Grit-Free Surface Preparation Below the Waterline
Engineered for underwater environments, diving operations, and offshore maintenance, delivering controlled surface conditioning even in demanding subsea conditions.
Below the surface
When corrosion protection needs to extend below the surface of the sea, precision, safety, and reliability become even more critical.
“Grit-free preparation, controlled even below the waterline.”
Water pressure
Managing buoyancy and pressure effects at depth.
Limited visibility
Operating in murky or restricted subsea environments.
Environmental risk
Preventing contamination in sensitive marine ecosystems.
Operational constraints
Meeting strict diving campaign and ROV requirements.
Hydraulic power, underwater integrity
The Bristle Blaster® Subsea is a hydraulic underwater device with a unique water drive. Connected via a single, neutrally buoyant high-pressure hose, it creates a controlled, inspectable surface profile below the waterline, without grit or containment. Topside, the same principle runs on the Bristle Blaster® range.
Our subsea offering
Diving-compatible tools
Specialized surface preparation tools operated safely by commercial divers.
Caviblasting systems
Advanced water-based blasting that delivers controlled cleaning underwater.
Technical support
From pre-project planning to offshore execution, our specialists support the campaign.
Where it's used
Offshore platforms & jackets
Controlled, inspectable preparation on structural steel.
Subsea pipelines & spools
Grit-free conditioning for reliable coating adhesion.
Marine vessels
Underwater hull sections and structures.
Wind foundations
Offshore wind foundation maintenance.
FPSO structures
Floating production, storage and offloading structures.
IRM campaigns
Inspection, repair, and maintenance campaigns.
Prepared below
the waterline.
Trusted on projects worldwide
The water-driven Bristle Blaster® enables hydraulic underwater surface preparation where conventional blasting cannot reach.
Surface preparation, underwater
The water-driven Bristle Blaster® prepares submerged steel where conventional blasting can't reach.
Explore what fits this work
Spark-free surface prep for subsea and splash-zone hot-work zones.
The Bristle Blaster® Pneumatic Ultimate has undergone an independent Gexcon ignition-hazard analysis and ATEX 2014/34/EU conformity evaluation, so coating repair can continue in hazardous offshore areas without electric-tool hot-work permits.
Category 2, zone 1 gas & zone 21 dust
Zone 1 explosive gas, assessed for gas group IIA (petrol, hexane, propane), EPL Gb.
Zone 21 explosive dust, assessed for dust subgroup IIIC, EPL Db.
Fully pneumatic, compressed-air drive, no electrical components, no electrical ignition source.
Independently evaluated by Gexcon to the harmonized EN ISO 80079 series.
Bristle Blaster® Pneumatic Ultimate
Brush-discharge testing recorded no measurable discharge — passed for gas groups IIA, IIB and IIC.
Eight drops in ambient and frozen condition — no damage that reduces the tool’s ignition safety.
Operated inside explosive propane-air atmospheres (group IIA) with no ignition observed.
Markings shown reflect the scope of the independent ATEX conformity evaluation. Confirm the certified marking on the tool nameplate and Declaration of Conformity for your specific configuration before specifying.
IMCA, DNV & ISO aligned
MontiPower subsea tools are configured in accordance with offshore safety standards and industry diving protocols. IMCA-compliant, built to DNV offshore requirements, and compliant with relevant ISO standards.