Able Body Seaman, Ordinary Seaman, Able Seafarer Deck
Information

    With only a few exceptions a Merchant Mariner Credential (MMC)
    National rating endorsement as OS or AB is required to work on all
    ocean going commercial vessels of greater than 100 gross tons.

  • Ordinary Seaman is an entry level rating that applies to both deck
    and engine departments. This rating that does not require any sea
    service experience or training courses.

    To qualify for an OS the applicant must demonstrate that they are
    physically fit for duty, pass a USCG/DOT Drug Screening, and
    complete the application form requesting the National Rating of OS.
    After gaining the required experience the mariner may advance from
    OS to Able Seaman (deck department) or Qualified Member of the
    Engine Department (QMED).

  • Able Body Seaman or Able Seaman is an MMC National deck
    rating that is the equal to journeyman. This MMC deck rating requires
    demonstration of knowledge of the Rules of the Road, navigation,
    seamanship, and safety; and a practical demonstration of
    marlinespike seamanship skills. To qualify as AB the applicant must
    also complete an approved Proficiency in Survival Craft Training
    course for the rating of either Lifeboatman or Lifeboatman Limited.

    The MMC National AB rating that the applicant is issued depends on
    their qualifying experience. Advancement from one AB rating to
    another is based on qualifying sea service experience alone, no
    additional exams or skill demonstrations are required. The
    professional requirements for the National AB ratings are published
    in Title 46 CFR Parts 12.401 through 12.409:

  • AB Unlimited requires 1080 days of qualifying sea service
    experience on the deck of vessels operating on ocean waters.

  • AB Limited requires 540 days of qualifying sea service experience
    on the deck of vessels greater than 100 gross tons operating on
    ocean waters.

  • AB Special requires 360 days of qualifying sea service experience
    on vessels operating on the federally navigable inland waters of the
    US or on ocean waters.

  • AB Fishing requires 180 days of qualifying sea service experience
    on the deck of vessels operating on ocean waters or the federally
    navigable inland waters of the US.

  • AB OSV (Offshore Supply Vessel) requires 180 days of qualifying
    sea service experience on the deck of vessels operating on ocean
    waters or on the federally navigable inland waters of the US.

  • AB Sail requires 180 days of qualifying sea service experience on
    the deck of sailing vessels operating on ocean waters or on the
    federally navigable inland waters of the US.

Able Seafarer Deck

    The 2010 Manila Amendments to the STCW convention established
    an STCW endorsement equivalent to the MMC Rating of Able
    Seaman. This endorsement is called Able Seafarer Deck. US
    mariners holding a the rating endorsement AB should check to see if
    they also qualify for this new STCW endorsement.

Courses, Checklists, and Related Information

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Columbia Pacific Maritime LLC
is a US Coast Guard approved
Maritime Training School located in
Portland, Oregon.

We provide USCG approved courses
for professional deck credentials.

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Class & Scheduling Information
Please call Pat at (503) 841-6066
for class availability and scheduling
information.

License & Application Questions
Please Email Dennis your license or
application questions. I will generally
respond the same day.

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Morticia Addams stated that normal is an
illusion; giving the example that what is
normal for the spider is chaos for the fly.

On the first day of a professional mariner
course you will feel like the fly. My job, as
the instructor, is to relate the information to
you in a manner so that you see it as the
spider.

Dennis A. Degner, Director & Instructor
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Columbia Pacific Maritime LLC
Dennis A. Degner (c) 2016
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