US labour unions are not pleased with the plan to launch a US Virgin Islands flag state.

The heads of eight maritime unions published a statement on Tuesday slamming the concept as a way to enrich foreign shipowners at the expense of US interests.

“The proposed US Virgin Islands flag of convenience open registry will not benefit the United States nor America’s maritime industry, any more than any other second or open registry benefits a national flag country,” said the labour leaders, who included the heads of the American Maritime Officers, the Marine Engineers’ Beneficial Association and International Organization of Masters,...