Buyers turning to cheaper bunkering alternatives.

The East Asian port could see higher volumes than the estimated 7 million mt bunkers sold in 2007.

Authority's strict control of barge licences may damage prospects for bunker market growth.

Some estimates say 2007 sales reached 7 million metric tonnes, but others say volumes were much lower.

Shenzhen losing bunker stems to Hong Kong.

Supplier is chartering barges on an "order by order" basis.

Since Annex VI came into force on May 19, 2005, 15 bunker suppliers in Hong Kong have confirmed their compliance with the regulation.

Independent suppliers are racing to bring in double-hulled barges ahead of MARPOL Annex I deadline in 2008.