Air Chain Saws for Underwater, with Brake 4 HP

Pneumatic Chain Saws for Underwater Cutting (with Chain Brake – 4 HP)

The 4 HP Underwater Pneumatic Chain Saw series is engineered specifically for commercial divers operating in demanding marine, coastal, and offshore environments. Powered by a heavy-duty pneumatic motor equipped with a dedicated exhaust valve system, these saws deliver continuous cutting power through submerged timber, wooden pilings, composite structures, and heavy maritime timbers where electrical equipment presents severe hazards and gas engines cannot function.

Featuring an integrated safety chain brake designed for subsea use, this series provides maximum diver safety, positive control in low-visibility currents, and spark-free cold-cutting capability around submerged gas pockets and sensitive marine structures.

Key Benefits

• Engineered for Subsea & Marine Operations

  Equipped with a specialized pneumatic exhaust valve system that ensures smooth, safe operation while fully submerged in saltwater, freshwater, or coastal environments.

• Non-Thermal Cold Cutting Safety

  Eliminates heat generation and ignition risks, making it safe for underwater operations near trapped flammable gases, volatile vapors, or fuel lines.

• High-Power 4 HP Pneumatic Motor

  Delivers relentless cutting force and high torque to power through dense, waterlogged timber, timber pilings, and tough composite marine members.

• Integrated Diver-Safety Chain Brake

  Provides instantaneous chain-stopping response during kickbacks or rapid repositioning, safeguarding commercial divers in restricted visibility or turbulent waters.

• Superior Maneuverability & Control

  Balanced ergonomic layout and optimized power-to-weight ratio reduce diver fatigue during horizontal, vertical, or overhead underwater cuts.

• Corrosion & Moisture Resistance

  Built with heavy-duty industrial components designed to withstand high humidity, saltwater splash, and continuous submerged duty cycles.

Applications & Usage

• Marine Construction & Pier Maintenance: Cutting and trimming submerged timber pilings, dock supports, fenders, and fender walls.
• Offshore & Seawall Repairs: Cutting wooden, timber-lagged, or composite retaining structures during harbor deepening, revetment, and seawall upgrades.
• Salvage & Decommissioning: Sectioning underwater wooden vessels, deteriorated caissons, framing, and offshore wood cribbing.
• Submerged Debris Removal: Clearing waterlogged trees, contaminated river pilings, and navigational obstructions in ports, shipping channels, and lakes.
• Hazardous Offshore Environments: Safe timber cutting on splash-zone platform structures and subsea tie-ins where hot-work permits are restricted.

Technical Specifications

Optional 11″ guide bar available on special order (Part No. 5 1005 7160).

Authorized Industrial & Marine Supply in UAE

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

For commercial diving contractor inquiries, offshore supply packages, air-line setup specifications, and genuine spare parts, reach out to our engineering sales team via peneq.ae.