| Class Dv12 |
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VR class Dv12 diesel-hydraulic locomotive at Tampere Perkiö depot. In the background VR class Dr14 |
| Type and origin |
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| Power type | Diesel-hydraulic |
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| Builder | Valmet Oy Tampere / Rauma-Repola Oy Lokomo, Finland |
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| Build date | 1963–1984 |
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| Total produced | 192 |
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| Performance figures |
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| Maximum speed | 125 km/h (78 mph) or 85 km/h (53 mph) |
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| Power output | 1,000 kW (1,300 hp) |
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| Tractive effort | 200 kN (45,000 lbf) |
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| Career |
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| Operators | VR |
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| Class | Dv12 |
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| Number in class | 192 |
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| Numbers | 2501–2568, 2601–2664, 2701–2760 |
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| Disposition | In Service |
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The Dv12 (Sv12 and Sr12 until 1977) is the standard Finnish medium-weight diesel-hydraulic road switcher operated by VR. As all the main lines of Finnish railway network have been electrificied, the locomotive is designated mostly to unelectrified, less frequently used side lines. Occasionally it may still pull cargo trains on main lines. It has also been put in service as a shunter, replacing older classes Dv15 and Dv16 as they were retired. A total of 192 locomotives were built by Lokomo and Valmet between the years 1963 and 1984. As of 2025, the oldest Dv12 units still in use are 62 years old.
