USCG-DECK-RATINGS-L1.2

Ordinary Seafarer: the entry-level MMC

USCG-DECK-RATINGS-M1 · The deck rating structure · USCG-DECK-RATINGS-M1-A The 2025 renaming, Ordinary Seafarer and where manning law requires rated deck crew. 3 lessons.

The first endorsement on most deckhands' MMCs. It needs **no professional examination** and **no sea service**, and it authorises less than people think.

AI-drafted catalogue content pending SME review. Able Seafarer sea service figures changed by statute on 18 December 2025 and the CFR and NMC checklists had not been conformed at drafting, so confirm current day counts, exam modules and assessment rules; verify with the National Maritime Center before applying.