SINGAPORE-- An oil tanker involved in a collision with the USS John S McCain to the east of Singapore early on Monday was carrying almost 12,000 tonnes of fuel oil, but there was no oil spill, said a crew member of the Alnic MC.

"We are carrying 11,987 tonnes of fuel oil. There is no oil spill. We were carrying fuel oil from Taiwan to discharge to Singapore ... We are proceeding to Raffles Reserved Anchorage where the owners will investigate the matter. There was some damage to the valve," he said via telephone.

The Maritime and Port Authority of Singapore (MPA) lists the Raffles Reserved Anchorage to the South of Bukom Island to be reserved for "vessels requiring emergency repairs and damaged vessels or as directed by the Port Master".

Ten sailors are missing and five are injured from the USS John S McCain after the collision at 5.24am, while the US guided-missile destroyer was transiting to a routine port visit in Singapore, according to a statement by the US Navy.

Both Singapore and Malaysian authorities have sent ships and aircraft to assist the US Navy in the search and rescue mission.

The Alnic MC sustained damage to her fore peak tank 7m above the waterline, with no crew injuries, and both ships were on their way to Singapore for damage assessment, the MPA said in a statement.

"There is no report of oil pollution and traffic in the Singapore Strait is unaffected. MPA is investigating the incident," the authority said.

The merchant vessel Alnic MC is described as a 180m long Liberian flagged oil and chemical tanker on the MarineTraffic website. It has a deadweight of more than 50,000 tonnes.

According to VesselsValue, which provides shipping and maritime data, the Alnic MC was scheduled to arrive in Singapore at 11am Monday.

The vessel's position at 6.58am Singapore time was at latitude 1.42018 and longitude 104.4326, according to VesselsValue.

It added that the vessel is owned by a Greek company Brave Maritime Corporation and is reportedly worth US$17.36 million (S$23.6 million).