The efforts to contain and clean up the oil spill caused by the collision between a Malaysian-registered tanker and a bulk carrier have been positive, a statement released by the Maritime and Port Authority (MPA) of Singapore said.
The operations, which continued for the sixth day, involved some 125 people.
In its statement, the MPA also said that as of this afternoon, no oil slick was reported in the Traffic Separation Scheme (TSS) off Changi East or within the anchorages of Singapore's port waters.
The waters around Pulau Tekong, off Chek Jawa and off East Coast Park were also observed to be clear of oil patches.
Isolated patches of oil with debris sighted today in the waters just outside SAF Yacht Club and Changi Naval Base were also promptly cleaned up.
However, the statement said that the possibility of small isolated patches of oil with debris surfacing remains.
Further patches of oil slick were observed today in Malaysian waters and in the TSS to the east of Singapore by passing ships and aircraft.
The Malaysian authorities have been informed and the MPA had also offered assistance in line with the Joint Oil Spill Combat in the Straits of Malacca and Singapore.
Members of the public can contact MPA's 24-hour Marine Safety Control Centre at 6325-2489 to report any sighting of oil in Singapore's waters or coastlines.