“Stonka" (“Colorado Potato Beetle” )or SM42

The Fablok 6D (factory designation) is a diesel shunting locomotive manufactured at the Fablok plant in Chrzanów from 1963 to 1992. A total of 1,822 units of this type were produced. In the PKP (Polish State Railways) system, it is designated SM42 (Diesel, Shunting; the 41–49 range is reserved for shunting locomotives with electric transmission and multiple control).
In its original version, the locomotive had a 588 kW (800 KM) engine and a maximum speed of 90 km/h; on flat track, it could haul trains weighing 1,000–1,500 metric tons at a speed of 40–50 km/h

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Polish

Fablok 6D (oznaczenie fabryczne) to manewrowa lokomotywa spalinowa produkowana w zakładach Fablok w Chrzanowie w latach 1963–1992. W sumie wyprodukowano 1822 egzemplarze tego typu. W PKP (Polskie Koleje Państwowe) nosi oznaczenie SM42 (Spalinowa, Manewrowa, zakres 41-49 przeznaczony jest dla lokomotyw manewrowych z przekładnią elektryczną i sterowaniem wielokrotnym)
W oryginalnej wersji lokomotywa posiadała silnik o mocy 588kW (800KM), maksymalna prędkość 90km/h, na płaskim szlaku mogła prowadzić pociągi o masie 1000-1500 ton z prędkością 40-50km/h

SM42-597 with the “Tamara” TEM-2 (number unknown) at the station in Siedlce

SM42-522, heading toward Łuków, passed the junction with Line 31 (Siedlce–Siemianówka) in Ujrzanów near Siedlce

SM42-087 and a TEM2 (number unknown) are entering the railway bridge at the Citadel over the Vistula River

SM42-517, heading toward Jasło, is crossing the bridge over the Wisłok River

SM42-990 freezing in a wintry setting in Nowy Sącz.

SM42-453, pulling a train of empty cars, is heading toward Siedlce

But that’s history now; these locomotives are no longer in service. Rows of decommissioned locomotives destined for the scrapyard stand at the Jelenia Góra station (2013).

Translated using DeepL