Ship Husbandry
In-water hull grooming, propeller polishing, and sea chest descaling.
In-water hull grooming, propeller polishing, and sea chest descaling.
Complete Subsea Ship Husbandry & Hull Maintenance
In-water hull biofouling removal, propeller polishing, sea chest clearing, and sacrificial anode installation.
Marine biofouling on ocean vessels increases hydrodynamic drag, drastically increases fuel consumption, and risks introducing invasive species into sensitive waterways.
Chow Marine provides rapid, round-the-clock in-water ship husbandry services designed to maximize vessel fuel efficiency and keep fleets in full compliance with IMO Biofouling Guidelines and Great Lakes ballast water regulations.
Our multi-brush hydraulic crawler units and diver-operated cavitation lances rapidly strip barnacles, tube worms, and heavy slime from ocean hulls without damaging delicate anti-fouling paint matrices. Propeller super-polishing down to Rubert Grade A finish restores smooth hydrodynamic flow and eliminates cavitation blade vibration.
We also clean sea chest grates, clear overboard discharge spools, and replace spent zinc and aluminum hull anodes to preserve cathodic protection between scheduled drydockings.
Berthside Pre-Clean Inspection
Pre-cleaning subsea photographic assessment to document fouling rating and paint matrix condition.
Hydraulic Multi-Brush Stripping
Systematic cleaning of vertical sides, flat bottom, and bulbous bow using automated multi-brush cleaning units.
Propeller Super-Polishing
Diamond-pad multi-stage propeller blade polishing to Rubert Scale Grade A smooth surface finish.
Fuel Efficiency Certification
Post-cleaning photographic report and fuel savings calculation delivered to shipmaster before departure.
| Cleaning Rate | Up to 1,200 m²/hr Multi-Brush |
| Propeller Finish | Rubert Scale Grade A / Ra 0.5 µm |
| Paint Preservation | Zero Silicone/SPC Coating Damage |
| Environmental Standard | IMO Biofouling Guidance Compliant |
| Turnaround | Typical Panamax Hull < 14 Hours |
Full In-Water Husbandry Overhaul for 650-ft Container Vessel
In-water cleaning of 4,800 m² of fouled hull plating and multi-stage polishing of 4-blade controllable pitch propeller while discharging cargo.
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Does your hull cleaning process damage modern anti-fouling coatings?
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Does your hull cleaning process damage modern anti-fouling coatings?
No. We select specialized brush filaments (soft polypropylene, nylon, or gentle stainless wire) calibrated specifically to the paint type and fouling severity, removing biological growth without stripping the anti-fouling paint matrix.
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Can ship husbandry proceed while cargo is being loaded or unloaded?
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Can ship husbandry proceed while cargo is being loaded or unloaded?
Yes. Our operations are fully water-based from our dive workboats, allowing terminal stevedores and shore cranes to operate overhead with zero interference.
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How does propeller polishing improve fuel economy?
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How does propeller polishing improve fuel economy?
Even microscopic blade roughness creates turbulence and boundary layer friction. Polishing blades to a mirror-like Rubert Grade A finish reduces engine load and typically yields 3% to 6% in direct fuel savings.
Ready To Mobilize Crew & Tooling?
Connect directly with our Hamilton operations superintendent for emergency rapid mobilization, site evaluation, and firm engineering proposals.