SAMS vs NAMS: Which Accreditation Should a US Yacht Surveyor Choose?

Side-by-side comparison of SAMS and NAMS for US marine surveyors — requirements, costs, insurance acceptance, and which fits a small yacht surveying business.

Short answer: SAMS (Society of Accredited Marine Surveyors) is the most widely recognized credential among US recreational yacht insurers and is usually the right starting point for a small yacht surveyor focused on pre-purchase and insurance work. NAMS (National Association of Marine Surveyors) carries equivalent technical weight and is preferred by some commercial and admiralty clients. Most established US surveyors hold one; a minority hold both.

This guide compares them on the factors that actually matter when you're building a small yacht surveying business in the United States.

What SAMS and NAMS Actually Are

Both are private US professional bodies — there is no federal license to be a marine surveyor in the United States. The USCG does not issue surveyor credentials. Insurance underwriters decide which surveyors they accept, and in practice that means SAMS or NAMS.

  • SAMS — founded 1986, headquartered in Jacksonville, FL. The "SAMS-AMS"

(Accredited Marine Surveyor) designation is the senior level; "SA" (Surveyor Associate) is the entry tier.

  • NAMS — founded 1962, headquartered in Knoxville, TN. The senior credential is

"NAMS-CMS" (Certified Marine Surveyor).

Both require documented field experience, references, a written exam, continuing education, and adherence to a code of ethics.

Side-by-Side: SAMS-AMS vs NAMS-CMS

| Factor | SAMS-AMS | NAMS-CMS | |---|---|---| | Years of field experience required | 5 | 5 | | Surveys to document | 75 | 50+ | | Entry tier available | Yes (SA) | Yes (Apprentice) | | Approximate first-year cost | $1,200–$1,800 | $1,400–$2,000 | | Annual dues (approx.) | $400–$500 | $450–$550 | | CE hours required per year | 20 | 30 | | Strongest in | Yacht & small craft | Commercial, cargo, H&M | | Insurer recognition (recreational) | Very high | High |

Numbers are indicative as of 2026 — check each society's current schedule before budgeting.

Which Credential Do US Boat Insurers Accept?

For recreational pre-purchase and insurance surveys on yachts under 65 feet, the underwriters most small surveyors deal with — BoatUS / GEICO Marine, Progressive, Markel, Chubb, Travelers, AIG Private Client — accept either SAMS-AMS or NAMS-CMS. A handful of policies list "SAMS or NAMS accredited" by name in their survey requirement clause.

What insurers will not accept:

  • "Member" or "Associate" tiers without the senior credential, in some cases
  • Surveys signed by an unaffiliated surveyor with no documented accreditation
  • ABYC certification alone — ABYC is a technical standard, not a surveyor credential

If a single underwriter relationship matters to your business (e.g. you do volume work for a local broker), ask them directly which credentials they accept before you commit.

Which One Is Better for a Small Yacht Surveying Business?

Pick SAMS if most of your target work is:

  • Pre-purchase surveys on sail and power yachts under 80 feet
  • Insurance condition & valuation surveys for recreational owners
  • Damage surveys for recreational hull policies
  • Work generated through yacht brokers and marina referrals

Pick NAMS if you expect significant work in:

  • Commercial small craft (charter fleets, six-pack operators, work boats)
  • Cargo, on/off-hire, and condition & valuation for commercial hulls
  • Admiralty / legal expert witness work
  • Yards and shipyards rather than brokerages

For a one-person yacht surveying business starting out in Florida, the Northeast, the Great Lakes, or the Pacific Northwest, SAMS is the more common choice simply because the customer base is recreational.

How Long Does It Take to Get Accredited?

Realistically, 5–7 years from "first day apprenticing" to senior credential. The shortcut is finding a SAMS-AMS or NAMS-CMS mentor early — both societies require documented apprenticeship under an accredited surveyor, and that's usually the bottleneck, not the exam.

If you're earlier in the journey, both societies offer associate / apprentice tiers you can use to legally market yourself as "SAMS-SA" or "NAMS Apprentice" while you build hours.

Can You Hold Both?

Yes, and roughly 10–15% of senior US surveyors do. The case for holding both:

  • Broader insurer panel acceptance
  • Marketing differentiation in a crowded local market
  • Access to both societies' CE programs and member directories

The case against:

  • ~$900–$1,000/year in combined dues
  • Double CE requirements (50 hours/year combined)
  • Diminishing returns once you have a steady client base

For most small yacht surveyors, one credential well-maintained beats two half-maintained.

What You Need Before You Apply

Regardless of which society you choose, prepare:

1. 5 years of documented field experience — dates, vessel details, scope of work, your role 2. Sample survey reports — typically 5–10 redacted full reports, the work you'd put your name on 3. References — from accredited surveyors, marina managers, brokers, or underwriters who have seen your work 4. Errors & Omissions insurance — you'll need this anyway to operate; both societies require proof 5. A business entity — LLC or sole proprietorship registered in your state

If your sample reports are inconsistent — different formats, missing equipment logs, vague findings — the application reviewers will notice. Build a report-writing workflow early. Tools like evalo standardize the findings, photos, moisture readings and recommendations into a consistent format across every survey, which is the same standard reviewers want to see.

FAQ

Is SAMS or NAMS required by law in the United States? No. Marine surveying is not federally licensed in the US. Accreditation is required by insurance underwriters and lenders, not by the government.

Can I do marine surveys without SAMS or NAMS? You can produce a survey report without accreditation, but most insurers and lenders will not accept it for binding coverage on yachts over a certain value (typically $50,000+). Without accreditation you'll be limited to private buyer inspections.

How much does SAMS or NAMS accreditation cost in 2026? Plan for $1,200–$2,000 in your first year (application, exam, dues, required CE). Annual renewal runs $400–$550 plus CE costs.

Does ABYC certification replace SAMS or NAMS? No. ABYC certifies technical knowledge of boat systems (electrical, standards compliance). SAMS and NAMS certify you as a marine surveyor. Many US surveyors hold ABYC certifications in addition to SAMS or NAMS — it's a useful complement, not a substitute.

Which is better for pre-purchase yacht surveys in Florida? SAMS. Florida has the largest concentration of SAMS-AMS members in the US and the strongest insurer recognition for recreational pre-purchase work.

Bottom Line

For a new US yacht surveyor focused on small recreational craft, SAMS-AMS is the default. NAMS-CMS is the right call if your market is commercial or admiralty. The technical bar is similar; the difference is who your future customers are.