Underwater Air Chainsaw 4 HP

Underwater Pneumatic Chain Saws (with Chain Guard – 4 HP)

The 4 HP Underwater Pneumatic Chain Saw series (Model 5 1008 Series) is engineered specifically for commercial divers and marine contractors executing heavy submerged cutting tasks. Equipped with a dedicated underwater exhaust valve system, these saws operate reliably in fully submerged marine environments, providing high-torque cutting through waterlogged pilings, timber docks, composite materials, and submerged structural framing without electrical shock hazards or combustible fuel emissions.

Featuring an integrated operator chain guard and a rugged, corrosion-resistant build, this series ensures diver safety and dependable control during demanding underwater demolition, salvage, and harbor infrastructure maintenance.

Key Benefits

• Specialized Subsea Exhaust Valve Design

  Engineered with a dedicated marine exhaust system that ensures consistent pneumatic discharge and prevents backflow during deep or shallow submerged cutting.

• Integrated Protective Chain Guard

  Protects commercial divers from chain deflection, kickback, and displaced debris during low-visibility underwater operations.

• High-Torque 4 HP Pneumatic Drive

  Delivers high continuous cutting force to power smoothly through dense waterlogged hardwoods, creosote-treated timber pilings, and composite marine fenders.

• Zero Electrical or Thermal Hazard

  Provides safe, spark-free cold-cutting under water, eliminating electrical hazards and risks near submerged gas pockets or fuel-contaminated harbors.

• Resilient Marine-Grade Build

  Constructed from corrosion-resistant alloys and heavy-duty internal seals designed to withstand saltwater immersion, sand slurry, and subsea pressure.

• Balanced Underwater Ergonomics

  Optimized center of gravity and power-to-weight profile minimize diver fatigue and provide precise directional control in turbulent currents and zero-visibility conditions.

Applications & Usage

• Commercial Pier & Wharf Maintenance: Sectioning and trimming degraded timber pilings, fender systems, and subsea cribbing.
• Harbor & Seawall Demolition: Sizing and removing underwater lagging, wooden caissons, and structural timbers during berth expansions and dredging works.
• Marine Salvage & Wreck Clearance: Underwater cold-cutting of submerged timber vessels, decks, and wooden structural sections.
• Dry Dock & Ship Husbandry: Servicing submerged wooden bumpers, sacrificial blocks, and keel supports around dry dock installations.
• Offshore Structure Remediation: Cutting submerged timber framing and composite structures in splash-zone and shallow-water platform sectors.

Technical Specifications

A 15″ cutting capacity pneumatic chain saw is also available for compact subsea applications upon request.

Authorized Marine & Subsea Equipment Supply in UAE

PENEQ is the official representative and authorized distributor of industrial subsea pneumatic cutting solutions in Dubai, Abu Dhabi, and across the United Arab Emirates.

For technical consulting, commercial diving fleet supply, subsea air configuration, and certified replacement parts, connect with our engineering specialists via peneq.ae.