Indian locomotive class YDM-1
The Indian locomotive class YDM-1 is a class of diesel-Hydraulic locomotive that was developed in 1954 by North British Locomotive Company (NBL) for Indian Railways. The model name stands for Metre gauge (Y), Diesel (D), Mixed traffic (M) engine, 1st generation (1). They entered service in 1955. A total of 20 YDM-1 locomotives was built between 1954 and 1956, which made them among the first MG main-line diesels. 

The YDM-1 served both passenger and freight trains for over 46 years. As of January 2020, all 20 locomotives have been withdrawn from service with 3 locomotives being preserved at various location around India. 
Q34336
diesel-Hydraulic
Concept
Q751494
North British Locomotive Company
ORG
Q819425
Indian Railways
ORG
Q24609
Metre gauge
Concept
Q95690559
Indian locomotive class YDM-1
Concept
1954-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1954
DATE
1955-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1955
DATE
1954-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1954
DATE
1956-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1956
DATE
2020-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
January 2020
DATE
-1^^http://www.w3.org/2001/XMLSchema#decimal
-1
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+20^^http://www.w3.org/2001/XMLSchema#decimal
20
NUMBER
-1^^http://www.w3.org/2001/XMLSchema#decimal
-1
NUMBER
-1^^http://www.w3.org/2001/XMLSchema#decimal
-1
NUMBER
+46^^http://www.w3.org/2001/XMLSchema#decimal
46
NUMBER
+20^^http://www.w3.org/2001/XMLSchema#decimal
20
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
subclass of
total produced
total produced