ITAR & Defense Export Controls Brief

Headline

State Department issues interim final rule narrowing ITAR controls on certain uncrewed underwater vehicles

Executive Summary

The Department of State's Directorate of Defense Trade Controls issued an interim final rule on September 18, 2026, amending USML Category XX(a) to remove certain uncrewed underwater vehicles from ITAR jurisdiction. The rule revises the weight and navigation-capability thresholds that determine which UUVs remain subject to ITAR licensing requirements. It takes effect on October 19, 2026.

Bottom Line

The interim final rule, effective October 19, 2026, revises USML Category XX(a)(10) so that UUVs with a gross weight rating up to 8,000 pounds remain subject to ITAR only if they are specially designed to possess navigation capabilities beyond fixed-waypoint following and see-and-avoid collision avoidance. Vessels exceeding 8,000 pounds with autonomous operation capabilities move to a new paragraph (a)(11). The existing license exemption under ITAR Section 126.9(u) remains available for vessels described in the revised paragraph (a)(10). Cresthaven reading: manufacturers and exporters of sub-8,000-pound UUVs face a classification reassessment against the revised navigation-capability criteria, and those whose products fall outside ITAR coverage after October 19, 2026 become subject to the Export Administration Regulations instead.

Key Regulatory Signals

• Revised Weight and Capability Threshold for ITAR Coverage: The rule revises USML Category XX(a)(10) so that vessels with a gross weight rating up to 8,000 pounds remain on the USML only if they are specially designed to possess navigation capabilities beyond fixed-waypoint following and collision-avoidance maneuvers adhering to see-and-avoid principles. Cresthaven reading: exporters and manufacturers of UUVs in the sub-8,000-pound class should assess whether their products' navigation capabilities bring them within or outside the revised control text.
• New Paragraph Captures Heavier Vessels: The rule adds USML Category XX(a)(11) to describe vessels with a gross weight rating exceeding 8,000 pounds that are specially designed to operate without human interaction for longer than 24 hours or for more than 70 nautical miles, moving that population from the current paragraph (a)(10).
• Existing License Exemption Preserved: The rule does not modify the license exemption at ITAR Section 126.9(u); that exemption remains available for vessels described in the revised USML Category XX(a)(10).
• Broader Autonomous-Capability Review Signaled: The Department states its intent to review ITAR controls on autonomous capabilities, including maritime navigation systems described in USML Category VI, indicating that this rule is not the final word on UUV-related controls. Cresthaven reading: defense-trade practitioners with exposure to Category VI maritime navigation systems face a forthcoming review cycle whose scope and timeline the Department has not yet defined.
• Comment Period Runs Concurrently With Effective Date: The Department requests public comments on or before October 19, 2026, the same date the rule takes effect, and specifically solicits input on further refining ITAR controls on UUVs and on possible enhancements to the license exemption for certain UUV-related activities.

Regulatory Delta

• This rule was undertaken pursuant to a statutory directive to periodically review the items on the USML, with the concurrence of the Department of Defense.
• The core structural change splits the former single paragraph (a)(10) into two paragraphs keyed to the 8,000-pound gross weight threshold and specific navigation-capability criteria. This narrows ITAR coverage for UUVs below that weight threshold.
• Items removed from ITAR jurisdiction transition to the Export Administration Regulations, administered by the Commerce Department's Bureau of Industry and Security. That shift changes the applicable licensing framework for affected UUVs.

Materiality Classification

HIGH — The interim final rule takes effect October 19, 2026, and directly alters the ITAR classification framework for a defined class of UUVs.

Time Horizon

effective — 2026-10-19

Intelligence Outlook

Monitor the Department of State Directorate of Defense Trade Controls for a follow-on rulemaking addressing ITAR controls on autonomous capabilities and maritime navigation systems under USML Category VI, and for any final rule superseding this interim final rule after the October 19, 2026 comment period closes.