The ban began on 23 September when Indonesian crew members of four Dutch ships berthed in
Sydney held a
sit-down strike, refusing to work on Dutch-flagged or chartered vessels, over a pay dispute and claiming that the material on the ships was intended to be used to suppress the independence movement. The Indonesian sailors made a request to the
Waterside Workers' Federation of Australia to join the boycott. WWF federal secretary
Jim Healy later said the union would not be a party to aiding in the suppression of an elected independent Indonesian government. The next day, three ships in
Brisbane were held up by the bans, as well as the in Melbourne. The disputes committee of the
Trades and Labour Council endorsed the unions' ban, declaring six vessels in Brisbane to be "black". On 25 September 1945, a meeting of some 1400 waterside workers in Brisbane endorsed the black ban on Dutch ships (with no dissenting voice) and declared "that the Dutch Government in Australia shall not interfere with the Government as at present established by the Indonesian people themselves". This boycott by the
Waterside Workers Federation speedily extended to bans by other unions: boilermakers, engineers, ironworkers, ship painter and dockers, carpenters, storemen and packers, tally clerks, and tug crews. In December 1949, after Dutch recognition of Indonesian independence, a conference of 17 trade unions passed a motion raised by Healy to lift the black ban on Dutch shipping, ending the dispute which had run for over four years. ==What the boycotts meant==