GULF OF ALASKA - A Coast Guard HC-130 Hercules aircrew from Air Station Kodiak locates the unmanned and unlit Japanese fishing vessel Ryou-Un Maru 170 nautical miles southwest of Sitka in the Gulf of Alaska and deploys a data marker buoy to help track the vessel's drift April 4, 2012. The vessel, set adrift by the 2011 Fukushima earthquake and subsequent tsunami, entered was first noticed by the Canadian Coast Guard and entered U.S. waters April 1, 2012. U.S. Coast Guard video by Petty Officer 1st Class Sara Francis.