An investigation is under way after a loaded grain barge was found to be adrift near the Port of Vancouver over the weekend, and authorities say that this appears to have been an intentional act. The crew of a tugboat came upon the drifting and unlit 252-foot barge, floating on the river between Vancouver and Portland. Tidewater Barge Lines reported the barge as missing Friday night; the Coast Guard says that it appears that ratchets that are used to hold the barge at its mooring had intentionally been loosened. The barge had been scheduled for unloading at the Port of Vancouver, which is currently embroiled in a labor dispute with the International Longshore and Warehouse Union. ILWU spokesperson Jennifer Sargent says that the union had nothing to do with this incident. The investigation is continuing.