towboat

1. For example, permits could be issued to travel through locks at specified times, and those permits could be traded among towboat captains.
   比如，可以通过许可证的发放将船闸通行限定在指定时间内，而且许可证也可以在拖船船长之间进行交易。
2. Diagnosis for faults of rotary propulsion apparatus operating system in towboat and general methods to deal with it
   拖轮全回转式推进装置操纵系统故障判断和处理的一般方法
3. The Status Quo and Development Tendency of Towboat in Jiangsu Province
   江苏省拖船现状和发展方向
4. Test of the optimum routing and service for the operation of ocean towboat in winter season
   冬季远洋拖轮作业的最佳航线服务试验

noun

1. a powerful small boat designed to pull or push larger ships

   Synonym:    tugboattugtower