The 100 meter long self-propelled barge Alexander collided with the 85 meter long, 1461 dwt self-propelled tanker-barge Mercator on Lake Markermeer, Netherlands. The Alexander suffered damage a one meter hole to its hull above the waterline. The Mercator suffered little to no damage. There were no injuries on either vessel. The Alexander was escorted to Lelystad by authorities. The Alexander had a cargo of sand at the time of the incident. No reports of pollution being released.