USCG Reinforces Notification Protocols for Unmanned Vessel Operations
The United States Coast Guard has issued a formal advisory to maritime stakeholders following repeated observations of unmanned maritime system (UMS) deployments in critical navigation zones along the U.S. West Coast.
According to the USCG, multiple UMS operations have been detected within or adjacent to primary port approaches—including those serving Los Angeles, Long Beach, San Francisco, and Seattle—without the required prior coordination with the relevant Captain of the Port (COTP).
The Coast Guard emphasized that failure to provide advance notification undermines situational awareness, increases collision risks, and may compromise the safety of commercial shipping, naval assets, and search-and-rescue operations.
Regulatory Framework and Industry Responsibilities
Under existing federal regulations, all unmanned vessel operations in U.S. navigable waters must be reported to the cognizant COTP at least 48 hours in advance. This requirement applies regardless of vessel size, propulsion method, or operational intent.
- Notification must include:
- Precise operational boundaries (latitude/longitude)
- Duration of deployment
- Contact information for the responsible party
- Emergency response protocols
- COTP zones may impose additional restrictions based on local traffic density, security conditions, or environmental factors.
Operational Risks and Mitigation Measures
The USCG highlighted several safety concerns associated with uncoordinated UMS activity:
- Collision hazards: Unmanned platforms may drift into shipping lanes or anchorages, particularly in low-visibility conditions or during adverse weather.
- Interference with SAR operations: Unreported systems can obstruct search patterns or damage response equipment.
- Security vulnerabilities: Unidentified vessels may trigger false alarms or divert resources from legitimate threats.
Maritime operators are advised to integrate UMS deployments into existing voyage planning processes and maintain continuous communication with the National Vessel Movement Center (NVMC) where applicable.
Enforcement and Next Steps
The Coast Guard has indicated that non-compliant operators may face civil penalties, operational restrictions, or criminal prosecution under 33 CFR Part 160 and other applicable statutes. Industry stakeholders are encouraged to review USCG Navigation and Vessel Inspection Circular (NVIC) 05-17 for detailed guidance on UMS compliance.
For immediate coordination, COTP contacts and regional notices to mariners are available through the USCG Homeport portal.