NZR DA class
Encyclopedia
The NZR
New Zealand Railways Department
The New Zealand Railways Department, NZR or NZGR and often known as the "Railways", was a government department charged with owning and maintaining New Zealand's railway infrastructure and operating the railway system. The Department was created in 1880 and was reformed in 1981 into the New...

 Da
diesel-electric mainline locomotive class ran on the New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

 railway system
Rail transport in New Zealand
Rail transport in New Zealand consists of a network of gauge railway lines in both the North and South Islands. Rail services are focused primarily on freight, particularly bulk freight, with limited passenger services on some lines...

 between 1955 and 1989. With 146 locomotives, it was the most numerous class to operate in New Zealand, just five more than the AB class
NZR Ab class
The NZR AB class was a class of 4-6-2 Pacific tender steam locomotive that operated on New Zealand's national railway system. Originally an improvement on the 1906 A class, 141 were built between 1915 and 1927 by NZR's Addington Workshops, A & G Price Limited of Thames, New Zealand, and North...

 steam locomotive.

The class were A1A-A1A versions of the Electro-Motive Diesel G12
EMD G12
The EMD G12 was a class of locomotive built by GM-EMD, and its Canadian affiliate General Motors Diesel. In addition, Australian licensee Clyde Engineering built ten locomotives for New Zealand in 1957, five for Hong Kong, 23 for Queensland, 14 for Western Australia and seven for BHP. Australian...

 model, altered slightly to fit New Zealand's rail system, and New Zealand's small loading gauge
Loading gauge
A loading gauge defines the maximum height and width for railway vehicles and their loads to ensure safe passage through bridges, tunnels and other structures...

. They were introduced between 1955 and 1967, and were the first class of diesel locomotives to seriously displace steam traction.

Between 1978 and 1983, 85 were rebuilt as the DC class
NZR DC class
The NZR DC class locomotive is the most common class of locomotive currently in operation on the New Zealand rail network. Primarily employed to haul freight trains operated by KiwiRail, the class is also used for long-distance passenger trains operated by Tranz Scenic and suburban passenger trains...

, of which many are still in use. All but one of the remainder were withdrawn by 1989, with six preserved. The last locomotive was refitted for shunting duties, becoming DAR 517.

Operation

The Da class was built to operate main-line passenger and freight trains, and some services on secondary lines. They had a wheel arrangement of A1A-A1A under the UIC classification
UIC classification
The UIC classification of locomotive axle arrangements describes the wheel arrangement of locomotives, multiple units and trams. It is set out in the International Union of Railways "Leaflet 650 - Standard designation of axle arrangement on locomotives and multiple-unit sets". It is used in much...

 system, generated 1425 hp (1060 kW), and ran at up to 100 km/h. Although they were not the first class of main-line diesel locomotives to operate in New Zealand (this was the DF of 1954), they were the first class to displace the steam locomotives that dominated NZR until the 1950s. They were well suited to hauling freight and passenger trains, and operated the "Scenic Daylight
Scenic Daylight
The Scenic Daylight was a short-lived daytime express train in New Zealand that operated between Auckland and Wellington along the North Island Main Trunk Railway...

" service between Auckland
Auckland
The Auckland metropolitan area , in the North Island of New Zealand, is the largest and most populous urban area in the country with residents, percent of the country's population. Auckland also has the largest Polynesian population of any city in the world...

 and Wellington
Wellington
Wellington is the capital city and third most populous urban area of New Zealand, although it is likely to have surpassed Christchurch due to the exodus following the Canterbury Earthquake. It is at the southwestern tip of the North Island, between Cook Strait and the Rimutaka Range...

. When they arrived in New Zealand the tunnels south of Paekakariki
Paekakariki
Paekakariki is a town in the Kapiti Coast District in the south-western North Island of New Zealand. It is 22 km north of Porirua and 45 km north-east of Wellington, the nation's capital city....

 on the North Island Main Trunk Railway (NIMT) were not large enough for them and they could not operate into Wellington via the NIMT until these tunnels were enlarged in 1967.

Rebuilds and withdrawal

In 1970, six Da class were converted to shunt the Te Rapa
Te Rapa
Te Rapa is a mixed light industrial, large scale retail and semi-rural suburb to the northwest of central Hamilton, New Zealand.Stretching in a long, thin north-south axis, Te Rapa is home to a large number of factories including Te Rapa Dairy Factory, one of the largest of its kind in the world...

 yards and reclassified Daa. Between 1977 and 1983 85 DAs were rebuilt as the new DC class, most by Clyde Engineering
Clyde Engineering
Clyde Engineering was the name of part of the business now known as Downer EDI Rail. Clyde Engineering were involved in the construction of railway locomotives and rolling stock, as well as larger scale engineering projects on behalf of the governments of Australia...

 of Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 and five by NZR at the Hutt Workshops
Hutt Workshops
The Hutt Railway Workshops is a major railway engineering facility in the Lower Hutt suburb of Gracefield in the Wellington region of New Zealand’s North Island...

