Now that I have your attention here is a list of the courses offered by ColPac for the remaining 2021 spring schedule.

Deck Rating AB or OS
In conclusion the OS is an entry level apprentice rating. While the AB is a journeyman rating. In contrast, holding a Master or Mate does not qualify you as an AB. Your MMC must say AB to work as a deckhand on seagoing vessels 100 GRT and greater. The biggest mistake that a mariner can make is NOT getting an AB. The result being that too many career opportunities are missed without it.
May 2021 ColPac eNews
This May 2021 ColPac eNews issue contains a new class announcement. A summary list of jobs that have been available…