Underwater Inspection & Hull Cleaning Services
Professional underwater inspection, underwater CCTV, commercial diving and hull cleaning services in Manila, Batangas and Subic, supporting shipowners, ship managers, technical superintendents and applicable classification inspection requirements.
Underwater Inspection for Ships & Marine Structures
PAMS Pacific Admiralty Maritime Services can coordinate specialist underwater inspection services for vessels requiring visual examination of the hull, propeller, rudder, sea chests, gratings, underwater appendages and other accessible areas below the waterline.
Underwater inspection can provide valuable technical evidence when access to the vessel's underwater condition is required without immediately placing the vessel in dry dock. The inspection scope is adapted to the vessel, underwater condition, port requirements, client instructions and the applicable inspection purpose.
Underwater Inspection Services
Underwater Hull Inspection
Visual examination of accessible underwater hull areas to identify damage, deformation, corrosion, marine growth, coating condition and other observable abnormalities.
Propeller & Rudder Inspection
Underwater visual inspection of propellers, rudders and associated accessible underwater components for visible damage, fouling, deformation or other condition concerns.
Sea Chest & Grating Inspection
Inspection of accessible sea chests, gratings and underwater openings for marine growth, fouling, blockage, damage and general visible condition.
Underwater Appendage Inspection
Examination of accessible thrusters, bilge keels, rudder arrangements, stern areas and other underwater appendages within the agreed inspection scope.
Underwater Damage Assessment
Visual assessment and documented video evidence of accessible underwater damage following contact, grounding, collision, operational incidents or other reported events.
Pre-Docking Condition Inspection
Underwater condition assessment before scheduled docking to document hull, propeller, rudder and other accessible underwater areas.
Underwater CCTV & High-Definition Video Inspection
High-definition underwater cameras can be mounted on commercial diver helmets or deployed through suitable remotely operated inspection equipment. The camera system provides live underwater video to the surface and can record inspection evidence for later technical review.
4K / Full HD Underwater Cameras
High-definition underwater cameras provide clear visual imagery of accessible hull surfaces, underwater equipment, appendages and areas included within the inspection scope.
Live Surface Monitoring
Underwater video can be transmitted to the surface so that the inspection operation can be monitored in real time by the technical team and, where applicable, the attending Owner, Manager or Classification Society representative.
Time-Coded Video Evidence
Recorded underwater video can provide a time-coded visual record of inspection observations, helping establish a traceable record of the areas examined during the attendance.
Still Image Documentation
Selected still images can be captured from the underwater inspection to document specific findings, equipment condition, damage or areas requiring attention.
Surface-Supplied Commercial Diving Systems
Underwater inspection operations can utilize surface-supplied diving systems in which the commercial diver remains connected to the surface through an umbilical system.
Breathing Air Supply
The diving umbilical provides the diver with a continuous supply of breathing air from the surface system in accordance with the diving operation's established procedures.
Diver Communications
Integrated communications can maintain voice communication between the commercial diver and the surface team during the underwater inspection.
Camera & System Connections
Suitable umbilical arrangements can support camera, communications and other required inspection equipment connections between the diver and surface monitoring system.
Surface Control
The surface team monitors the diving operation and receives the underwater visual information required for the agreed inspection scope.
Underwater Lighting & Visual Clarity
Visibility below a vessel can be significantly affected by depth, water turbidity, suspended particles, marine growth and available natural light. High-output subsea LED lighting can therefore be used to improve illumination of the inspection area.
High-Output Subsea LED Lighting
Powerful underwater LED lighting systems, including equipment exceeding 5,000 lumens where required, can illuminate dark or turbid underwater areas.
Improved Camera Imaging
Appropriate lighting assists underwater cameras in capturing clearer images and video where ambient underwater light is insufficient.
