Simply email me at pcresalia@gmail.com or fill out the form below and get a response within 24 hours.
Providing Marin County with fast & reliable expert service
About Cresalia Diving Service
Hi, I’m Peter Cresalia and I’m a seasoned diver with over a decade of professional experience servicing vessels of all sizes from small yachts to big commercial fishing boats.
Unlike some divers who tack on a hull inspection service, I’m a trained expert who’s seen countless hull issues and can give you the right recommendations for quick and cost-effective solutions.
Being a Marin County native with six generations of family history tied to this region, I feel deeply connected to its community and take great pride in supporting its boaters.
If you need a consultation or quote, don’t hesitate to reach out with a quick text, call, or email.
99%
of clients become recurring customers and would happily give referrals
21+
marinas and harbors serviced
25+
years of professional diving experience on different vessels
100+
hull inspections completed
Unmatched, comprehensive inspections
Our hull inspections are thorough and tailored to each customer’s needs. Some customers are looking to purchase a new boat and need a quick hull inspection. While others are experiencing issues with their steering and need an inspection before hauling their boat out. The inspections are usually completed in 1-3 hours and include a detailed report at the end with recommendations on how to fix potential problems.
Our examination checks for common issues such as:
Our Process
Here’s what you can expect from every appointment
Hull Fouling
Presence of marine growth such as barnacles, algae, or mollusks on the hull, which can increase drag, reduce fuel efficiency, and impact the vessel's speed.
Corrosion
Corrosion on the hull, shaft, and propeller.
Blistering and Osmosis
Formation of blisters and osmotic damage caused by water intrusion into the hull, potentially leading to structural issues and reduced buoyancy.
Impact Damage
Dents, scratches, or other damage caused by collisions with underwater obstacles, docks, or other vessels.
Cracks and Delamination
Cracks in the hull or delamination of composite materials.
Anodes Condition
The condition of sacrificial zinc anodes. If these are corroded or depleted, the hull may be more susceptible to corrosion.
Through-Hull Fittings and Seals
Inspection of through-hull fittings, valves, and seals for any signs of wear, damage, or leaks that could lead to water ingress.
Paint and Coating Integrity
Examination of the condition of antifouling paint and other coatings, as deterioration can reduce their effectiveness in preventing fouling and corrosion.
Propeller and Shaft Inspection
Assessment of the propeller and shaft for damage, misalignment, or fouling that can affect the vessel's propulsion system.
Rudder Issues
Inspection of the rudder for damage, misalignment, or excessive play, as these issues can impact the vessel's maneuverability.
Anodes Condition
The condition of sacrificial zinc anodes. If these are corroded or depleted, the hull may be more susceptible to corrosion.
Through-Hull Fittings and Seals
Inspection of through-hull fittings, valves, and seals for any signs of wear, damage, or leaks that could lead to water ingress.
Paint and Coating Integrity
Examination of the condition of antifouling paint and other coatings, as deterioration can reduce their effectiveness in preventing fouling and corrosion.
Propeller and Shaft Inspection
Assessment of the propeller and shaft for damage, misalignment, or fouling that can affect the vessel's propulsion system.
Rudder Issues
Inspection of the rudder for damage, misalignment, or excessive play, as these issues can impact the vessel's maneuverability.
Easy bookings. Consultations within 24 hrs.
Get responsive, real-time communication during the process.
Thorough inspections in 1-3 hours.
Detailed summary report and recommendations.
What to expect:
Initial consultation
Tailored and thorough underwater inspection
Real-time updates on the job
Detailed inspection report & recommendations
Underwater photos upon request. (Quality of photos can vary due to visibility conditions)
Services & Rates
Peter is reliable, prompt and the nicest guy.
He replaced my zinc anodes in no time and coached me proper boat maintenance.
Holly F.
Crab Captain
I was really impressed with Peter’s services.
It was so easy to book a cleaning and get everything done in a few hours.
Bel Marin Keys
Customer
Thank you, Peter.
I really value your work and your communication skills.
Sausalito
Customer
Thanks so much for your hard work.
Professionals like you are definitely worth the project cost.
Tiburon
Customer
Marinas & Yacht Harbors We Service
If you don't see your harbor listed please reach out to us. We'd love to help.
North Marin
Bel Marin Keys Yacht Club
Loch Lomond Marina & Yacht Club
Marin Yacht Harbor & Yacht Club
San Rafael Yacht Club
South Marin
Clipper Yacht Harbor
Corinthian Yacht Club
Horseshoe Bay Harbor
Presidio Yacht Club
Marina Plaza Harbor
Paradise Cay Yacht Harbor
Pelican Harbor
Richardson Bay Marina
Sausalito Cruising Club
Sausalito Marine Harbor
Sausalito Yacht Club
Sausalito Yacht Harbor
Schoonmaker Pt. Marina
The San Francisco Yacht Club
North San Francisco
San Francisco Marina Yacht Club
East Harbor
Yacht Harbor
There are many service providers out there and we encourage you to pick one you’re comfortable working with. Clients choose us because of our decades of diving experience, our commitment to give back to Marin County’s community, and our professional customer service.
We’re easily reachable and are happy to give technical guidance on any questions you might have. We give accurate quotes and are transparent about our work — so you don’t have to worry about surprise charges. In short, we provide the peace of mind to our clients that their boat is being looked after with utmost care and attention.
We only provide underwater vessel hull inspection at this time. For most scenarios such as a routine checkup or assessing a boat’s condition for purchase, this can be a sufficient, convenient, and quick solution without the hassles and costs of doing a full haul out.