Mate of 500-1600 GRT upon Oceans. This is an advanced-level merchant mariner credential. The general requirements for this credential are TWIC Card (Identification, Fingerprints, Citizenship, Social Security number, etc), CG-719B Application, NDR Consent & Check, Oath, 3 letters of recommendation, photograph (supplied by TSA), SSEB Screening complete, age of 21 or over, CG-719K Physical Exam, Medical Tab in MMLD, Drug Testing Compliance, Mariner Fees, and Sea Service Letters or Discharges. Sea service requirements include recency- 90 days in the past 3 years on vessels of appropriate tonnage. MATE 1600, 1080 days of service on Ocean or Near Coastal waters, of which 540 days must be on Ocean or N/C waters, and 360 days of service on vessels over 100 GRT, and 360 days of service as Master, Mate, or equivalent supervisory position while holding an Officer endorsement as Master, Mate, or Master/Mate Towing vessels, and 180 days of the service as Master, Mate, or equivalent supervisory position, must have been on vessels over 100 GRT; or 1080 days of service on Ocean or Near Coastal vessels over 200 GRT, and 180 days of service as AB. MATE 500, 720 days of service on Ocean or Near Coastal waters, of which 360 days must be on Ocean or N/C waters, and 360 days of service as Master, Mate, or equivalent supervisory position while holding an Officer endorsement as Master, Mate, or OUPV, and 80 days as Master, Mate, or equivalent supervisory position, on vessels over 50 GRT.