Underwater Inspection Scope
The exact scope is agreed according to the vessel, inspection objective, accessibility, underwater condition and client requirements. Typical inspection areas may include the following.
| Inspection Area | Typical Inspection Focus |
|---|---|
| Hull Shell Plating | Visible damage, deformation, coating condition, corrosion, marine growth and other observable underwater abnormalities. |
| Propeller | Visible blade condition, fouling, impact damage, deformation and other accessible areas within the agreed inspection scope. |
| Rudder | Visible condition of the rudder and accessible associated underwater areas, including signs of damage, fouling or deformation. |
| Sea Chests & Gratings | Marine growth, fouling, blockage, visible damage and general condition of accessible underwater openings and gratings. |
| Thrusters & Appendages | Visual condition of accessible thrusters, bilge keels and other underwater appendages included in the agreed scope. |
| Stern & Steering Areas | Visual inspection of accessible stern structure, rudder areas, propeller surroundings and associated underwater components. |
Underwater Cleaning Services
Specialist underwater cleaning can be arranged for vessels requiring removal of marine growth, fouling or accumulated underwater deposits from accessible hull and equipment areas.
Hull Cleaning
Underwater removal of marine growth and fouling from accessible hull surfaces using suitable cleaning methods for the vessel and local operating conditions.
Propeller Cleaning
Cleaning of accessible propeller surfaces to remove marine growth and fouling that may affect the condition and operational efficiency of the propeller.
Sea Chest Cleaning
Cleaning of accessible sea chests and gratings where marine growth or fouling may restrict water flow or affect the underwater condition of the equipment.
Inspection Before & After Cleaning
Where required, underwater visual inspection and CCTV documentation can be performed before and after cleaning to provide a documented record of the underwater condition.
Owner, Manager & Classification Inspection Support
Underwater inspection may be required by shipowners, technical managers, vessel superintendents, insurers or classification representatives for specific vessel condition assessments.
Shipowners
Independent underwater visual evidence of hull, propeller, rudder and other accessible underwater equipment condition.
Ship Managers
Technical inspection support for vessel condition monitoring, planned maintenance decisions, damage assessment and operational requirements.
Technical Superintendents
Underwater video and photographic evidence supporting technical evaluation and decisions concerning repairs, cleaning, docking or further inspection.
Classification Inspection Support
Underwater inspection arrangements can support applicable requirements of classification societies such as DNV, ABS and Lloyd's Register, subject to the specific Class requirements and acceptance of the inspection arrangement.
Underwater Inspection Technical Documentation
Inspection findings are documented according to the agreed scope and available evidence. Video, still imagery and written observations can be combined to provide a structured technical record.
| Documentation | Typical Content |
|---|---|
| Underwater Inspection Report | Description of the inspection scope, vessel information, inspection conditions, observations and identified underwater findings. |
| Underwater CCTV Video | Recorded underwater video showing the inspected areas and relevant observations, where recording is included within the agreed scope. |
| Still Images | Selected photographic evidence documenting specific underwater areas, defects, damage, fouling or other relevant observations. |
| Inspection Findings | Identification and description of visible abnormalities requiring attention, further investigation or technical assessment. |
| Cleaning Record | Where underwater cleaning is performed, documentation may include the areas cleaned and available before-and-after visual evidence. |
Underwater Inspection Process
Scope Definition
The vessel, port, inspection purpose, underwater areas, required equipment and reporting requirements are reviewed before attendance.
Diving Preparation
The underwater inspection team prepares the surface-supplied diving system, communications, cameras, lighting and other equipment required for the agreed scope.
Underwater Examination
The commercial diver examines the agreed underwater areas while the surface team monitors the operation and receives available video information.
CCTV Documentation
Underwater video and still imagery are recorded where included in the agreed inspection scope, providing visual evidence of relevant findings.
Technical Review
Recorded observations are reviewed against the agreed inspection objective and available vessel information.
Reporting
Findings are presented in a structured technical report supported by available video and photographic documentation.
Technical Inspection Applications
Routine Condition Assessment
Periodic underwater examination of vessel hulls and underwater equipment to document observable condition.
Damage Investigation
Underwater visual evidence following suspected grounding, contact, collision, impact or other underwater damage.
Pre-Docking Assessment
Documentation of underwater condition before a planned dry docking or repair period.
Post-Repair Inspection
Visual examination of accessible underwater areas following repair or maintenance work, subject to the agreed scope.
Propeller & Rudder Assessment
Underwater visual documentation of propeller and rudder condition where access and inspection conditions permit.
Marine Growth Assessment
Documentation of underwater fouling and marine growth affecting accessible hull and underwater equipment surfaces.
Service Locations
Underwater inspection and cleaning services are available for vessel operations in the principal Philippine ports listed below.
Technical Equipment & Inspection Capability
Surface-Supplied Diving Systems
Commercial diving systems using umbilicals to provide breathing air, communications and required system connections between the diver and surface team.
