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Greensea IQ

Navigation and autonomy software for subsea robots

Raised to date

$18.7M

of $18.7M offered across 1 Form D filing

Investors
45
Last filed
Apr 23, 2026

About

Greensea Systems, Inc. (dba Greensea IQ) builds navigation, control and autonomy technology for marine and subsea robotics. Founded in 2006 and headquartered in Richmond, Vermont, it develops the OPENSEA open-architecture robotics operating platform, the Bayonet line of amphibious seabed crawler vehicles, and the EverClean robotic ship-hull cleaning service. The company is dual-use, supplying U.S. Navy and Marine Corps programs including explosive ordnance disposal and combat diving alongside commercial maritime, offshore energy and scientific customers. It has delivered more than 1,300 OPENSEA-based systems and also operates offices in Plymouth MA, San Diego CA, Houston TX, Rockledge FL and Miami FL.

OPENSEA is a hardware-agnostic, open-architecture operating platform for marine robots, so navigation and autonomy can be layered onto third-party vehicles rather than locking customers into one manufacturer's stack.

Funding

  • EquityFiled Apr 23, 2026Form D/A
    $18.7M/ $18.7M

Product

OPENSEA

Marine robotics software platform

An open-architecture, hardware-agnostic robotics software platform for marine and subsea vehicles, providing vehicle control, navigation and autonomy as a common base that developers and integrators build on.

  • Open, hardware-agnostic architecture for third-party marine and subsea vehicles
  • Vehicle control, navigation and autonomy in one framework
  • Post-mission analysis tools

Built for

Defense maritime programs (U.S. Navy and U.S. Marine Corps explosive ordnance disposal, combat diving and ship hull robotics) plus commercial shipping, offshore energy and ocean science operators

People on file