CG-719SSmall Vessel Sea Service Form
Issued by U.S. Coast Guard – National Maritime Center
CG-719S documents sea service on small vessels toward Merchant Mariner Credential eligibility — vessel name and number, gross tonnage, propulsion, waters navigated, dates, and the capacity served. Under 46 CFR 10.232(a)(4), owners of vessels under 200 GRT may attest to their own service with proof of ownership.
Also known as: Sea service form · USCG 719S · Sea time form · Small boat sea service
Key facts
Employees complete · Employers file · Submitted to regulator
- When it’s used
- Submitted with original, renewal, or raise-of-grade MMC applications when sea service is not documented by certificates of discharge or company service letters — typical for owner-operators, charter captains, and crew of small commercial or recreational vessels.
- Who fills it out
- The mariner completes one form per vessel. The vessel owner, operator, or master attests to the service; owner-operators self-certify with proof of ownership.
- Who signs
- Vessel owner, operator, or master. The applicant signs as attesting official only when they own the vessel.
- Where it goes
- Include with the mariner's MMC application packet to the USCG National Maritime Center.
- Electronic submission
- Supported — accepted via the NMC ASAP portal and email.
Sources & citations
Every form we publish traces to an authoritative government source. We cite the issuing agency, the underlying statute, and the operative regulation so you can verify scope and signing authority for your own records.
Issuing agency
USCG National Maritime Center — Forms
Last verified 2026-07-07
VerifiedOpenRegulation
46 CFR §10.232 — Sea service
Last verified 2026-07-07
VerifiedOpen
Attribution. Form authored and maintained by the U.S. Coast Guard National Maritime Center. BlueHive does not modify the underlying government PDF; the file you download is the agency original.
Related forms
These forms are commonly filed alongside or in place of this one.
- USCG Mariner
CG-719B — Application for Merchant Mariner Credential (MMC)
CG-719B is the base application every mariner files with the National Maritime Center for a Merchant Mariner Credential — original issuance, renewal, raise of grade, new endorsement, or duplicate — and for a Medical Certificate when applying concurrently. The rest of the application packet (medical, drug test, sea service) attaches to this form.
View form - USCG Mariner
Merchant Mariner Credential (MMC) Application Packet
The MMC application packet is the complete submission the National Maritime Center evaluates: the CG-719B application plus the medical evaluation (CG-719K or CG-719K/E), drug-test documentation (CG-719P or random-program letter), sea service evidence (service letters, discharges, or CG-719S), TWIC proof, training certificates, and fees. The NMC publishes per-endorsement checklists covering age, drug testing, examination, fees, sea service, and TWIC requirements.
View form
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