Certification: Master of Towing Vessels-Limited

100 Forbes Drive Martinsburg, WV 25404-7120

Master of Towing Vessels- Limited. This is a mid-level merchant mariner credential. The general requirements for this credential are TWIC Card (Identification, Fingerprints, Citizenship, Social Security number, etc), CG-719B Application, NDR Consent & Check, Oath, 3 letters of recommendation, photograph (supplied by TSA), SSEB Screening complete, age of 21 or over, CG-719K Physical Exam, Medical Tab in MMLD, Drug Testing Compliance, Mariner Fees, Sea Service Letters or Discharges, and recency- 90 days in the past 3 years on vessels. Service requirements include if SNM holds an endorsement as Mate (Pilot) of Towing Vessels; s/he may have: Master of Towing Vessels (Limited), added to their MMC, for a limited local area, designated by the local OCMI, within the scope of their current route; or 1080 days of service, including 540 days on Tow Vessels as a Limited Apprentice Mate (Steersman), of which 90 days must have been on the particular limited local area, designated by the local OCMI, within the scope of their current route, and completion of a TOAR. There is no examination for this credential.

More than two years of education or training after high school required?
More than two years of work experience required?
Oral or Written Exam Required?
Renewal Required?
Every 5 Year(s)
Renew through Continuing Educational Units(CEU)?
Renew through Re-Examination?
Renew through Continuing Professional Development(CPD)?
Does applicant have choice of at least two options from above for renewal (CEU, CPD, or exam)?


Your local Regional Exam Centers external site(REC) provide valuable resources toward obtaining a Merchant Mariner Credential (MMC).


The certification has an education level of an Associates of Arts or Associates of Sciences degree or higher and has a work experience requirement of more than 2 years, or requires obtaining a ‘core’ level certification from the same organization.

  • This certification is related to military occupational specialties.