Large Yacht Pre-Purchase Surveys
Independent assessment of hull, structure and onboard systems, including agreed haul-out and sea-trial attendance, specialist coordination and prioritized reporting for the buyer.
Independent marine surveying & technical consultancy
Technical clarity when the stakes are high.
Independent pre-purchase surveys for large yachts, backed by practical marine engineering and refit experience. Grubb Marine Surveying & Consulting also provides technical consulting, casualty investigation and expert support for owners, advisers and insurers.
- 30
- years of marine experience
- 70m
- major-yacht refit experience
- Independent
- analysis and reporting
Operational perspectiveFrom machinery spaces to the evidentiary record.
Yacht buyers & owners
Attorneys
Insurers
Financial institutions
Marine-industry stakeholders
Field evidence
The work is technical. The record should show it.
Selected assignment photography showing the conditions, access and physical evidence encountered during yacht casualty, machinery and refit investigations.
Core expertise
Independent analysis for consequential marine matters.
Assignments are approached with disciplined inspection, precise documentation and conclusions that remain clear under scrutiny.
Refit & Shipyard Consulting
Independent review of specifications, progress, workmanship and remedial scope, including technical support where refit work is disputed.
Damage & Casualty Investigation
Methodical examination of machinery, systems and structures to identify failure mechanisms, contributing conditions and the technical sequence of events.
Expert Witness Support
Clear technical opinions, evidence review and defensible reporting prepared for counsel, insurers, mediation, arbitration and litigation.
Surveying & Valuation
Condition, insurance and damage surveys, together with market and replacement-cost valuations within an agreed scope.
The perspective behind the opinion
“A defensible technical conclusion begins with understanding how a vessel was built, operated, maintained and repaired.”
Engineering judgment grounded in the real operation of yachts.
Justin Grubb is a Certified Marine Surveyor and Qualified Marine Chief Engineer with three decades of experience spanning vessel construction, machinery operation, shipyard work and major-yacht refit management.
That breadth helps purchasers understand a yacht’s condition and owners address technical concerns, refit decisions and casualties. Findings are developed from the physical evidence and communicated in language decision-makers can use.
About Justin Grubb and the firm →Representative experience
Complex work. Discreetly presented.
Engagements are described by technical scope rather than by vessel or client name.
Technical oversight on projects to 70 metres
Specification review, progress verification and quality control across structural, mechanical, electrical and coating work.
Flooding and partial-sinking investigations
Preservation-focused inspection of alleged component failures, surrounding installation and plausible contributing causes.
Shafting, alignment and machinery analysis
Independent evaluation of observed conditions, service history, repair records and the distinction between defect, deterioration and maintenance.
Method & standards
Evidence before opinion. Engineering before rhetoric.
Inspection and analysis are informed by applicable vessel regulations, recognized marine standards, manufacturer information, service records and accepted industry practice. The relevant authority is identified; it is never substituted for sound technical judgment.
- Machinery, propulsion and onboard systems
- Structural integrity and composite construction
- Electrical, fire-safety and compliance review
- Photographic evidence and document analysis
Professional standing
MIIMS® #G1882NAMS® #509IAMI® #4542ABYC Standards Advisor
Discuss an assignment
When the technical record matters, begin with an independent view.
Based in Fort Lauderdale and available for assignments throughout the United States and internationally by arrangement.