya”“Hulda”
Axle config2-2-2 (Jenny Lind) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length41 ft 0 1/8 in
Empty weight48,722 lbs44,974 lbs52,139 lbs
Service weight53,242 lbs47,664 lbs46,275 lbs57,254 lbs
Adhesive weight26,235 lbs23,920 lbs24,692 lbs28,109 lbs
Axle load26,235 lbs23,920 lbs24,692 lbs28,109 lbs
Water capacity1,189 us gal
Fuel capacity6,614 lbs (coal)
Power sourcesteam
Estimated power168 hp (125 kW)148 hp (110 kW)134 hp (100 kW)181 hp (135 kW)
Optimal speed19 mph21 mph19 mph22 mph
Starting effort5,567 lbf4,530 lbf5,289 lbf
Power Plant
Driver diameter63.7 in60.4 in66.9 in
Boiler pressure114 psi95 psi106 psi
Expansion typesimple
Cylinderstwo, 13 1/2 x 20 intwo, 13 x 20 intwo, 14 x 20 in
Grate area12.4 sq ft11.7 sq ft8.8 sq ft12.2 sq ft
Firebox area62.5 sq ft63.3 sq ft48.3 sq ft63.7 sq ft
Tube heating area609.9 sq ft524.3 sq ft547.8 sq ft734 sq ft
Evaporative heating area672.4 sq ft587.6 sq ft596.1 sq ft797.7 sq ft
Total heating area672.4 sq ft587.6 sq ft596.1 sq ft797.7 sq ft
Calculated Values
steam locomotive
last changed: 01/2022

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