With the purchase of the refinery came a small towboat and oil barge. Lansdowne was thereafter used as a barge, pushed by a towboat, until her final retirement. The Carbon Pro is an inboard ski towboat, geared towards tournament ski competition performance. Lone Star is a wooden hull, steam-powered stern-wheeled towboat in LeClaire, Iowa, United States. It served as a towboat and inspection vessel until decommissioned in 1993. It is the largest diesel towboat on the river. Elizabeth M was a towboat that sank in the Ohio River on January 9, 2005. She was decommissioned as a towboat in 1948. Horizon expended its business through the 2000s, delivering vessels to defense, fishing, and towboat customers. He also worked as a towboat pilot on the Mississippi, Illinois, and Tennessee rivers. Fleet tug- Or Harbor Boat- small towboat used for fleeting. That year an Enzo was the official towboat of the World Wake Surfing Championship. The towboat must be capable of maintaining the proper speed.