In the past, Brazilian navy also made theories that the spillage may be a result of a “ship-to-ship” transfer that ended unsuccessfully.

The Delta Tankers Ltd. issued a statement according to which

There is no proof of the vessel having stopped, conducted any kind of STS operation (Ship to Ship), oil leaked/spilled, slowed down or veered off course, on its passage from Venezuela to Melaka, Malaysia.

In addition, the company highlighted that they also conducted a full investigation of the material from the cameras and sensors that all their vessels carry as part of their safety and environmental policies, to monitor activity on board, activity alongside the vessel, as well as course alternations, stoppages, speed etc.

As was reported yesterday, November 1, in Delta Tankers' initial statement, their vessel sailed from Venezuela in laden condition on July 19, 2019 heading directly, with no stops at other ports, for Melaka, Malaysia, where she discharged her entire cargo without any shortage

... Delta Tankers added.

The Greek tanker's company categorically denied any involvement to this environmental damage.  According to company's statement, "Bouboulina" sailed from Venezuela in laden condition on July 19, 2019, heading directly to Melaka, Malaysia. The vessel arrived at its final destination and unloaded its entire cargo without any loss whatsoever.

For the records, the spill has spread across all nine states of Brazil's Northeast Region and it is considered to be the worst oil spill in Brazilian history. Volunteer groups, local citizens and more than 1,500 military personnel, partnered in order to clean up the beaches. By the end of October, over 1,000 tons of oil has been cleaned up.