Underwater Services

Efficient and compliant underwater services with advanced inspection and cleaning expertise

Seachios® delivers underwater inspection, hull and rudder cleaning, propeller polishing, seachest cleaning, and welding. Certified divers use manual and mechanical tools with GoPro HERO13 and iPhone 15/16 imaging to provide surveyor-approved documentation, ensuring efficiency, safety, and compliance with IMO, IACS, AWS D3.6M, and Port State Control standards across Brazil’s major ports.

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Underwater Services — Technical Specification

Integrated Service Framework

Seachios® performs inspection, cleaning, polishing, and welding below the waterline to maintain vessel efficiency, ensure compliance, and reduce operational downtime. Certified divers employ manual and mechanical tools, supported by high-definition cameras, to deliver results that are both technically precise and survey-ready.

Core Service Lines

Underwater Inspection

Carried out with GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max in subsea housings.
Provides real-time visual assessment of hull, rudder, propeller, seachests, and appendages.
Reporting includes still images, HD video, and defect logs aligned with class society requirements.

Hull Cleaning

Removal of biofouling, algae, and barnacles using scrapers, rotary brushes, and hydraulic tools.
Restores smooth hull surfaces, improving hydrodynamics and delivering fuel efficiency gains of 3–8%.
Cleaning methods adapted to coating type (SPC, biocidal, or fouling release systems).

Rudder Cleaning

Targeted brushing and scraping of rudder blades, pintles, and weld seams.
Prevents restriction of rudder movement and ensures inspection approval without remarks.

Propeller Polishing

Multi-stage polishing process from coarse brushing to superfine finish (RA < 0.3 µm).
Reduces cavitation, vibration, and noise while increasing propulsion efficiency.
Photo/video evidence provided for before/after comparison.

Seachest Cleaning

Mechanical and manual cleaning of grates, strainers, and internal chambers.
Removes marine growth and debris to restore full cooling water flow.
Documented with video evidence for surveyor verification.

Underwater Welding

Performed by class-certified divers using wet welding electrodes and power sources.
Applied for temporary repairs, bracket reattachment, crack arrest, and emergency patching.
Executed in compliance with AWS D3.6M and accepted by major classification societies.

Tools and Technology

Manual tools: scrapers, chisels, wire brushes.
Mechanical tools: rotary brushes, hydraulic polishers, grinders.
Imaging: GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max for high-fidelity visual records.
Welding: wet welding kits and class-approved electrodes.
Reporting: digital photo/video logs with time-stamps and structured defect notes.

Operational Standards

Full compliance with IMO, IACS, AWS D3.6M, and Port State Control regulations.
Divers certified under IMCA, ADCI, and Brazilian Navy standards.
HSE controls include standby diver, topside communications, gas supply redundancy, and emergency evacuation protocols.

Efficiency and Compliance Impact

Fuel savings: hull and propeller maintenance improves hydrodynamic performance, cutting fuel consumption by up to 8%.
Safety assurance: seachest cleaning and inspections mitigate risks of engine overheating or intake obstruction.
Regulatory acceptance: survey-ready documentation minimizes downtime and supports in-water survey equivalence.

All services are executed under contractual terms agreed between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

Underwater Services — Technical Specification

Integrated Service Framework

Core Service Lines

Underwater Inspection

Carried out with GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max in subsea housings.
Provides real-time visual assessment of hull, rudder, propeller, seachests, and appendages.
Reporting includes still images, HD video, and defect logs aligned with class society requirements.

Hull Cleaning

Removal of biofouling, algae, and barnacles using scrapers, rotary brushes, and hydraulic tools.
Restores smooth hull surfaces, improving hydrodynamics and delivering fuel efficiency gains of 3–8%.
Cleaning methods adapted to coating type (SPC, biocidal, or fouling release systems).

Rudder Cleaning

Targeted brushing and scraping of rudder blades, pintles, and weld seams.
Prevents restriction of rudder movement and ensures inspection approval without remarks.

Propeller Polishing

Multi-stage polishing process from coarse brushing to superfine finish (RA < 0.3 µm).
Reduces cavitation, vibration, and noise while increasing propulsion efficiency.
Photo/video evidence provided for before/after comparison.

