Columbia Pacific Maritime LLC
Call (503) 841-6066 for more information or to schedule a class.

(c) Dennis A. Degner 2006-2011
    Ordinary and Able Seaman Ratings

With only a few exceptions an OS or an AB rating is
required to work on all ocean going commercial vessels
of greater than 100 gross tons.

Able Seaman (AB)
AB is a deck rating that requires qualifying experience,
exams and approved training. The AB rating you
receive is based on your qualifying experience.
  • 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 the deck of vessels
    operating on ocean waters or on the federally
    navigable inland waters of the US.
  • 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.
RFPNW
Rating Forming Part of a Navigational Watch
(RFPNW)
is an STCW endorsement that applies to
Able Seaman who are part of the Navigation Watch on
sea going vessels of greater than 200 gross registered
tons (GRT). This rating is NOT a requirement for
getting any AB rating.

To receive this rating the applicant must complete an
approved course or meet the training and assessment
requirements for the rating. The following forms can be
used to complete the on-board assessments.

Additional Requirements for Able Seaman
Lifeboatman or Lifeboatman Limited is a
requirement for all Able Seaman ratings. To qualify as
lifeboatman the applicant must complete an approved
"Proficiency in Survival Craft" course.

Ordinary Seaman (OS)
OS is an entry level rating that requires NO qualifying
experience, exams or training. This position is
considered an on-the-job training position.
Advancement from OS can be to either the deck
department as AB (Able Seaman) or to the engine
room as QMED (Qualified Member of the Engine
Department).

Courses

For lifeboatman and STCW courses I recommend
Compass Courses