On September 4, the 12 meter long tugboat Oshio (MMSI: 563019020) sank off the south eastern coast of Singapore near Tanah Merah. The Oshio had been in the eastern anchorage when it sank with 2 crew members on board. Singapore authorities dispatched vessels to the scene. A Police Coast Guard vessel rescued one crew member who was later taken to hospital, but subsequently perished. The other crew member was still reported as missing.

Authorities have requested all vessels to stay clear of the area while  salvage divers to confirm the location of the Oshio.  No reports of pollution spotted in the area. The cause of the sinking has not yet been determined.