High-Definition Cameras
4K or Full HD underwater cameras mounted on diver helmets or suitable inspection equipment for detailed underwater video and still imagery.
Subsea LED Lighting
High-output underwater LED lighting to improve visibility and camera illumination in dark or turbid underwater environments.
Live CCTV Monitoring
Surface CCTV systems for live viewing of underwater inspection operations and monitoring of available camera feeds.
Technical Reference Framework
Underwater inspection requirements vary according to vessel type, inspection purpose, classification status, port conditions, applicable regulations and the requirements of the requesting organization. The following framework may be considered when establishing the inspection scope.
Independent Technical Oversight
Independent Consultancy
PAMS Pacific Admiralty Maritime Services is an independent Philippine technical consultancy providing marine surveying, marine engineering, offshore technical consultancy and maritime regulatory compliance services.
Technical Inspection Coordination
Where engaged, PAMS can coordinate technical inspection requirements with the specialist underwater service provider and the vessel's relevant technical stakeholders.
Evidence-Based Assessment
Underwater findings are supported by direct observations, available CCTV video, still imagery and other technical evidence obtained during the agreed attendance.
Structured Reporting
Inspection findings can be organized into a structured technical record suitable for review by the owner, manager, superintendent or other authorized stakeholder.
Underwater Inspection FAQ
What is an underwater hull inspection?
An underwater hull inspection is a visual examination of accessible areas of a vessel below the waterline. Commercial divers and underwater camera systems can be used to document hull condition, propellers, rudders, sea chests and other underwater components within the agreed scope.
Can underwater inspection be used instead of dry docking?
In certain circumstances, an underwater inspection may provide useful condition evidence without dry docking. Whether it can satisfy a specific inspection, survey or Classification requirement depends on the vessel, inspection purpose and applicable requirements of the relevant organization.
What type of underwater camera is used?
High-definition underwater cameras, including 4K or Full HD systems, may be used on diver helmets or suitable underwater inspection equipment to capture live and recorded video and still imagery.
Can the inspection video be monitored from the surface?
Yes. Suitable underwater CCTV systems can transmit the camera feed to the surface so the inspection can be monitored in real time by the surface team and, where applicable, authorized technical or Classification representatives.
What does the diving umbilical provide?
A surface-supplied diving umbilical can provide breathing air, communications and required system connections between the commercial diver and the surface support team.
Can underwater inspection support Class requirements?
Underwater inspection can be arranged to support applicable requirements of classification societies such as DNV, ABS and Lloyd's Register. Acceptance depends on the specific Class requirement, vessel circumstances and the relevant Classification Society or authorized representative.
Can underwater cleaning be performed during the same attendance?
Where permitted and included within the agreed scope, underwater cleaning can be arranged together with inspection activities. Applicable port, environmental and biofouling requirements must be considered before cleaning begins.
Where are the services available?
The primary service locations are Manila, Batangas and Subic. Other Philippine ports may be considered depending on vessel requirements, diving logistics, port permissions and availability.
Underwater Inspection Technical Notice
This page describes the general scope of underwater inspection, underwater CCTV and hull cleaning services that may be arranged through specialist commercial diving resources. The actual inspection procedure, equipment, diving method, reporting format and acceptance criteria depend on vessel type, underwater conditions, port requirements, client instructions, Classification Society requirements where applicable and the agreed scope of work. Underwater inspection findings are limited to areas that can be safely accessed and visually examined under the prevailing conditions.
Related Underwater Inspection Resources
Underwater Inspections Case Study
Review an example of underwater inspection work and the technical observations documented during the attendance.
View Case StudyUnderwater Inspection Project
View an underwater inspection project and the technical scope associated with the vessel attendance.
View ProjectRead Underwater Inspection Article
About the Technical Consultancy
Technical Content Review
Last Technical Review
September 2026
Review Frequency
Content is reviewed periodically to maintain alignment with applicable marine inspection practices, vessel requirements, underwater inspection technology and relevant technical developments.
Request an Underwater Inspection
Request underwater hull inspection, CCTV inspection, propeller and rudder inspection, underwater damage assessment or hull cleaning support in Manila, Batangas or Subic. Provide the vessel name, port, inspection purpose and required attendance date so the technical scope can be reviewed.
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