Written & Technically Reviewed by: Senior Commercial Diver & Marine Maintenance Specialist at Underwater Marine Services | Last Updated: November 2026
If you own a boat in Fort Lauderdale, Miami, or anywhere along the U.S. coastline, bottom cleaning is one of those recurring maintenance expenses that can vary considerably from one marina to another. A 35-foot center console may receive a straightforward cleaning, while a 65-foot yacht with heavy barnacle growth can require several hours of additional underwater work.
Boat bottom cleaning cost in 2026 generally ranges from approximately $1.50 to $5.50 per foot in many U.S. markets, while published South Florida rates range from roughly $3 to $9.50 per foot, depending on vessel size, cleaning frequency, and hull condition. Most professional divers charge by overall vessel length, with minimum service fees and additional charges for heavy marine growth or specialty equipment.
Below, we break down typical national pricing, South Florida diver rates, monthly maintenance costs, and the factors that determine what you should actually expect to pay.
How Much Does Boat Bottom Cleaning Cost Per Foot in 2026?
Most underwater hull cleaning companies calculate their labor using the vessel’s overall length (LOA). The per-foot rate generally decreases with recurring maintenance in some markets, while larger yachts, complicated running gear, and heavy marine growth can increase the price.
For budgeting purposes, use approximately $1.50–$4.00 per foot as a broad national planning range for routine service, with higher rates possible in premium coastal markets. These are indicative market estimates, not a statistically measured national average.
| Service Type | Estimated Cost Per Foot | Typical Billing |
|---|---|---|
| Routine scheduled hull cleaning | $1.50–$4.00 | Per cleaning |
| Standard one-time cleaning | $3.00–$5.50 | Per cleaning |
| South Florida routine cleaning | $3.00–$6.50+ | Per cleaning |
| Large yacht cleaning | $6.00–$9.50+ | Per cleaning |
| Heavy barnacle removal | Quoted separately | Hourly or per job |
These ranges combine published service rate cards and market estimates. Actual quotes vary by location and vessel configuration. For example, published Southwest Florida pricing starts around $3.00–$3.50 per foot, while Miami-area pricing can start at $6.00 per foot and increase with vessel length.
Compare the scope of work before choosing the lowest quote. One diver may clean only the flat hull surfaces, while another includes propellers, shafts, rudders, and a basic underwater inspection.
South Florida Boat Hull Cleaning Cost: Miami vs. Fort Lauderdale
South Florida has a demanding marine environment. Warm water, marina conditions, sunlight, and nutrient availability can support rapid marine growth. Consequently, boat owners often need more frequent underwater maintenance than owners in cooler waters.
Published South Florida rate cards show a considerable spread. Some Fort Lauderdale-area listings advertise routine service around $3.00–$5.50 per foot, while published Miami pricing starts around $6.00 per foot and increases for larger vessels.
Fort Lauderdale diver hull cleaning rates
Fort Lauderdale boat owners can find published routine cleaning rates around $3.00–$5.50 per foot. Actual pricing depends on the marina, vessel dimensions, cleaning history, and whether the diver is servicing a single boat or an established monthly route.
For example, a 40-foot vessel at $4.00 per foot would cost $160 per visit before any applicable minimum charge or additional work. A provider with a $200 minimum would invoice the minimum instead.
Yacht bottom cleaning cost in Miami
Miami pricing can be higher, particularly for larger yachts and vessels with complicated underwater running gear. One published local rate schedule starts at $6.00 per foot for smaller monohulls, increasing to $9.50 per foot for vessels measuring 100–170 feet.
Using that published schedule, a 45-foot sportfish costs approximately $303.75 per routine cleaning, while a 65-foot motor yacht costs approximately $487.50.
For a more detailed breakdown, compare professional underwater hull cleaning services in South Florida before committing to a recurring maintenance agreement.
Monthly Hull Cleaning Price: What Should Boat Owners Budget?
Monthly hull cleaning is generally more economical over time because the diver removes slime and early-stage marine growth before thick barnacles and calcareous deposits become established. Regular maintenance also makes cleaning time and scheduling more predictable.
