NZR DSB class

The D^SB class is a class of shunting locomotive introduced to New Zealand in 1954.

New Zealand D^SB class

Type and origin
Power type	Diesel-Mechanical/Hydraulic
Builder	Drewry Car Co (25), Mitsubishi Heavy Industries (3)
Build date	1954-67

Specifications
AAR wheel arr	0-6-0
Gauge	1,067 mm (3 ft 6 in)
Length	Drewry: 8.8 m (28 ft 10 in) Mitsubishi:8.5 m (27 ft 11 in)
Loco weight	37 tonnes (36 long tons; 41 short tons)
Prime mover	Drewry: National M4AA7; later: Caterpillar D343TA Mitsubishi: Caterpillar D343TA

Performance figures
Maximum speed	Drewry: 39 km/h (24 mph); later: 57 km/h (35 mph) Mitsubishi: 56 km/h (35 mph)
Power output	195 kW (261 hp)later: 263 kW (353 hp) Mitsubishi:280 kW (380 hp)

Career
Operators	NZGR, New Zealand Railways Corporation
Number in class	28
Numbers	TMS numbers: 1003-1290 Road numbers: 300-327
Locale	All of New Zealand
First run	August 1954
Last run	April 1989
Current owner	Avon Engineering (1), Mainline Steam Heritage Trust (1)
Disposition	1 preserved, 27 scrapped

About

Circa 1950, the New Zealand Railways Department placed an order for 25 D^SB shunting locomotives. They were built by the Drewry Car Co. between 1954 and 1956. The first three D^SB class locomotives were commissioned in August 1954. The D^SB are a larger and more powerful locomotive than the D^Ss and D^SAs, and were used all over New Zealand. By the end of their lives 12 D^SBs were repainted in the "International Orange" livery. Three were purchased for industrial service with D^SB 1153 going to New Zealand Milk Products (later subsumed into Fonterra) to shunt their Whareroa milk factory, 1194 to Pacific Steel at Otahuhu scrap plant and 1221 to Avon Engineering at their Kamo plant. D^SB 1221 was sold in 1986 while the other two were sold in April the same year. In 1963 all Drewry builds were re-engined with Caterpillar D343TA replacing their National M4AA7 which they entered service with. This increased their power output from 195 kW (260 hp) to 293 kW (353 hp).^[1] In the 1960s the New Zealand Railways placed an order for three more D^SBs. These three were built by Mitsubishi Heavy Industries. As of July 2014 only one has been preserved, D^SB 313 was purchased in January 1991 by the Mainline Steam Heritage Trust for shunting uses at their Parnell depot. also Dsb 321 once owned by Kamo still remains there today but it is in parts, ^[1]

Mitsubishi for industry

Road numbers ORBs 1 and 2
Maker's N^os 1475 and 1476

Two 0-6-0 locomotives were built by Mitsubishi Heavy Industries for industrial service for the Ohai Railway Board in 1967.

ORB 1 was withdrawn in 1989 due to heavier trains and was replaced by DJ 3303. In 1990 the New Zealand Railways Corporation took over the Ohai Railway Boards section of the Wairio Branchline. It was then stored in Wairio until being sold to the Ohai Railway Board Heritage Trust for preservation.

ORB 2 shares a similar operating history to ORB 1, but was withdrawn in 1990. Stored in Wairio until 1992 when it was purchased by Reid McNaught for Steam Incorporated. It was then sold to Richard Gibbard in the early 2000s and is still in service for shunting uses by Steam Inc..

