Ключевые слова: barge, boats, boom, bottom, bucket, channel, cleaning, coastline, construction, construction machinery, crane, crane boom, dig, digging, dragline, dredge, dumpster, engineering, environmental, equipment, filter, gravel, great lakes, harbor, heavy machinery, industrial, industrial ship, industry, lake michigam, load, loading, machinery, michigan, nautical vessel, platform, port, sand, scoop, scooping, ship, shore, towboat, water, waterway, working,