Chief Mate Unlimited

Career Path Requirements

Looking to obtain your Chief Mate Unlimited/STCW II/2 License from the US Coast Guard? Take your courses with Northeast Maritime Institute and follow this guide.

Minimum Age Required

  • 21 years

Sea Service Requirements

360 days of service as OICNW on Ocean/ NC steam or motor vessels while holding an endorsement as 2nd Mate.

Recency: 90 Days in the past 3 years on vessels of appropriate tonnage

Tonnage Requirements


  • All required service is on vessels of 100 GRT, AND
  • 50% of the required service is on vessels over 1600 GRT


  • Limited to max tonnage on which 25% of experience is obtained, OR
  • Limited to 150% tonnage on which 50% service spent WHICHEVER GREATER.

*May be issued if 50% of the required service is not on vessels over 1600 GRT; however, ALL required service MUST be on vessels over 200 GRT.

Application Requirements

  • Completed USCG Application including sea service documentation
  • USCG Physical Examination
  • USCG Drug Test
  • Transportation Workers Identification Card (TWIC)
  • USCG Examinations

Training Requirements (to meet STCW II/2 requirements)

  • Medical Care Person in Charge
  • Advanced Firefighting (or Refresher/Revalidation)
  • Radar Observer or Radar Recertification
  • Leadership and Managerial Skills
  • Basic Training (or Refresher)
  • Advanced Shiphandling
  • Advanced Stability
  • Advanced Meteorology
  • Search and Rescue
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