The Amsterdamsche Droogdok Maatschappij NV (ADM) was a shipyard in Amsterdam that was active in the field of ship repair, extensive ship conversion works and machine construction from 1877 to 1985. From 1950 to 1965, the company also built new ships.
WITH THE HELP OF KOOLE CONTRACTORS, DECOM AMSTERDAM HAS GIVEN THE SITE A NEW LEASE OF LIFE AFTER 35 YEARS BY ESTABLISHING A SHIP-RELATED COMPANY AT THIS UNIQUE LOCATION IN AMSTERDAM.
The old shipyard was founded in 1878 on the north side of the IJ, where the first dry dock was moored a year later. Because the yard in Amsterdam-Noord had insufficient capacity for expansion, the ADM purchased a site in 1960 in the Westelijk Havengebied (Western Port Area), where a second location was constructed. In 1965, the company constructed a new dock, Dock 5, for this new location, which was known as the “Werf Westhaven”. The old location in Amsterdam-Noord became the “Werf Noord”.
Due to the economic downturn, the ADM was forced to close the company in 1978 and merge with the Nederlandsche Dok en Scheepsbouw Maatschappij NV (NDSM). The repair operations of both companies were brought together as the Amsterdamse Droogdok Maatschappij BV, with the construction of new ships being handled by the Nederlandse Scheepsbouw Maatschappij BV (NSM). This new combination was also not destined to live long, and the ADM/NSM was declared bankrupt in 1985. (Source: https://www.geschiedenis-van-amsterdam-noord.nl)