The two lighter vessels, one capsized near the Karnaphuli estuary and the other stranded at Sandwip channel on Saturday, could not be salvaged till yesterday afternoon.
The spot, where the lighter vessel MV Feroze Farzana capsized, could not be located due to rough weather and strong current in the sea, Port Radio Control sources said.
At a meeting with the owners of the vessels, the port authority directed them to retrieve the vessels as soon as possible, said CPA Secretary Syed Farhad Uddin Ahmad.
"It is not our responsibility to salvage the vessels as the accidents occurred outside our territory and the port channel is free for movement," he added.
Feroze Farzana with 700 tonnes of cement clinker sank in the Karnaphuli estuary near outer anchorage of the port due to stormy wind in the early hours of Saturday.
Lighter vessel Saima-3 with 1100 tonnes of crude oil remained stranded at a nearby riverbed in the offshore of Sandwip Channel.
High Speed Navigation, owner of the vessel, hired two private rescue boats for salvaging the vessels but failed due to stormy wind.
Mostafizur Rahman, operational executive of the firm, told The Daily Star over phone that they hired an empty oil tanker for unloading the oil from the stranded vessel.