Elite Indonesian navy frogmen wearing protective gear keep watch on their boats as over 300 Indonesian crew members of the Explorer Dream cruise ship are brought ashore for testing and quarantine amid the coronavirus pandemic, at a port in Jakarta. The country has reported 9,511 cases of infection, with 773 deaths. Photo: AFP

More than a dozen shipowners have made payments of about $300,000 apiece to release vessels detained by the Indonesian navy, which said they were anchored illegally in Indonesian waters near Singapore, according to sources with direct knowledge of the matter, Reuters said on Sunday.

The dozen sources include shipowners, crew and maritime security sources all involved in the detentions and payments, which they say were either made in cash to naval officers or via bank transfer to intermediaries who told them they represented the Indonesian navy.

Reuters was not able to independently confirm that payments were made to naval officers or establish who the final recipients of the payments were.

The detentions and payments were first reported by Lloyd's List Intelligence, an industry website.

Rear Admiral Arsyad Abdullah, the Indonesian naval fleet commander for the region, said in a written response to Reuters' questions that no payments were made to the navy and also that it did not employ any intermediaries in legal cases.

He said there had been an increasing number of detentions of ships in the past three months for anchoring without permission in Indonesian waters, deviating from the sailing route or stopping mid-course for an unreasonable amount of time. All the detentions were in accordance with Indonesian law, Abdullah said.

The Singapore Strait, one of the busiest waterways in the world, is crowded with vessels waiting for days or weeks to dock at Singapore, a regional shipping hub where the COVID-19 pandemic has led to long delays.

Ships have for years anchored in waters to the east of the Strait while they wait to port, believing they are in international waters and therefore not responsible for any port fees, two maritime analysts and two shipowners said.

The Indonesian navy says that this area comes within its territorial waters and it intends to crack down harder on vessels anchoring there without a license.

A spokesperson for the Maritime and Port Authority of Singapore, a government agency, declined to comment.

Reuters