Turnstone Marine Surveys
Marine Electrical, Corrosion, Prepurchase, and Casualty

Turnstone Marine Survey LLC offers complete marine surveying of sail and power vessels, including damage claims, appraisal, and consultation. Also available for marine electrical design, diagnostics, corrosion, and consultation. This company is dedicated to the highest standards in the boating industry as addressed by SAMS, ABYC, NFPA, CFR, COLREGS, etc. Recognized and complimented for thorough inspections and timely reports, rivers, lakes, and harbors of Southeastern New England to Mid-coast Maine east of the Connecticut River is home territory, but travel can be arranged almost anywhere! A variety of report formats is available. Unsolicited references available on The Hull Truth.com 

Turnstone Marine Survey
Marine Electrical, Corrosion, and Casualty

My Credentials

I spent my summers as far back as I can recall enjoying the lakes and oceans on and around Cape Cod by boat. Wooden boats early on, and now fiberglass. I worked summers in High School at a local marina as an outboard mechanic. I hold a Bachelors Degree in Healthcare Management, but my passion has been boating. Several restorations of wooden and fiberglass boats have resulted in an intensive hands-on experience in boat construction, electrical, water, waste, and mechanical systems for power and sail.

I have drawn on this lifetime of boating and earned a Certificate in Yacht and Small Craft Surveying from the Chapman School of Seamanship. This respected program is one of a kind and its graduates are generally given 1 years credit towards the usual 5 years apprentice time in the Society of Accredited Marine Surveyors. The marine insurance and lenders industry and SAMS® are working together to standardize the marine survey. This being the case, all member surveyors that meet the rigid criteria of
SAMS® are also universally and uniquely accepted by the marine insurance and lending institutions as qualified professionals. Since graduating from Chapman’s I have completed hundreds of surveys and passed the rigid SAMS® exam to become an Accredited Marine Surveyor- AMS® designation, of which I am incredibly proud.

Additionally, I have studied and 3 times passed the very difficult “Marine Standards” exam given by the American Boating and Yacht Council, Inc. I have also completed and passed the exams for “Marine Electrical Systems” and “Marine Corrosion”. The only certifications of kind available. ABYC has awarded me the title “”Master Marine Technician”. ABYC is a not-for-profit membership supported organization that has been
developing, writing and updating the safety standards for boat building and repair in the United States for nearly 50 years. ABYC is actively involved with the International Organization for Standardization (ISO) and is a leader in education for the marine industry, as well as certification programs for marine technicians. A working knowledge of the laws enforced by the United States government, (US Coast Guard), which are
the Code of Federal Regulations / Titles 33 and 46, Marine Pollution Act / MARPOL, and the international COLREGS, is necessary to pass the ABYC accreditation.

I am ABYC Standards Certified for:
Project (H): HULL

I am both ABYC Marine Electrical and Corrosion Certified for:
Project (E-10 and 11) specializing in onboard AC and DC electrical systems with corrosion issues.

I am NMEA 0400 Certified for ship’s navigational electronics installations.
(The National Marine Electronics Association (NMEA) works closely with the National Marine Manufactures Association (NMMA) to develop and adopt standards for the correct installation and maintenance of today’s sophisticated navigational equipment).

Additionally I have been educated by the US Congressionally authorized Appraisal Foundation to appraise yachts as outlined by the Uniform Standards of Professional Appraisal Practice or USPAP. (The same organization that oversees appraisal practice for real estate and all property valuating). Ask any appraiser… this is an intense course
with a very difficult final exam.

I am also qualified for insurance damage surveying. Experience and training again from Chapman School of Seamanship- Damage and Claims program. I have been a member of the International Association of Marine Investigators IAMI and have successfully competed a 20 hour
seminar, field work, and exam by the International Association of Arson Investigation Massachusetts Chapter- MIAAI “Marine Vessel Fire Investigation 101”.

I maintain active memberships in:

SAMS® Society of Accredited Marine Surveyors
Past SAMS® Northeast Regional Director
Cape Cod Marine Trades Association (Now disbanded)
American Boating and Yacht Council (ABYC®)
Boat US®
Boatpokers® Marine Surveyors Information Exchange
International Association of Marine Investigators (IAMI®)
National Fire Protection Agency (NFPA®)
BUC® Research


Peter Spang, AMS®
(SAMS® Accredited Marine Surveyor)

ABYC Master Marine Technician
ABYC Certified Marine Electrical
ABYC Certified Marine Corrosion
ABYC Certified Small Craft Standards
MAIAAI Mass. International Association of Arson Investigators
NMEA 0400 Electronics Installations Certified
NFPA Standards Compliant
USPAP Standards Appraisals