

Guiding Excellence at Sea
Yacht Consultancy

From Vision to Voyage
Project Management, New Build Supervision, and Refit Management

Navigating Compliance
Audits & Inspections
Our Core Services
We provide tailored solutions for every aspect of yacht ownership — from safety audits and inspections to project management and operational consultancy.
Testimonials
Hans Lettinga played a critical role in the successful security transition of the motor yacht Carinthia VII from private to commercial registry. He led a thorough ship security assessment, developed a compliant security system under the ISPS Code, and worked closely with the Marshall Islands Flag State to secure approval. His deep expertise and professionalism were key in ensuring a smooth conversion and full regulatory compliance.
R. Yacht Management
MY Carinthia VII – 97.20 m
Blohm & Voss
Hans Lettinga played a pivotal role during the 20-year special survey and refit of MY Anedigmi. He oversaw critical technical work, including the replacement of corroded shell plating and the port-side propeller shaft, ensuring that all tasks adhered to classification standards. Hans’s project management expertise, technical insight, and calm, solutions-driven approach were invaluable throughout the process and highly appreciated by both management and the vessel’s ownership.
Owner Representative
MY Anedigmi – 50m
STP Mallorca
Working with Hans Lettinga has been a true asset to our operation. As our auditor, manager, and DPA/CSO, he combined professionalism, regulatory expertise, and a practical hands-on approach that supported both crew and vessel. His audits were thorough yet pragmatic, and the cloud-based safety system he introduced made compliance straightforward and effective. We highly recommend Hans to any yacht seeking a knowledgeable and dependable compliance partner.
Captain & Manager
MY Irimari – 63m
Sunrise Yachts
Tailored Maritime Solutions
From project management to ISM audits, we deliver custom strategies that keep your yacht safe, efficient, and ready to perform.
A Trusted Partner at Sea
Honest, transparent, and client-focused — building lasting relationships that ensure your success on the water.
Safety & Sustainability First
Protecting your crew, your vessel, and the environment with proven systems and forward-thinking practices.
Expertise You Can Rely On
Over 22 years of hands-on experience in superyacht operations, refits, and compliance
Why Choose Lettinga Maritime Services ?
For years, we have successfully conducted comprehensive yacht audits, complex refits, and new build supervision—earning the trust of discerning clients worldwide. Our proven track record, attention to detail, and commitment to excellence ensure consistently reliable results and client satisfaction.