. Of the locomotives not converted, the last was withdrawn in 1989 and six were preserved, while a seventh, Da 1448, was sold to Tasman Pulp and Paper. The Tasman locomotive was bought back by Tranz Rail
Tranz Rail
Tranz Rail, formally Tranz Rail Holdings Ltd , was the main rail operator in New Zealand from 1991 until it was purchased by Toll Holdings in 2003.- Formation :...

 (the successor to NZR) in 1998 and reclassified DAR, as the front hood had been rebuilt (to provide better visibility), and renumbered 517.

Preservation

Six DA locomotives have been preserved. The class leader, Da 1400, is on static display at MOTAT in Auckland, while Da 1410 and 1431 have been preserved by Steam Incorporated
Steam Incorporated
Steam Incorporated, often abbreviated to Steam Inc., is a railway heritage and preservation society based at the Paekakariki Railway Station, Paekakariki at the southern end of the Kapiti Coast, approximately 50 minutes north of Wellington on the west coast of New Zealand's North Island. Unlike...

 in Wellington
Wellington
Wellington is the capital city and third most populous urban area of New Zealand, although it is likely to have surpassed Christchurch due to the exodus following the Canterbury Earthquake. It is at the southwestern tip of the North Island, between Cook Strait and the Rimutaka Range...

. 1410 is currently on lease to the Railway Enthusiasts Society
Railway Enthusiasts Society
The Railway Enthusiasts Society Incorporated is a New Zealand railway enthusiast society registered under the Incorporated Societies Act 1908 on 17 July 1958.-Objectives:The RES objectives are as follows:...

, 1401 is preserved by the Feilding and District Steam Rail Society
Feilding and District Steam Rail Society
The Feilding and District Steam Rail Society, also known as Feilding Steam Rail, is a railway preservation society located in Feilding in the Manawatu region of New Zealand...

, and 1429 is preserved by a private individual in Auckland. 1471, formerly preserved by Steam Incorporated, is now stored by KiwiRail at Hutt Workshops
Hutt Workshops
The Hutt Railway Workshops is a major railway engineering facility in the Lower Hutt suburb of Gracefield in the Wellington region of New Zealand’s North Island...

 near Wellington. From time to time, Tranz Rail and its successors Toll Rail and KiwiRail have leased these locomotives to complement their own fleets due to maintenance requirements or periods of high freight volumes.

Class register

Original no. TMS no. Introduced Withdrawn Livery Notes
1400 11 Preserved, on display at MOTAT. Was Daa 1400
1401 28 Preserved, in operation at Feilding and District Steam Rail Society
Feilding and District Steam Rail Society
The Feilding and District Steam Rail Society, also known as Feilding Steam Rail, is a railway preservation society located in Feilding in the Manawatu region of New Zealand...

. Was Daa 1401
1402 34 Scrapped. Was Daa 1402
1403 40 Scrapped. Was Daa 1403
1404 57 Scrapped. Was Daa 1404
1405 Scrapped.
1406 63 Scrapped. Was Daa 1406
1407 86 Scrapped.
1408 92 Scrapped.
1409 103 Scrapped.
1410 126 Preserved, Steam Incorporated
Steam Incorporated
Steam Incorporated, often abbreviated to Steam Inc., is a railway heritage and preservation society based at the Paekakariki Railway Station, Paekakariki at the southern end of the Kapiti Coast, approximately 50 minutes north of Wellington on the west coast of New Zealand's North Island. Unlike...

.
1411 132 Scrapped.
1412 149 Scrapped.
1413 155 Scrapped.
1414 161 Scrapped.
1415 178 Scrapped.
1416 184 Scrapped.
1417 190 Scrapped.
1418 201 Scrapped.
1419 218 Scrapped.
1420 224 Scrapped.
1421 230 Scrapped.
1422 247 Scrapped.
1423 253 Scrapped.
1424 276 Scrapped.
1425 282 Scrapped.
1426 Scrapped. Head-on collision with Dx 2639
NZR DX class
The NZR DX class is a class of 49 Co-Co diesel-electric locomotives that currently operates on New Zealand's national railway network.Built by General Electric in Erie, Pennsylvania, United States, they were introduced to New Zealand between 1972 and 1976. The class is based on the General Electric...

 between Parnell and Newmarket.
1427 299 Scrapped.
1428 316 Scrapped.
1429 322 Preserved.
1430 339 Scrapped.
1431 345 Preserved, Steam Incorporated. Mainline registered. Former Sesqui 1990
Sesqui 1990
Sesqui 1990 was a festival that was staged in February 1990 in the city of Wellington, New Zealand. A spectacular commercial and administrative failure, the Sesqui event has subsequently become an icon of corporate mismanagement within New Zealand popular culture.- History :Billed by promoters as...

