The car carrier City of Amsterdam collided with the container ship Conmar Bay in the Kiel Canal, Germany, on Saturday at around noon.
The vessels were transiting the North-Baltic Sea Canal in opposite directions when Force 9 winds forced the westbound car carrier across the path of the container ship.
Both vessels were breached, but remain afloat. The 2,779dwt, 100-meter (328-foot) City of Amsterdam is reported to have a gash around 50 meters (164 feet) long above the waterline, portside. The 150-meter (492-foot) Conmar Bay is reported to have a 30-meter (98-foot) gash above the waterline.
There are no reports of injuries, but several containers went overboard.
A tug has assisted City of Amsterdam to port, and Conmar Bay has sailed on to Kiel.
The vessels will be inspected before being allowed to continue their voyages.