Seachest Cleaning

Mechanical and manual cleaning of grates, strainers, and internal chambers.
Removes marine growth and debris to restore full cooling water flow.
Documented with video evidence for surveyor verification.

Underwater Welding

Performed by class-certified divers using wet welding electrodes and power sources.
Applied for temporary repairs, bracket reattachment, crack arrest, and emergency patching.
Executed in compliance with AWS D3.6M and accepted by major classification societies.

Tools and Technology

Manual tools: scrapers, chisels, wire brushes.
Mechanical tools: rotary brushes, hydraulic polishers, grinders.
Imaging: GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max for high-fidelity visual records.
Welding: wet welding kits and class-approved electrodes.
Reporting: digital photo/video logs with time-stamps and structured defect notes.

Operational Standards

Full compliance with IMO, IACS, AWS D3.6M, and Port State Control regulations.
Divers certified under IMCA, ADCI, and Brazilian Navy standards.
HSE controls include standby diver, topside communications, gas supply redundancy, and emergency evacuation protocols.

Efficiency and Compliance Impact

Fuel savings: hull and propeller maintenance improves hydrodynamic performance, cutting fuel consumption by up to 8%.
Safety assurance: seachest cleaning and inspections mitigate risks of engine overheating or intake obstruction.
Regulatory acceptance: survey-ready documentation minimizes downtime and supports in-water survey equivalence.

All services are executed under contractual terms agreed between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

Underwater Services — Technical Specification

Integrated Service Framework

Core Service Lines

Underwater Inspection

Carried out with GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max in subsea housings.
Provides real-time visual assessment of hull, rudder, propeller, seachests, and appendages.
Reporting includes still images, HD video, and defect logs aligned with class society requirements.

Hull Cleaning

Removal of biofouling, algae, and barnacles using scrapers, rotary brushes, and hydraulic tools.
Restores smooth hull surfaces, improving hydrodynamics and delivering fuel efficiency gains of 3–8%.
Cleaning methods adapted to coating type (SPC, biocidal, or fouling release systems).

Rudder Cleaning

Targeted brushing and scraping of rudder blades, pintles, and weld seams.
Prevents restriction of rudder movement and ensures inspection approval without remarks.

Propeller Polishing

Multi-stage polishing process from coarse brushing to superfine finish (RA < 0.3 µm).
Reduces cavitation, vibration, and noise while increasing propulsion efficiency.
Photo/video evidence provided for before/after comparison.

Seachest Cleaning

Mechanical and manual cleaning of grates, strainers, and internal chambers.
Removes marine growth and debris to restore full cooling water flow.
Documented with video evidence for surveyor verification.

Underwater Welding

Performed by class-certified divers using wet welding electrodes and power sources.
Applied for temporary repairs, bracket reattachment, crack arrest, and emergency patching.
Executed in compliance with AWS D3.6M and accepted by major classification societies.

Tools and Technology

Manual tools: scrapers, chisels, wire brushes.
Mechanical tools: rotary brushes, hydraulic polishers, grinders.
Imaging: GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max for high-fidelity visual records.
Welding: wet welding kits and class-approved electrodes.
Reporting: digital photo/video logs with time-stamps and structured defect notes.

Operational Standards

Full compliance with IMO, IACS, AWS D3.6M, and Port State Control regulations.
Divers certified under IMCA, ADCI, and Brazilian Navy standards.
HSE controls include standby diver, topside communications, gas supply redundancy, and emergency evacuation protocols.

Efficiency and Compliance Impact

Fuel savings: hull and propeller maintenance improves hydrodynamic performance, cutting fuel consumption by up to 8%.
Safety assurance: seachest cleaning and inspections mitigate risks of engine overheating or intake obstruction.
Regulatory acceptance: survey-ready documentation minimizes downtime and supports in-water survey equivalence.

All services are executed under contractual terms agreed between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

Frequenly asked questions

What underwater services does Seachios® provide?

We deliver inspection, hull cleaning, rudder cleaning, propeller polishing, seachest cleaning, and underwater welding, performed by certified divers.

What equipment is used for inspections?

Our divers use GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max cameras in subsea housings, ensuring high-definition images and videos accepted by surveyors.

How does underwater hull and propeller cleaning improve efficiency?

By removing marine growth and polishing propellers to RA < 0.3 µm, drag is reduced, improving hydrodynamics and cutting fuel consumption by up to 8%.

