The Merchant Mariner Credential (MMC) is a credential issued by the
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...
in accordance with guidelines of the
International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) to
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
seafarer
A sailor, seaman, mariner, or seafarer is a person who works aboard a watercraft as part of its crew, and may work in any one of a number of different fields that are related to the operation and maintenance of a ship.
The profession of the s ...
s in order to show evidence of a mariner's qualifications. It is the standard documentation required for all crew members of U.S. ships for all vessels required to operate with a licensed
Master or
Operator
Operator may refer to:
Mathematics
* A symbol indicating a mathematical operation
* Logical operator or logical connective in mathematical logic
* Operator (mathematics), mapping that acts on elements of a space to produce elements of another ...
, regardless of size. The MMC replaced the
Merchant Mariner's Document {{unreferenced, date=June 2013
__NOTOC__
Under the Seafarers' Identity Documents Convention, 1958, countries with a Merchant Navy or Merchant Marine require identifying credentials for their mariners. The Merchant Mariner's Document (MMD) or Z-ca ...
,
merchant mariner license,
Certificate of Registry, and STCW Certificate.
Origin
The MMC contains professional qualification information previously listed on a merchant mariner license or Certificate of Registry as an officer endorsement, while information previously listed on a Merchant Mariner's Document is included as a rating endorsement. STCW endorsements are still listed as STCW endorsements.
The combining of the mariner credentials was due to the requirement for U.S. mariners to obtain the
Transportation Worker Identification Credential
The Transportation Worker Identification Credential (or TWIC) program is a Transportation Security Administration and U.S. Coast Guard initiative in the United States. The TWIC program provides a tamper-resistant biometric credential to maritime ...
(or TWIC), a
biometric
Biometrics are body measurements and calculations related to human characteristics. Biometric authentication (or realistic authentication) is used in computer science as a form of identification and access control. It is also used to identify ...
security card issued by the
Transportation Security Administration
The Transportation Security Administration (TSA) is an agency of the United States Department of Homeland Security (DHS) that has authority over the security of transportation systems within, and connecting to the United States. It was created ...
(TSA) that all workers in the transportation industry are required to obtain if their work involves access to a security-sensitive area. This reduced the number of documents needed to satisfy manning requirements from five to two: The TWIC and MMC.
Previous to April 15, 2009, applications for credentials still had to be made in person at an REC to provide fingerprints and proof of identity. Now, TSA collects the fingerprints and proof of identity and forwards the information to the Coast Guard's National Maritime Center (NMC). Mariners still have to visit a Regional Exam Center if they are required to take an exam.
The first Merchant Mariner Credential was issued on May 7, 2009, at a meeting of the Towing Safety Advisory Committee. As of early 2015, all active U.S. merchant mariners had been issued MMCs.
The credential was criticized by several groups upon introduction. One organization said that the consolidation reduced the merchant marine officer license, a certificate of professional achievement and status, into a work permit. Another group suggested that the consolidation, together with STCW requirements, the TWIC requirement, and physical evaluation standards, stressed the skilled labor pool, posed too much of an administrative burden, and threatened mariner recruitment, training and retention.
Physical description

The MMC is in the format of a traditional
passport
A passport is an official travel document issued by a government that contains a person's identity. A person with a passport can travel to and from foreign countries more easily and access consular assistance. A passport certifies the perso ...
book. Like a passport, the cover is imprinted with the
Great Seal of the United States and the text ''United States of America''. Unlike a passport, the cover is red-maroon in color (rather than the four colors used for US passports or travel documents: dark blue, black, maroon, and gray) and the text ''Merchant Mariner Credential'' appears in place of ''Passport''. Also, the cover does not hold a
contactless smart card
A contactless smart card is a contactless credential whose dimensions are credit-card size. Its embedded integrated circuits can store (and sometimes process) data and communicate with a terminal via NFC. Commonplace uses include transit ticke ...
chip as do newer
biometric passport
A biometric passport (also known as an e-passport or a digital passport) is a traditional passport that has an embedded electronic microprocessor chip which contains biometric information that can be used to authenticate the identity of the p ...
s (ePassport).
The MMC has twenty pages, exclusive of the front and back covers, sequentially numbered like the visa pages of a passport. Basic identity document data is page 3. The MMC is not a passport, but it is a
Seafarer's Identity Document and the format of the data page complies with the
ICAO
The International Civil Aviation Organization (ICAO, ) is a specialized agency of the United Nations that coordinates the principles and techniques of international air navigation, and fosters the planning and development of international ...
''Machine Readable Travel Documents'' specifications for
machine-readable passport
A machine-readable passport (MRP) is a machine-readable travel document (MRTD) with the data on the identity page encoded in optical character recognition format. Many countries began to issue machine-readable travel documents in the 1980s.
Mos ...
s. Rather than the document type of P used with US government issued passports, a document type of PG is used for MMCs.
License information in the form of domestic and international endorsements begin on page 4 of the MMC and continue as many pages required to list competencies held by the mariner. Domestic (
46 CFR 10) and International (
STCW
International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) sets minimum qualification standards for masters, officers and watch personnel on seagoing merchant ships and large yachts. STCW was adopt ...
Convention) license information are printed on separate pages. When the mariner gains a new competency while holding an already valid MMC, the new competency is printed on a sticker which is placed on the next available blank page in the MMC, much like a
visa in a passport. Thus new MMCs are only produced for original and renewals; raises in grade, removal or limitations, or addition of endorsements do not require a new credential.
The mariner's reference number and the MMC's serial number are printed on the bottom of every page containing endorsement information and on all stickers issued to be added. The endorsement pages are overprinted with a transparent plastic 'watermark' with the words 'Merchant Mariner Credential' and the seal of the United States.
MMC serial numbers are nine digits long, as required for a passport book, and padded with leading zeros.
The MMC has a clear plastic holder for the mariner's TWIC card on the inside of the back cover.
The MMC is considered a form of
REAL ID and is therefore accepted as proof of identity by the TSA.
See also
{{Portal, Transport
*
Merchant Mariner's Document {{unreferenced, date=June 2013
__NOTOC__
Under the Seafarers' Identity Documents Convention, 1958, countries with a Merchant Navy or Merchant Marine require identifying credentials for their mariners. The Merchant Mariner's Document (MMD) or Z-ca ...
*
STCW
International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) sets minimum qualification standards for masters, officers and watch personnel on seagoing merchant ships and large yachts. STCW was adopt ...
*
Transportation Worker Identification Credential
The Transportation Worker Identification Credential (or TWIC) program is a Transportation Security Administration and U.S. Coast Guard initiative in the United States. The TWIC program provides a tamper-resistant biometric credential to maritime ...
*
United States Merchant Marine
United States Merchant Marines are United States civilian mariners and U.S. civilian and federally owned merchant vessels. Both the civilian mariners and the merchant vessels are managed by a combination of the government and private sectors, an ...
*
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...
References
External links
USCG National Maritime Center- Official website for MMC info
U.S. Coast Guard's Notice of Proposed Rulemaking for the Merchant Mariner Credential
United States admiralty law
United States Merchant Marine
Professional titles and certifications
Identity documents of the United States