Modular marine systems

Building the technologies that make persistence possible.

Hidden Gradient develops modular propulsion, buoyancy, control, sensing, payload, and power technologies for long-duration surface and subsurface platforms.

Persistence achieved by balancing propulsion, power, payload and sensing, control and autonomy, thermal management, design, and integration

Product platform

Modular technologies. Integrated around the mission.

Each module addresses a critical driver of range, persistence, controllability, or payload utility. Together, they form a flexible development platform for next-generation marine systems. Current work includes prototype evaluation and field testing of modular payload, actuation, and platform technologies.

Propulsion modules

Waterjet and propulsor technologies developed around efficiency, controllability, vehicle integration, and mission endurance.

Buoyancy & depth-control modules

Buoyancy engines, displacement mechanisms, depth and trim control, and architectures for glider-class platforms.

Explore DepthPod

Attitude & pointing modules

Internal mass-shifting, momentum-exchange mechanisms, actuators, and control surfaces for platform and payload orientation.

Sensing & mission payloads

Modular payload technologies for signal collection and interpretation, environmental sensing, and mission-specific integration.

Power & energy modules

Compact power, mission energy management, and duty-cycle technologies designed to extend useful operation.

Integrated platform architectures

Hydrodynamics, propulsion, control, payloads, and energy balanced around a complete surface or subsurface mission.

DepthPod

Standalone underwater sensing or integrated vehicle depth control. A laboratory prototype has demonstrated closed-loop depth holding in water, with test data supporting high-fidelity model validation.

Explore DepthPod

Multi-domain sensing & signature control

Sense, shape, and understand the signal environment.

Development work spans sensing, acoustic and magnetic signature control, resonance modeling, signal collection and interpretation, and protective counter-UUV applications.

Public descriptions remain deliberately non-operational. Specific approaches are discussed only within an appropriate customer and security context.

Marine technology development

Explore a platform, payload, or integration opportunity.

Discuss a marine opportunity