A monthly service agreement does not automatically guarantee a discount. Your provider may charge a fixed per-foot rate, a minimum visit fee, or a vessel-specific monthly price.
Example monthly cleaning budgets
| Boat Length | Example Rate | Estimated Monthly Cost | Annual Budget (12 Visits) |
|---|---|---|---|
| 25 feet | $4.00/ft | $100* | $1,200* |
| 35 feet | $4.00/ft | $140* | $1,680* |
| 45 feet | $4.00/ft | $180* | $2,160* |
| 60 feet | $5.00/ft | $300 | $3,600 |
| 80 feet | $6.00/ft | $480 | $5,760 |
*Illustrative calculations before minimum charges, taxes on applicable parts, or additional services. A provider’s minimum visit fee may increase the actual invoice.
For example, an advertised $200 minimum would make the 25-foot, 35-foot, and 45-foot examples cost $200 per visit if that minimum applies. Always request the final monthly price rather than relying exclusively on the advertised per-foot rate.
What Factors Increase Underwater Boat Cleaning Prices?
Boat length is only the starting point. The condition of the underwater surfaces, type of antifouling paint, marina access, and amount of running gear all influence the labor required for a professional cleaning.
1. Marine growth and cleaning history
A boat cleaned every month generally requires less work than one left untouched for six months. Slime and soft algae can often be removed relatively quickly, whereas established barnacles and oysters require more careful removal.
Some published Miami pricing schedules apply a 1.5 multiplier when a vessel has gone approximately two months without cleaning, with heavily fouled boats charged hourly. This illustrates why postponing routine maintenance can increase your eventual cleaning bill.
2. Hull shape and vessel configuration
A wide-beam yacht, catamaran, or vessel with complex underwater geometry can require more diver time than a comparable-length monohull. Additional surfaces, tunnels, thrusters, and difficult access points all affect the final quote.
3. Bottom paint condition
Antifouling coatings are designed to discourage marine organisms from attaching to the hull. However, aggressive underwater scrubbing can remove paint along with the growth, shortening coating life and increasing future maintenance expenses.
Our underwater cavitation cleaning services address marine growth on running gear and propulsion components, where buildup can interfere with proper water flow and propeller performance.
4. Running gear and additional equipment
Propellers, shafts, rudders, trim tabs, bow thrusters, and stern drives can all require additional attention. Some companies include basic running-gear cleaning in their standard rate, while others charge separately.
Ask whether zinc anode inspection and replacement is included or billed separately. Sacrificial anodes protect underwater metals by corroding in place of more valuable components.
Why Professional Hull Cleaning Matters Beyond Appearance
A clean underwater surface helps maintain the vessel’s designed hydrodynamic performance. Marine growth increases surface roughness, which creates additional resistance as the boat moves through water. Your engines may need to work harder to maintain the same speed.
The International Maritime Organization recognizes biofouling management as an important part of reducing invasive aquatic species transfer. Its 2023 Biofouling Guidelines, Resolution MEPC.378(80), recommend planned management and responsible cleaning practices.
IMO Resolution MEPC.378(80) identifies biofouling as a pathway for invasive aquatic species and emphasizes that in-water cleaning should minimize the release of organisms and harmful waste into surrounding waters.
Read the IMO Biofouling Guidelines for the international framework.
Protecting your hull coating and marine environment
Professional cleaning is not simply about removing every visible organism. The diver must select an appropriate cleaning method for the coating and growth condition.
The U.S. Environmental Protection Agency distinguishes between in-water cleaning with capture and cleaning without capture. Its vessel discharge requirements address the release of antifouling coating materials and biological waste. Owners should check applicable federal, state, and marina rules before scheduling underwater cleaning.
Review the EPA vessel discharge standards for additional guidance.
What Should a Professional Boat Bottom Cleaning Service Include?
A professional underwater cleaning visit should deliver more than a visually clean hull. You should know which surfaces were serviced, what condition the diver observed, and whether any developing maintenance issues require attention.
A typical service scope may include:
- Removal of slime, algae, and suitable marine growth from the hull.
- Cleaning of propellers and accessible running gear.
- Inspection of visible zinc anodes and underwater metal components.
