Superyachts represent a remarkable fusion of luxury, design, and engineering, but even the most prestigious vessels can hide critical issues. At Vassallo Associates, our experienced marine surveyors routinely uncover a variety of problems that can impact safety, compliance, performance, and resale value.
Whether you’re considering a purchase, preparing for an insurance renewal, or undertaking scheduled maintenance, here are the top 10 most common issues we encounter during superyacht surveys.
1. Hull and Structural Defects
Structural integrity is fundamental to a yacht’s seaworthiness. Our surveys frequently detect issues such as delamination in composite hulls, corrosion in steel or aluminium structures, and blistering in fibreglass. At Vassallo Associates, we use advanced techniques such as ultrasonic thickness gauging and infrared imaging to assess these concerns accurately.
2. Osmosis in GRP Hulls
Osmosis, often referred to as “fibreglass cancer,” is a recurring issue in older GRP yachts. It occurs when water penetrates the gel coat, leading to blistering and internal weakening. Using moisture meters and close-up inspections, our team at Vassallo Associates identifies the extent of osmosis and advises on appropriate remediation.
3. Engine and Mechanical Wear
Mechanical systems—even in luxury yachts—are susceptible to deterioration. During surveys, we commonly find oil leaks, worn belts, corroded components, or malfunctioning cooling systems. Vassallo Associates provides detailed engine condition reports, including fluid analysis and compression testing where applicable.
4. Non-Compliant Safety Equipment
Outdated or non-functional safety equipment is a surprisingly frequent issue. Life rafts, EPIRBs, fire extinguishers, and flares are often expired or non-compliant with flag state regulations. We ensure all life-saving equipment meets regulatory standards and is ready for emergency use.
5. Electrical System Concerns
Older or poorly maintained electrical systems pose serious safety risks. We often discover exposed wiring, corroded connections, non-compliant installations, or overloaded distribution panels. Our electrical inspections help ensure your yacht is safe, efficient, and compliant with current marine electrical standards.
6. Propulsion and Steering Deficiencies
Issues with shaft alignment, propeller damage, worn bearings, or hydraulic steering leaks are regularly found during sea trials. These can affect handling and increase operational costs. The team at Vassallo Associates performs thorough propulsion checks as part of every survey.
7. Leaks in Plumbing and Tank Systems
From freshwater tanks to bilge pumps and blackwater systems, plumbing components are prone to leaks and wear. Our surveys often identify degraded hoses, blocked filters, or faulty valves—problems that, if ignored, can lead to damage or regulatory issues.
8. Corrosion of Deck Hardware and Fittings
Cleats, winches, railings, and deck fasteners are constantly exposed to saltwater and UV. Surveyors frequently find corrosion, loose mounts, or compromised seals. Vassallo Associates checks all visible and hidden fittings to prevent water ingress and structural damage.
9. Navigation and Comms Failures
Sophisticated electronics are standard on most superyachts, but outdated software, faulty sensors, or poor installations remain common. We evaluate the full navigation and communication equipment suite to ensure full functionality and compliance.
10. Interior Moisture and Hidden Damage
Luxury interiors often hide early signs of water ingress, mould, or rot. Leaks from deck fittings, windows, or air conditioning systems can go unnoticed. Our comprehensive inspections include concealed areas to detect moisture before it becomes a larger problem.
Why These Findings Matter
Superyacht surveys are essential for identifying potential risks, ensuring seaworthiness, and protecting your investment. At Vassallo Associates, we pride ourselves on delivering clear, detailed reports that support informed decision-making—whether you’re buying, selling, insuring, or maintaining your vessel.
If you’re planning a survey or would like a consultation, get in touch today. Our team of expert superyacht surveyors is ready to assist you worldwide.