Naval system · Unmanned Surface Vessel

ROMULUS 151

Maritime ISR / Modular Mission Support / Autonomous Surface Operations

Also known as: ROMULUS / HII ROMULUS 151 / 151-foot unmanned surface vessel

ROMULUS 151 military drone profile image
ROMULUS 151 — Maritime ISR / Modular Mission Support / Autonomous Surface Operations

ROMULUS 151 overview

ROMULUS 151 is a large unmanned surface vessel associated with Huntington Ingalls Industries, or HII. It is a Naval platform, not an aircraft: HII presents the ROMULUS concept as a modular autonomous maritime vessel able to carry mission equipment on an open deck and operate with reduced or no onboard crew. Potential roles include maritime surveillance, communications, mine-countermeasure support, and other naval missions selected by the installed payload and control architecture.

The public name identifies a 151-foot-class vessel, but a single complete performance sheet covering displacement, draft, speed, endurance, autonomy limits, payload mass, and sea-state certification is Not publicly disclosed. Mission modules, navigation autonomy, remote supervision, and any defensive systems are configuration-dependent. The supplied illustration is interpretative catalog art and is not evidence of a particular radar, weapon, mast, or production fit.

HII publicly presented ROMULUS in 2026 and continued discussing autonomous maritime systems and production plans. Public material supports a technology and mission-integration effort, but does not establish a commissioned naval vessel, complete operator list, deployed weapon configuration, or combat record. As of September 12, 2026, ROMULUS 151 remains best described as a developmental Naval USV rather than an operational aircraft or confirmed fleet combatant.

Armament

No operational weapon fit publicly confirmed; modular naval payloads are mission-dependent

Development and operational timeline

  1. HII publicly presents ROMULUS as a high-endurance family of unmanned surface vessels using its Odyssey autonomy suite
  2. HII announces plans for four ROMULUS 151 vessels to enter production; operational naval service is not established
  3. HII continues ROMULUS production and mission-integration work while configuration and delivery details remain limited
  4. As of September 12, 2026, ROMULUS 151 remains a developmental Naval USV with performance and operator details Not publicly disclosed