USCG-STCW-DECK-L4.1

ECDIS, ARPA and GMDSS: equipment and limitations

USCG-STCW-DECK-M4 · Equipment, Renewal and Service Credit · USCG-STCW-DECK-M4-A ARPA, ECDIS and GMDSS limitations, revalidation, near-coastal limits and service credit.

Equipment-dependent training is the source of most **limitations** on STCW deck endorsements. Read your MMC before you join a new ship.

AI-drafted catalogue content pending SME review. STCW deck endorsements depend on vessel GT, route and equipment and on an individual NMC evaluation of sea service and assessments, so no pathway here is a guarantee of issue; verify with the National Maritime Center and the current NMC checklists before applying.