The professional credential for commercial towing on inland waterways and coastal waters.
100
questions
120 minutes
time limit
70% overall / 90% COLREGS
passing score
⚠ Includes Inland Navigation Rules and Western Rivers rules not on coastal exams
Master of Towing is one of the most demanding USCG credentials — requiring not just the standard base license knowledge but deep expertise in towing operations, towing vessel stability, and the special rules governing inland waterways and the Western River system. This license is the path into commercial tugboat and towboat operations.
Who this is for
Tugboat captains, river pilots, towboat officers, and commercial mariners working in harbor towing or inland waterway freight.
50 free practice questions and timed exam simulations — no credit card needed. Upgrade to unlock our constantly growing question bank and adaptive practice.
All USCG license levels and endorsements covered under one subscription.