Underwater Hull Inspection & UWILD Supervision Services

Assessing the underwater structural integrity, hull coating condition, and propulsion systems of a vessel without the heavy expense of dry-docking requires specialized diving supervision and Class-approved inspection protocols. MP Inspection provides independent 3rd-party underwater hull inspection supervision, UWILD oversight, and diving casualty assessments for shipowners, charterers, P&I Clubs, and classification societies worldwide.

Key Services & Operational Scope

1. UWILD (In-Water Survey in Lieu of Dry-Docking) Supervision

On-site technical supervision during official UWILD surveys in coordination with Classification Society surveyors.
Real-time surface monitoring via high-definition CCTV video feeds with two-way diver communication.
Verification of sea chest grates, discharge valves, bow thrusters, shell plating, and bilge keels.

2. Hull Coating, Cathodic Protection & Biofouling Audits

Detailed assessment of anti-fouling paint performance, blistering, detachment, and mechanical damage.
Quantitative measurement and condition appraisal of sacrificial zinc/aluminum anodes and Impressed Current Cathodic Protection (ICCP) systems.
Evaluation of biofouling levels (macro/micro fouling) to optimize vessel fuel efficiency and plan underwater hull cleaning operations.

3. Propeller, Rudder & Stern Gear Condition Inspections

High-resolution visual inspection of propeller blades for cavitation, cracks, bending, or entanglements (ropes/nets).
Clearance measurement and alignment verification for rudder pintles, stock, and stern tube seal assemblies.
Technical oversight during underwater propeller polishing or temporary sea-repair interventions.

4. Underwater Damage & Casualty Investigations

Emergency underwater inspection following grounding, collision, or contact with submerged objects.
Root-cause investigation and damage extent mapping for P&I Clubs, marine underwriters, and hull & machinery (H&M) insurers.
Clear photographic and video documentation supporting class extensions, temporary repair approvals, and insurance claims.

International Standards & Compliance

Our underwater inspection and supervision protocols strictly follow international maritime class rules and safety guidelines:

IACS Class Rules (DNV, ABS, Lloyd’s Register, Bureau Veritas, ClassNK UWILD Guidelines)
IMO Biofouling Guidelines (Resolution MEPC.207(62))
ADC International (Association of Diving Contractors) & IMCA Diving Safety Standards

Why Choose MP Inspection?

Feature	Client Benefit
Massive Dry-Dock Savings	Class-compliant UWILD supervision allowing vessels to extend dry-dock intervals safely.
Real-Time Surface Oversight	Live HD video feed verification ensuring no underwater defect is overlooked.
Unbiased P&I & Class Evidence	Independent, high-resolution documentation accepted by all major IACS classification societies and underwriters.

Request an Underwater Inspection or UWILD Supervision

Ensure underwater integrity and avoid unnecessary dry-docking costs. Contact our marine technical team today.