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Hassle-free hull cleaning. Comprehensive, fast, and reliable. 

Providing Marin County with local expertise for hull maintenance:​

Get detailed, expert hull inspections

Deep hull cleaning with specialized tools

Zinc expertise tailored for your boat

Get a free quote and appointment within 24 hrs

Hi, I'm Peter Cresalia, a Marin County native with six generations of family history tied to this beautiful region. I was born and raised here — making me intimately familiar with its unique marine ecosystem and community.

I’ve been diving ever since I was a child and have over a decade of professional experience servicing vessels of all sizes from small leisure crafts to large commercial fishing boats. 


I take great pride in ensuring that all my customers feel supported and that their boats are cleaned to the highest standards using the latest cutting-edge tools.


I’m easily reachable with a quick text, call, or email. Feel free to contact me for a quote on my services or if you need a consultation.

About me

Get a booking within 24 hr.

Text, call, or email me and I’ll get you an appointment date within 24 hours.

Get a free consult and estimate.

I'll assess your needs and give a cost estimate.

Hull cleaning and zinc replacement.

It usually takes 1-3 hours to service most boats unless there’s extensive work to be done.

Most times, customers don’t need to be onsite.

Get a detailed report.

I’ll provide a report tailored to your boat’s condition. 


You’ll get specific recommendations on how to maintain your boat’s performance.

Our Process

Hull Cleaning

Starting at $120

$5.25 per foot

Up to 49ft: $5.25 Per Foot

Vessels larger than 50 feet will have a custom price

Rates are based on a two month cleaning schedule

Additional charges may apply for heavy growth and debris removal

Vessels are measured in Length Over All

Any anodes replaced during a cleaning is $15 each for labor plus the cost of the anode

Includes replacing four anodes

Every anode after that is an additional $15 per anode

Price of anode is separate

Anode Replacement 


Vessel Inspection


Includes 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


Thank you, Peter.




I really value your work and your communication skills.



Thanks so much for your hard work. 

Professionals like you are definitely worth the project cost.



It can be intimidating to schedule that first call and trust a new service provider.

At Cresalia Diving Service, you will always feel 100% supported. I’m a quick text or phone call away and can guarantee a 24 hour response time to all inquiries.

In fact, 99% of our clients become recurring customers and will gladly make a referral. They consistently highlight our customer support, professionalism, and open transparency for the reasons why.

Fast response times & clear communication

Hull cleaning can seem like a costly expense, however it’s a long term investment that will prevent costly repairs down the line if left unmaintained.

A thorough hull cleaning has immediate benefits: better fuel efficiency, speed, and performance from your boat. And the cleaning can be done in a couple of hours thanks to our use of the latest cutting-edge tools.


You’ll also get a detailed report at the end outlining your vessel's conditions with tailored recommendations on how to maintain its performance.

All-in-one hull cleaning, vessel inspection and maintenance


of clients become recurring customers and would happily give referrals


marinas and harbors serviced


years of professional diving experience on different vessels


Zinc replacements done

  • With Cresalia Diving Service, you’re guaranteed fast, responsive, and clear communication. I take pride in making sure all my customers feel fully supported.I have over a decade of professional diving experience and invest in the latest cleaning tools to make sure your boat will be immaculately clean and well maintained.I’m also part of the Marin County community. I was born and raised here, with family ties going back six generations. This gives me a deep understanding of our region’s unique marine ecosystem.

  • You can find the full list of prices and services here. On rare cases where there’s extensive work to be done, a surcharge may apply. It’s best to contact me to get a tailored cost estimate.

  • You’re more than welcome to attend the session. However,  most clients I’ve serviced choose not to stay to save time. I’ll be easily reachable by phone during the appointment and I’ll be providing updates as the work progresses. At the end, you’ll get a detailed report and I’ll be available for any follow up questions.

  • On a technical level, having your hull cleaned and zincs inspected every 2-3 months will help prolong the bottom paint’s lifespan. You’ll get better fuel efficiency and performance. It’ll also prevent any costly repairs further down the line if things are left unchecked.I also take great pride in providing excellent customer support. 99% of our clients become recurring customers because they have the peace of mind that their boat will be handled with utmost care and attention.I also invest in the latest cutting edge tools to make sure everything is cleaned to the highest possible standards.

  • Cleanings are typically done in 1 to 3 hours. This may vary based on the size of the vessel and the extent of cleaning required. 

  • Its generally recommended to schedule a cleaning every 1-3 months for vessels in saltwater environments. This can vary depending on the type of vessel, so feel free to reach out to get a tailored consult. For more on best practices, you can visit our Resources page.

  • In addition to the list of locations below, I also service private docks. If you don’t see your location below, feel free to contact me and we’ll sort something out.

    • Bel Marin Keys Yacht Club

    • Clipper Yacht Harbor

    • Corinthian Yacht Club

    • Horseshoe Bay Harbor & Presidio Yacht Club

    • Loch Lomond Marina & Yacht Club

    • Marin Yacht Harbor & Yacht Club

    • Marina Plaza Harbor

    • Paradise Cay Yacht Harbor

    • Pelican Harbor

    • Presidio Yacht Club

    • Richardson Bay Marina

    • San Francisco Yacht Club

    • San Rafael Yacht Club

    • Sausalito Cruising Club

    • Sausalito Marine Harbor

    • Sausalito Yacht Club

    • Sausalito Yacht Harbor

    • Schoonmaker Pt. Marina

Frequently Asked Questions

Simply email me at or fill out the form below and get a response within 24 hours.

Providing Marin County with fast & reliable expert service

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