On 25 May a double-hulled crude oil tanker and a bulk carrier collided spilling oil over an estimated 4.5 miles of Singapore's eastern coastline.
About 2,500 tonnes of crude oil leaked from the tanker MT Bunga Kelana 3 following the incident.
Winds and tides have brought some oil ashore. As a result Singapore's most popular stretch of beaches was closed as emergency crews continued to shovel oil-soiled sand into plastic bags.
Singapore's Maritime and Port Authority (MPA) said most of the leaked crude had been contained at sea.
Efforts in the waters off Changi East and East Coast Park are ongoing, with 21 craft equipped with 6 skimmers and 1,915 metres of containment booms deployed, MPA commented.