A Maridive anchor handling tug supply vessel was seized in Aruba in a court row over a $21m debt.
The 138-bhp Maridive 702 (built 2011) was held on 14 July, but has reportedly since left the island's waters, according to the Antilliaans Dagblad.
The coastguard was attempting to move the ship back into its territory, it added.
The last AIS data shows it underway on Aruba on 14 July.
The NoticiaCla website reported the court of Aruba granted permission for two companies to seize the ship.
Court papers seen by TradeWinds show a $21m claim has been made against Egypt's Maridive by brokers Riverlake Solutions and Stalco Shipping.
They were involved in fixing charters with PDVSA Marine arm PDV Marina in 2013 for Maridive 702 and two other Maridive vessels.
The $21m appears to be made up of commissions of 13.25% and 15% owed to the two companies.
One document reveals a charter for Maridive 702 at $26,750 per day for a year.
Maridive did not respond to an email and was not immediately available for comment on Friday.