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NAU Snare

NAU Snare is a diver- or ROV-deployable lifting and recovery device that can be fitted to any ROV manipulator, attaching to steel, aluminium or GRP for underwater or on-land recovery tasks to 300m.

The Challenge

Secure and move unknown underwater objects quickly—without risky rigging or unreliable attachment.

During salvage, search-and-recovery, and object interrogation tasks, operators are often working against time in low visibility, restricted access, and dynamic conditions (currents, surge, shifting loads).

The challenge isn’t just finding the object—it’s making a safe, dependable attachment point without putting divers unnecessarily close, and without relying on improvised slings or hooks that can slip, snag, or fail under load.

Teams also need an approach that works across different target materials (steel, aluminium, GRP) and shapes, and that can be executed using the ROV they already have, rather than a specialist platform. Once attached, the load may exceed a single device’s safe working capability, so operators need the option to scale the lift by deploying multiple units.

And critically, the system must remain practical and safe to prepare, including being primed prior to deployment and triggered reliably on contact, while keeping the overall method cost-effective for repeat use.

NAU Snare Key features & benefits

What NAU Snare solves

NAU Snare provides a safe, compact, silent, non-magnetic attachment and lifting method that can be primed before deployment and triggered on contact, supporting controlled recovery, dragging, and relocation of underwater objects (including floating/drifting items) using common ROVs such as VideoRay platforms.

Depending on the material attached to, it can lift up to 800kg, supporting salvage and recovery operations.

Designed for deployment by diver or ROV, and can be fitted to any ROV manipulator.

Uses commercially available powder actuated cartridges; supplied inert and designed to be safe and cost effective.

Fully modular “toolbox” approach; can be buoyancy compensated to neutral, and multiple units can be deployed if load exceeds SWL.

NAU Snare Key Specifications

Performance Parameters

A compact, non-magnetic, contact-triggered lifting device engineered for subsea operations to 300m, with materials, nail type and dimensions optimised for ROV handling and reliable attachment.

Overall dimensions

L 250mm; W 95mm; H 160mm

Weight (in air)

Approx. 1.7kg

Materials

Rigid plastic, stainless and aluminium (non-magnetic construction)

Operational depth

0–300m

Nail type

316 stainless

Initiation method

Triggered upon contact (forward facing trigger)

Gallery

The bigger picture

A cost-effective, ROV-manipulator-compatible underwater lifting device that creates a reliable on-contact attachment to common marine materials, with neutral buoyancy capability and the option to scale lift capacity by deploying multiple snares.

Contact us

Get in touch to learn more about NAU Snare

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Built for high-risk and mission-critical operations, our systems provide adaptable, field-ready solutions that enhance safety, control, and operational effectiveness.