C) Vessels that operate on waterway routes amongst mainland’s coasts and islands inside the territorial waters of Vietnam; three. “tugboat” usually means a boat designed and registered to tow and assist vessels in entering and leaving wharves, docks and mooring buoys. Công Ty TNHH Thương Mại Và Dịch Vụ Vận https://gastonx974sbj1.blog-a-story.com/profile