The company is working with 11 off-shore vessels out of which six vessels they received from Mumbai-based Great Offshore Limited.
The anti-pollution operation by the Coast Guard is on the process, said shipping's chief nautical adviser MM Saggi.
According the sources, containing the oil-spill would be difficult because of tidal condition.
"Coast Guard officials are working hard to find out the leakage as the oil-spill is a major concern as one of the vessels was carrying over 2,000 tonnes of oil. Presently, the coast guard officials are on search and rescue mode," said Saggi.
Two Panamanian cargo ships MSC Chitra and Merchant Vessel Khalija collided on Sunday, Aug 8 off the Mumbai coast causing an oil-spill from one of the vessels.
Thirty-three crew members, including two Pakistanis, were rescued following the incident.