Martin & Ottaway
- Tinton Falls, New Jersey
- 150 Years Experience
- International
- Mid
- Expert Witness
- ASA · Verify
Martin & Ottaway provides maritime engineering appraisals and surveying services worldwide.
About
Martin & Ottaway is a maritime engineering and appraisal firm based in Tinton Falls, New Jersey, with over 150 years of continuous operation. David Tantrum holds the ASA designation from the American Society of Appraisers. The firm provides appraisals, surveys, damage assessments, and expert witness services to maritime clients worldwide.
Services & Specializations
Martin & Ottaway provides appraisals, cargo and damage surveys, structural and stability calculations, construction and repair supervision, and expert testimony. Services include groundings, collisions, sinkings, fire and salvage assessments, quality and safety consulting, and risk management for vessels including yachts, ferries, and cruise ships.
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Full Bio
Martin & Ottaway, Van Hemmen & Dolan, Inc. is a maritime engineering and appraisal firm headquartered in Tinton Falls, New Jersey. With over 150 years of continuous operation, the firm has developed an extensive experience database addressing complex maritime problems. David Tantrum, ASA, represents the firm’s appraisal expertise. The firm provides appraisals, surveys, damage assessments, structural and stability calculations, construction supervision, and expert witness services. Annual engagements exceed 100 clients across more than 30 countries, with surveyed and supervised damages and repairs totaling over $100 million yearly. Martin & Ottaway maintains computerized appraisal databases and extensive engineering libraries dating to the early 1800s.
Notable Engagements
Serves ship owners, underwriters, attorneys, investors, financial institutions, and governmental agencies worldwide. Annually provides services across over 30 countries with damages and repairs surveyed exceeding $100 million per year.
Credentials & Verification
Credentials held by David Tantrum, each independently verifiable:
- VerifyASAIssued by American Society of Appraisers