About Us


Lewis Martin & Associates Ltd.

Tyler Lewis joined Marine Surveys Canada in 2010 and continued to grow the company in Western Canada. Tyler was instrumental in the launch of the eastern office in 2011 and has been a leader in the development of a national presence.

Tyler brings excellent technical skills and youthful enthusiasm to our team. He is a dedicated marine surveyor and a graduate of the Chapman School of Seamanship in Florida and carries a certificate from the Northern Alberta Institute of Technology as a marine service technician. He is actively involved in continuing education programs through ABYC and other institutions and is currently certified in ABYC Electrical.

In addition, Tyler is an Associate Member of the International Institute of Marine Surveyors.


Lewis Martin & Associates Ltd.

Tim Martin founded Marine Surveys Canada in 2004 in a bid to provide marine surveying and marine-­‐specific appraisal services that were largely non-­‐existent in Alberta at the time. The company rapidly became established as Alberta’s own marine survey and appraisal company. Tim subsequently relocated to Ontario, opening the eastern office of Marine Surveys Canada in 2011.

Tim has been actively working as a marine surveyor for 18 years, bringing technical and problem-­‐solving expertise to all levels of the Marine Surveys Canada operation. As a licensed marine technician, he provides know-­‐how and perspective on many of the common challenges with boat ownership. Tim has owned a marine dealership and managed marina service departments in eastern and western Canada. He also possesses some unique experience in labour relations, both in public and private industry, including unionized environments. Tim has been committed to ongoing education and holds ABYC Electrical and Corrosion Certifications.

Tim is an Accredited Marine Surveyor with the Society of Accredited Marine Surveyors.

David W. Donnelly

David Donnelly is the former owner/president of a manufacturing company. He is a red seal machinist with 32 years experience. His attention to detail and high quality of professional delivery has earned the respect of his industry peers and a reputation of integrity. Building and maintaining lasting professional relationships has evolved throughout David’s career and he is aspiring to continuing that rapport as a marine surveyor.

David is an avid sailor who, having been raised in the Maritimes, has always had a fondness for all things nautical. As an active member of the sailing community near Edmonton, Alberta, David has invested many hours to the labour of love that is boat maintenance. Acute attention to detail and awareness of compliance, safety, esthetics, and function are skills that David brings to marine surveying.

David’s enthusiasm and comradery with fellow boaters will be both rewarding and add to his knowledge and skills as a surveyor. David is an active member of ABYC.

David is a Surveyor Associate with the Society of Accredited Marine Surveyors.

Sophie Foster

Sophie joined Marine Surveys Canada in 2024 as a staff surveyor, bringing with her a wealth of experience and expertise in the maritime industry. Graduating with First Class Honours in Naval Architecture from Newcastle University in 2018, Sophie embarked on a career in the marine industry that has spanned across various roles and continents.

Beginning her career as a marine surveyor with the Maritime and Coastguard Agency (MCA), Sophie gained invaluable experience in marine surveying, encompassing a diverse array of ship types. This foundation provided the cornerstone for Sophie’s subsequent ventures, where she continued to hone her skills and expand her knowledge.

Venturing overseas, Sophie served as a Naval Architect in a design office in Canada, further enriching her understanding of vessel design and construction. Specializing in vessel stability, Sophie has expertise in conducting lightship surveys, inclining experiments, and developing intact and damage stability books in compliance with Transport Canada, Classification Society and ISO12217 Regulations. Sophie is also a Transport Canada approved Tonnage Measurer. 

Throughout her career, Sophie has remained dedicated to continuous learning and professional development. She has completed numerous training courses, including those in wooden and FRP boat building, welding and NDT, approved engine courses, and proficiency in radio and navigation equipment, among others.

With a commitment to excellence and a passion for maritime safety, Sophie brings a wealth of knowledge and experience to every surveying assignment. Clients can trust in Sophie’s meticulous attention to detail and unwavering dedication to upholding the highest standards of safety and compliance in the maritime industry.

Denis Serov

Denis joined Marine Surveys Canada in 2024, after relocating to Canada from the Mediterranean region where he acted as an independent marine surveyor. Denis holds a Master’s Degree in Nuclear Physics and a Diploma from the Maritime Training Academy (UK).

Denis is dedicated to delivering unparalleled service to his clients, specializing in surveying sailboats and powerboats up to 24 meters. Denis’ engineering background along with his rich hands-on experience of refitting his own boats, allows him to intuitively understand engines and vessel systems, providing invaluable insight during surveys. He is dedicated to providing the highest level of service to every client, ensuring their marine endeavors sail smoothly from start to finish.

Denis is strongly committed to continuous learning and accreditation, from mastering yacht and small craft surveying to obtaining certifications in marine corrosion, he strives to stay at the forefront of his field. Beyond his qualifications, Denis brings firsthand experience to the table, having logged over 6000 nautical miles as a skipper and first mate, including traversing the challenging waters of the Barents Sea.

As an Affiliate Member of the International Institute of Marine Surveying (IIMS) and a member of the American Boat and Yacht Council (ABYC), he is deeply embedded in the marine community.