About 100 people joined the Maritime Union of Australia (MUA) and other unions in Geelong at a rally to support the striking Tandara Spirit workers on December 1.
Viva Energy, which owns the Geelong oil refinery, ordered the ship to sail to Singapore where the Australian crew would be made redundant and the ship returned to its owners. The crew defied those orders with a three-week sit-in.
The Tandara Spirit is one of just five Australian-operated tankers left. Workers are concerned that Viva Energy could replace them with workers earning as little as $20 a day.