 colours.
1432 351 Scrapped.
1433 368 Scrapped.
1434 374 Scrapped.
1435 380 Scrapped.
1436 Scrapped. Written off after an accident at Matapihi, Tauranga.
1437 408 Scrapped.
1438 414 Scrapped.
1439 420 Scrapped.
1440 437 Scrapped.
1441 Rebuilt as DC 4421
1442 443 Scrapped.
1443 466 Scrapped.
1444 472 Scrapped.
1445 489 Scrapped.
1446 495 Rebuilt as DC 4513
1447 506 Scrapped.
1448 512 Toll Rail To Tasman Forestry. Rebuilt as DAR517. Stored at Hutt Workshops
1449 529 Scrapped.
1450 535 Scrapped.
1451 541 Scrapped.
1452 558 Scrapped.
1453 564 Rebuilt as DC 4916
1454 570 Scrapped.
1455 Rebuilt as DC 4254
1456 587 Rebuilt as DC 4945
1457 593 Rebuilt as DC 4939
1458 Rebuilt as DC 4450
1459 604 Rebuilt as DC 4951
1460 610 Scrapped.
1461 627 Scrapped.
1462 633 Scrapped.
1463 656 Scrapped.
1464 662 Rebuilt as DC 4565
1465 679 Rebuilt as DC 4686
1466 685 Rebuilt as DC 4640
1467 691 Scrapped.
1468 702 Scrapped.
1469 719 Rebuilt as DC 4761.
1470 Rebuilt as DC 4317.
1471 725 Stored out of service Hutt Workshops
Hutt Workshops
The Hutt Railway Workshops is a major railway engineering facility in the Lower Hutt suburb of Gracefield in the Wellington region of New Zealand’s North Island...

.
1472 731 Rebuilt as DC 4703
1473 748 Scrapped.
1474 754 Rebuilt as DC 4634
1475 760 Rebuilt as DC 4847
1476 777 Rebuilt as DC 4784
1477 783 Rebuilt as DC 4657
1478 Rebuilt as DC 4162
1479 800 Rebuilt as DC 4922
1480 817 Rebuilt as DC 4692
1481 823 Rebuilt as DC 4818
1482 846 Rebuilt as DC 4790
1483 Rebuilt as DC 4277
1484 852 Rebuilt as DC 4801
1485 869 Rebuilt as DC 4853
1486 875 Rebuilt as DC 4824
1487 881 Rebuilt as DC 4778
1488 898 Rebuilt as DC 4663
1489 909 Rebuilt as DC 4588
1490 Rebuilt as DC 4323
1491 915 Rebuilt as DC 4628
1492 921 Rebuilt as DC 4876
1493 Rebuilt as DC 4283
1494 938 Rebuilt as DC 4726
1495 944 Rebuilt as DC 4749
1496 950 Rebuilt as DC 4755
1497 Rebuilt as DC 4473
1498 967 Rebuilt as DC 4611
1499 973 Rebuilt as DC 4732
1500 Rebuilt as DC 4185
1501 Rebuilt as DC 4035
1502 Rebuilt as DC 4248
1503 Rebuilt as DC 4438
1504 Rebuilt as DC 4058
1505 Rebuilt as DC 4536
1506 Rebuilt as DC 4225
1507 Rebuilt as DC 4041
1508 Rebuilt as DC 4191
1509 Rebuilt as DC 4110
1510 Rebuilt as DC 4369
1511 Rebuilt as DC 4179
1512 Rebuilt as DC 4064
1513 Rebuilt as DC 4156
1514 Rebuilt as DC 4070
1515 Rebuilt as DC 4087
1516 996 Rebuilt as DC 4830
1517 Scrapped.
1518 Rebuilt as DC 4300
1519 Rebuilt as DC 4133
1520 Rebuilt as DC 4104
1521 Rebuilt as DC 4127
1522 Rebuilt as DC 4571
1523 Rebuilt as DC 4093
1524 Rebuilt as DC 4605
1525 Rebuilt as DC 4006
1526 Rebuilt as DC 4444
1527 Rebuilt as DC 4219
1528 Rebuilt as DC 4352
1529 Rebuilt as DC 4231
1530 Rebuilt as DC 4415
1531 Rebuilt as DC 4260
1532 Rebuilt as DC 4012
1533 Rebuilt as DC 4029
1534 Rebuilt as DC 4496
1535 Rebuilt as DC 4202
1536 Rebuilt as DC 4346
1537 Rebuilt as DC 4542
1538 Rebuilt as DC 4594
1539 Rebuilt as DC 4559
1540 Rebuilt as DC 4375
1541 Rebuilt as DC 4467
1542 Rebuilt as DC 4398
1543 Rebuilt as DC 4409
1544 Rebuilt as DC 4381
1545 Rebuilt as DC 4507
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