The Franz Krull ''Sk''-class is a class of
steam locomotive
A steam locomotive is a locomotive that provides the force to move itself and other vehicles by means of the expansion of steam. It is fuelled by burning combustible material (usually coal, oil or, rarely, wood) to heat water in the loco ...
built by the
Franz Krull metal works of
Tallinn
Tallinn () is the most populous and capital city of Estonia. Situated on a bay in north Estonia, on the shore of the Gulf of Finland of the Baltic Sea, Tallinn has a population of 437,811 (as of 2022) and administratively lies in the Harju '' ...
,
Estonia
Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, and t ...
between 1931-1940.
The ''Sk'' were
narrow-gauge
A narrow-gauge railway (narrow-gauge railroad in the US) is a railway with a track gauge narrower than standard . Most narrow-gauge railways are between and .
Since narrow-gauge railways are usually built with tighter curves, smaller structu ...
d and used
oil shale
Oil shale is an organic-rich fine-grained sedimentary rock containing kerogen (a solid mixture of organic chemical compounds) from which liquid hydrocarbons can be produced. In addition to kerogen, general composition of oil shales constitu ...
as fuel, since it is the primary energy source in Estonia. A total of 16 units were produced, of which none has survived.
The last ''Sk'', ''Sk-156'', was scrapped in 1980 in
Beloretsk
Beloretsk (russian: Белоре́цк; ba, Белорет, ''Beloret'') is a types of inhabited localities in Russia, town in the Republic of Bashkortostan, Russia, located on the Belaya (Aghidhel) River, Belaya River, from Ufa. Population:
...
,
Russia
Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eigh ...
, where it was actively used until scrapping.
List of ''Sk'' locomotives
Built in 1931:
*Sk-151
*Sk-152
*Sk-153
*Sk-154
*Sk-155
*Sk-156
*Sk-157
*Sk-158
*Sk-159
*Sk-150
Built in 1935:
*Sk-160
*Sk-161
*Sk-162
Built in 1940:
(During the first
Soviet occupation of Estonia
The Estonian SSR,, russian: Эстонская ССР officially the Estonian Soviet Socialist Republic,, russian: Эстонская Советская Социалистическая Республика was an National delimitation in ...
, when the factory was renamed "Punane Krull" ("Red Krull"). These locomobiles were decorated by the
red star and
hammer and stickle figures.)
*Sk-163
*Sk-164
*Sk-165
References
{{Reflist
External links
Mulgi RailwayHistory of Estonian narrow-gauge railways(in Estonian)
Steam locomotives of Estonia
750 mm gauge locomotives
Railway locomotives introduced in 1931
2-8-0 locomotives