The April 25th Call of NYK Rumina seems to have drawn the attention of the CBSA, which appeared to have a dive boat alongside. A Crewman can be seen on the deck, and a line is running from the Rumina to the CBSA’s Vessel.
NYK Rumina sailed on Schedule, so its unclear if the inspection revealed anything, nor is it known if the vessel was specifically targeted, or if this was part of normal customs operations.
The CBSA uses divers and ROV’s to search the underside of ships for Contraband. In a 2018 case, smugglers used divers to pack the sea chest of a Maersk vessel. Divers attempted to recover the drugs in Montreal, but abandoned the attempt, and were eventually caught in Halifax.