On 3/10/1999 , the vessel M B 4 (Official Number 393698) was involved in a grounding - not under power (includes drifting) (non-intentional) in PORT OF MONTREAL, QUEBEC,.

The vessel, with 0 persons on board, experienced the incident while engaged in regular operations. Fortunately, the ship was able to continue its voyage. No injuries or fatalities were reported, and there was none pollution.

This incident was officially recorded by Transport Canada on 3/25/1999 . Weather at the time was reported as clear with winds from the N at 0.00 knots.

Following the passage of "CANMAR TRIUMPH", a large ice floe broke adrift and struck the moored tug. Moorings parted and the barge grounded.