- Observation of damaged, peeling, or worn bottom paint.
- Checking for visible fishing line, ropes, or debris around propulsion equipment.
- Reporting unusual damage, corrosion, or suspected mechanical problems.
- Before-and-after photographs or video when included in the service agreement.
We also recommend periodic underwater vessel inspections when you need a closer assessment of the hull, running gear, or underwater components.
DIY Hull Cleaning vs. Hiring a Professional Commercial Diver
Cleaning a vessel underwater without the right equipment and training can expose you to entanglement, poor visibility, sharp marine growth, and hazardous conditions around running gear. Professional divers understand how to work safely around underwater equipment and recognize signs that require further inspection.
There is also a coating-protection issue. Using the wrong brush or excessive scraping pressure can damage antifouling paint. A qualified service provider should select tools according to the coating manufacturer’s recommendations and the vessel’s condition.
For topside maintenance, our boat washing and detailing services complement regular underwater maintenance. Marina infrastructure also deserves attention, including underwater piling cleaning where appropriate.
Frequently Asked Questions
How much does boat bottom cleaning cost per foot in 2026?
Routine underwater hull cleaning commonly falls within an estimated $1.50–$4.00 per foot in many U.S. markets. South Florida published rates vary more widely, from approximately $3.00 to $9.50 per foot. Vessel length, marina access, hull condition, and service frequency determine the final quote.
How much does it cost to have a 40-foot boat cleaned underwater?
A 40-foot boat could cost approximately $120–$220 at rates of $3.00–$5.50 per foot. In a market charging $6.00 per foot, the calculation becomes $240. Minimum service charges, heavy growth, and additional running-gear work can increase the final invoice.
How often should I have my boat bottom cleaned in South Florida?
Many boats kept in South Florida marinas benefit from cleaning every two to four weeks, depending on bottom paint, water conditions, and vessel use. Monthly service is a common starting schedule. Your diver can recommend adjustments after observing how quickly marine growth develops.
Is monthly hull cleaning cheaper than occasional cleaning?
Monthly hull cleaning can reduce the cost of each visit because it prevents heavy barnacle and oyster accumulation. It also makes labor more predictable. However, discounts are not universal, so compare the actual recurring service price with one-time cleaning rates before choosing a maintenance plan.
Does underwater hull cleaning include propeller cleaning?
Not always. Some divers include propellers, shafts, struts, and rudders in their standard hull cleaning package, while others charge additional fees. Confirm the exact service scope before booking, especially if your vessel has stern drives, pod drives, or multiple propulsion systems.
Can a diver clean my boat without taking it out of the water?
Yes. Qualified commercial divers can perform suitable hull cleaning and underwater maintenance while your boat remains in its slip or at anchor. The diver must assess coating condition, marine growth, visibility, access, and applicable environmental restrictions before selecting an appropriate cleaning method.
Read More: Professional Underwater Marine Maintenance
Understanding hull cleaning costs is only one part of protecting your vessel. Explore more practical marine maintenance advice, underwater service information, and professional diving insights in our Underwater Marine Services articles and marine maintenance resources.
Final Thoughts: Get the Right Boat Bottom Cleaning Cost for Your Vessel
The right boat bottom cleaning cost depends on more than the length printed on your registration. Your hull condition, antifouling coating, marina location, running gear, and cleaning schedule all influence the amount of work involved. Comparing the full scope of service is the best way to understand what you are paying for.
Whether you operate a 30-foot center console in Miami or a larger yacht in Fort Lauderdale, regular boat bottom cleaning cost should be evaluated as part of your ongoing vessel maintenance budget. A consistent cleaning schedule, responsible cleaning methods, and professional underwater observations can help protect your hull and running gear throughout the year.
At Underwater Marine Services, we help vessel owners maintain their underwater equipment through professional marine maintenance and commercial diving services throughout South Florida. Contact our team to discuss your vessel and arrange a service assessment.
Keep Your Vessel’s Bottom Clean and Properly Maintained
Don’t wait for heavy marine growth to affect your boat’s performance. Speak with our team about professional underwater maintenance for your vessel.
