RIO DE JANEIRO — The Brazilian Navy stated on Friday night it had begun an operation to sink the decommissioned plane provider São Paulo, filled with an undetermined quantity of asbestos and different poisonous supplies, about 220 miles off the nation’s northeastern coast.

A navy information launch didn’t give particulars of the operation, and it was not clear whether or not the ship had gone down. Naval officers didn’t instantly reply to requests for remark.

The provider had spent months at sea, refused permission to dock again in Brazil after plans to recycle the ship in Turkey collapsed. Environmental teams accused Brazilian officers and the corporate that owned the ship of underreporting the quantity of hazardous materials aboard. Beneath stress from environmental teams, Turkey canceled permission for São Paulo to dock after the ship and its tug had already reached Gibraltar.

The vessel, by then in want of upkeep, was compelled to go again to Brazil, the place it was equally refused permission to dock by civilian officers. The navy, for unexplained causes, additionally refused to supply its bases. So the ship spent months being towed in circles as its situation deteriorated.

A navy information launch this week warned of “deteriorating hull buoyancy circumstances and the inevitability of spontaneous/uncontrolled sinking.”

Officers had stated earlier that the 30,000-ton provider could be sunk off Pernambuco State at a spot about 3,000 miles deep, exterior any environmentally protected zones or areas with undersea cables.

Within the final decade, in keeping with the Shipbreaking Platform, a watchdog group that advocates for sustainable recycling, Brazilian firms have disposed of greater than 50 vessels in South Asia, the place rules for dealing with poisonous supplies are lax.

“A number of of those vessels had been exported from Brazilian ports with out following the worldwide guidelines on trans-boundary actions of hazardous waste,” stated Nicola Mulinaris, a coverage adviser at Shipbreaking Platform.

The plan to recycle São Paulo in Turkey was regarded as Brazil’s first effort to scrap a ship beneath well-regulated circumstances.

The poisonous materials aboard São Paulo may disrupt ecosystems, kill animals and crops and poison marine meals chains with heavy metals, in keeping with IBAMA, Brazil’s environmental company.

Rosângela Muniz, the interim director of IBAMA’s environmental high quality division, stated the company had requested the navy for data, together with the strategy that will be used to sink the ship, so it may assist mitigate the influence. There had been no response by the top enterprise on Friday.

Ms. Muniz stated her crew was annoyed that the hassle to recycle São Paulo sustainably had failed.

“This ship is an environmental legal responsibility that has just one right vacation spot: recycling,” she stated. “We all know there might be different requests like this one that can get to IBAMA, and we hope they’ll have an final result that’s higher for the surroundings.”