HII says autonomous ROMULUS-25 Watcher USV meets DIU PRIME prototype test goals

• Huntington Ingalls Industries completed DIU’s PRIME prototype, validating its autonomous Watcher small USV based on the ROMULUS-25 platform.
• Two vessels delivered in December 2025 passed sea tests, including government-led autonomy assessments, seakeeping evaluations, performance trials, and degraded-environment testing.
• DIU cited autonomous long-range transit, loitering, threat monitoring, then sprint interdiction of noncooperative vessels as meeting Navy operational needs.
• Program outcome positions the design for a potential production transition under Other Transaction Authority prototype agreements.
• ROMULUS-25 is designed for up to 1,000-pound payloads with range up to 1,000 nautical miles, using the Odyssey Autonomous Control System.

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