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How to Become an Ordinary Seaman (OS): Your Guide to a Starting a Maritime Career

How to Become an Ordinary Seaman (OS): Your Guide to a Starting a Maritime Career

by Rebekah Carsey | Nov 26, 2025 | USCG Licensing & Credentials

The maritime industry offers a rewarding career path, and the first step aboard a large vessel for many aspiring mariners is becoming an Ordinary Seaman (OS), also known as an Ordinary Seafarer. The OS rating is the foundational, entry-level position that requires no...

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How to Become an Ordinary Seaman (OS): Your Guide to a Starting a Maritime Career