| tugboat be | 0.59 | The other two tugboats were nearby. | ||
| tugboat tow | 0.46 | Six tugboats are towing the engineless, rudderless Varyag through the strait. | ||
| tugboat sink | 0.39 | A tugboat also sank off Georgia during the storm. | ||
| tugboat collide | 0.33 | A tugboat collided with a cargo ship Monday on the Elk River and sank. |