USCG License Endorsements
The following endorsements may be added to licenses of 200 tons and
less.
Assistance Towing Endorsement
Any USCG license of 200 tons or less, including an OUPV license, may be
endorsed for Assistance towing. This endorsement authorizes the holder
to engage in commercial assistance towing within the scope of their
license. Mariners with licenses for towing vessels or with licenses of 500
gross tons or more may engage in commercial assistance towing without
this endorsement.
Columbia Pacific Maritime Courses
Assistance Towing course
Any applicant who has successfully completed your 4-hour Assistance
Towing course and presents your Certificate of Training at a Regional
Exam Center WITHIN ONE YEAR of the completion of training, will
satisfy the examination requirements of 46 CFR 10.482(b) for an
Assistance Towing endorsement to any license up to Master Not More
Than 200 Gross Tons.
Auxiliary Sail Endorsement
An endorsement for sail or auxiliary sail may be added to any master or
mate license, it may not be added to an OUPV license. To qualify for an
auxiliary sail endorsement the license holder must document sea service
experience on sail or auxiliary sail vessels.
The amount of sea service experience depends on the endorsement
requested.
- Master near coastal requires 12 months experience
- Master inland requires 6 months experience
- Mate near coastal or inland requires 3 months experience
Columbia Pacific Maritime Courses
Auxiliary Sail course
Any applicant who has successfully completed your 4-hour Auxiliary Sail
course and presents your Certificate of Training at a Regional Exam
Center WITHIN ONE YEAR of the completion of training, will satisfy the
examination requirements of 46 CFR 10.482(b) for an Auxiliary Sail
endorsement to any license up to Master Not More Than 200 Gross Tons.