What standards govern underwater welding?

All welding operations follow AWS D3.6M Underwater Welding Code and are carried out in line with class society and Port State requirements for acceptance.

How is safety ensured during underwater operations?

Divers are certified under IMCA, ADCI, and Brazilian Navy standards, with strict HSE controls including standby diver, topside communications, and emergency protocols.

What is included in the final documentation?

Clients receive digital photo and video reports, defect logs, before/after records, and class-ready survey documentation.

Can underwater inspections replace drydock surveys?

Yes. Certain inspections may be accepted as in-water survey equivalents by classification societies, reducing downtime and costs when approved by the surveyor.

What ports are covered by Seachios® underwater services?

Services are available in Santos, Vitória, Itaqui, Paranaguá, and other major Brazilian ports.

How are commercial terms structured?

All underwater services are performed under contractual agreements between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

What underwater services does Seachios® provide?

We deliver inspection, hull cleaning, rudder cleaning, propeller polishing, seachest cleaning, and underwater welding, performed by certified divers.

What equipment is used for inspections?

Our divers use GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max cameras in subsea housings, ensuring high-definition images and videos accepted by surveyors.

How does underwater hull and propeller cleaning improve efficiency?

By removing marine growth and polishing propellers to RA < 0.3 µm, drag is reduced, improving hydrodynamics and cutting fuel consumption by up to 8%.

What standards govern underwater welding?

All welding operations follow AWS D3.6M Underwater Welding Code and are carried out in line with class society and Port State requirements for acceptance.

How is safety ensured during underwater operations?

Divers are certified under IMCA, ADCI, and Brazilian Navy standards, with strict HSE controls including standby diver, topside communications, and emergency protocols.

What is included in the final documentation?

Clients receive digital photo and video reports, defect logs, before/after records, and class-ready survey documentation.

Can underwater inspections replace drydock surveys?

Yes. Certain inspections may be accepted as in-water survey equivalents by classification societies, reducing downtime and costs when approved by the surveyor.

What ports are covered by Seachios® underwater services?

Services are available in Santos, Vitória, Itaqui, Paranaguá, and other major Brazilian ports.

How are commercial terms structured?

All underwater services are performed under contractual agreements between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

What underwater services does Seachios® provide?

We deliver inspection, hull cleaning, rudder cleaning, propeller polishing, seachest cleaning, and underwater welding, performed by certified divers.

What equipment is used for inspections?

Our divers use GoPro HERO13 Black Ultra Wide and iPhone 15/16 Pro Max cameras in subsea housings, ensuring high-definition images and videos accepted by surveyors.

How does underwater hull and propeller cleaning improve efficiency?

By removing marine growth and polishing propellers to RA < 0.3 µm, drag is reduced, improving hydrodynamics and cutting fuel consumption by up to 8%.

What standards govern underwater welding?

All welding operations follow AWS D3.6M Underwater Welding Code and are carried out in line with class society and Port State requirements for acceptance.

How is safety ensured during underwater operations?

Divers are certified under IMCA, ADCI, and Brazilian Navy standards, with strict HSE controls including standby diver, topside communications, and emergency protocols.

What is included in the final documentation?

Clients receive digital photo and video reports, defect logs, before/after records, and class-ready survey documentation.

Can underwater inspections replace drydock surveys?

Yes. Certain inspections may be accepted as in-water survey equivalents by classification societies, reducing downtime and costs when approved by the surveyor.

What ports are covered by Seachios® underwater services?

Services are available in Santos, Vitória, Itaqui, Paranaguá, and other major Brazilian ports.

How are commercial terms structured?

All underwater services are performed under contractual agreements between Seachios® and the client, ensuring transparency, compliance, and operational integrity.

Final Considerations

Seachios® delivers inspection, cleaning, polishing, and welding below the waterline with certified divers, advanced tools, and high-definition imaging. From hull and rudder maintenance to propeller polishing and seachest clearance, our underwater services are designed to improve efficiency, reduce risks, and ensure full compliance with IMO, IACS, AWS D3.6M, and Port State Control requirements.

All operations are conducted under contractual agreements with transparent reporting, including photo and video documentation accepted by surveyors, ensuring vessels remain audit-ready in Brazil’s major ports.