Class register

Key:	In service	Out of service	Preserved	Overhaul/Repair	Scrapped

Original no.	TMS no.	Builder	Introduced	Withdrawn	Allocated	Notes
300	1003	Drewry	000000001954-08-01-0000August 1954	000000001986-08-01-0000August 1986	South Island
301	1016	Drewry	000000001954-08-01-0000August 1954	000000001989-04-01-0000April 1989	North Island
302	1029	Drewry	000000001954-08-01-0000August 1954	000000001986-08-01-0000August 1986	North Island
303	1031	Drewry	000000001954-09-01-0000September 1954	000000001987-04-01-0000April 1987	North Island
304	1044	Drewry	000000001954-09-01-0000September 1954	000000001981-03-01-0000March 1981	North Island
305	1057	Drewry	000000001954-12-01-0000December 1954	000000001988-12-01-0000December 1988	North Island
306	1072	Drewry	000000001954-01-01-00001954	000000001986-08-01-0000August 1986	North Island
307	1085	Drewry	000000001954-12-01-0000December 1954	000000001982-10-01-0000October 1982	South Island
308	1098	Drewry	000000001954-12-01-0000December 1954	000000001988-12-01-0000December 1988	North Island
309	1112	Drewry	000000001955-05-01-0000May 1955	000000001986-08-01-0000August 1986	North Island
310	1125	Drewry	000000001955-03-01-0000March 1955	000000001986-10-01-0000October 1986	North Island
311	1138	Drewry	000000001955-03-01-0000March 1955	000000001988-12-01-0000December 1988	North Island
312	1140	Drewry	000000001955-03-01-0000March 1955	000000001983-11-01-0000November 1983	North Island
313	1153	Drewry	000000001955-04-01-0000April 1955	000000001986-04-01-0000April 1986	North Island	Preserved, Mainline Steam.
314	1166	Drewry	000000001955-04-01-0000April 1955	000000001988-12-01-0000December 1988	North Island
315	1179	Drewry	000000001955-05-01-0000May 1955	000000001980-04-26-0000April 26, 1980	North Island
316	1181	Drewry	000000001955-06-01-0000June 1955	000000001988-12-01-0000December 1988	North Island
317	1194	Drewry	000000001956-08-01-0000August 1956	000000001986-04-01-0000April 1986	North Island	Formerly used by Pacific Steel at Otahuhu. Scrapped 1995.
318	1206	Drewry	000000001955-06-01-0000June 1955	000000001986-08-01-0000August 1986	North Island
319		Drewry	000000001955-11-01-0000November 1955	000000001978-09-01-0000September 1978	North Island
320	1219	Drewry	000000001955-07-01-0000July 1955	000000001987-04-01-0000April 1987	North Island
321	1221	Drewry	000000001955-06-01-0000June 1955	000000001986-02-01-0000February 1986	North Island	Formerly used at Avon Engineering, Kamo.
322	1234	Drewry	000000001955-08-01-0000August 1955	000000001987-04-01-0000April 1987	North Island
323	1247	Drewry	000000001956-03-01-0000March 1956	000000001988-12-01-0000December 1988	North Island
324	1262	Drewry	000000001955-12-01-0000December 1955	000000001988-12-01-0000December 1988	North Island
325	1275	Mitsubishi	000000001967-10-01-0000October 1967	000000001988-12-01-0000December 1988	South Island
326	1288	Mitsubishi	000000001967-10-01-0000October 1967	000000001988-12-01-0000December 1988	South Island
327	1290	Mitsubishi	000000001967-09-01-0000September 1967	000000001988-02-01-0000February 1988	South Island

Industrial locomotive register

Key:	In service	Out of service	Preserved	Overhaul/Repair	Scrapped

Builder	Builders Number	Entered Service	Withdrawn	Notes
Mitsubishi	1475	000000001967-01-01-00001967	000000001990-01-01-00001990	Formerly used by the Ohai Railway Board as their N^O 1. Preserved, Ohai Railway Board Heritage Trust.
Mitsubishi	1476	000000001967-01-01-00001967	000000001990-01-01-00001990	Formerly used by the Ohai Railway Board as their N^O 2 Preserved, Steam Incorporated.

References

1 2 "Railfan" 7 (2). Triple M Publications. March 2001. ISSN 1173-2229.

Rail vehicles of New Zealand

Diesel locomotives

Diesel Multiple Units

Electric locomotives

1500 V DC	E^A (later EO of 1968) E^C E^D E^O of 1923 E^W

25 kV AC	EF

Battery	E E^B

Electric Multiple Units

1500 V DC (Wellington)	"English Electric" D^M (inc. D trailers) "Ganz Mavag" EM (inc. ET trailers) "Matangi" FP (inc. FT trailers)

25 kV AC (Auckland)	AM (inc. AMP, AMT, AMA)

Railcars

RM class	88 seater (also known as Fiats or twinsets) Clayton steam railcar Edison battery-electric railcar Leyland diesel railbus Leyland experimental petrol railcar MacEwan-Pratt petrol railcar Model T Ford railcar Sentinel-Cammell steam railcar Silver Fern Standard Thomas Transmission Vulcan Wairarapa Westinghouse

Others	A 88 Buckhurst petrol carriage

Steam locomotives

A of 1873
A of 1906 (inc. A^D)
A^A
A^B
B of 1874
B of 1899
B^A
B^B
B^C
C of 1873
C of 1930
D of 1874
D of 1929
E of 1872 & 1875
E of 1906
F
F^A (inc. F^B)
G of 1874
G Garratt of 1928 (inc. Pacific rebuild)
H
J of 1874
J of 1939
J^A
J^B
K of 1877
K of 1932
K^A
K^B
L
L^A
M
N
N^A
N^C
O
O^A
O^B
O^C
P of 1876
P of 1885
Q of 1878
Q of 1901
R
S
T
U
U^A
U^B
U^C
U^D
V
W
W^A
W^AB
W^B
W^D
W^E
W^F
W^G
W^H
W^J
W^S
W^W
X
Y

Locomotive hauled carriages

See also: Locomotives of New Zealand.

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