Underwater Hull Cleaning · Pinellas County
Drag is the most expensive thing on your boat — and the easiest to remove. We clean hulls in the water, at your dock, and send you photo and video proof of every dive. No haul-out, no yard bill, no guessing what's down there.
Why it pays
In warm Gulf water, growth returns fast. Staying ahead of it isn't maintenance for its own sake — it's the cheapest performance you can buy.
Even a thin film of slime adds drag. A clean hull moves the same throttle farther on less fuel — the savings show up on every outing.
Barnacles and growth quietly rob RPMs and top-end. Clean running surfaces give your numbers back.
Hard growth that's left to set in tears at antifouling when it's finally removed. A steady, gentle cadence lets the paint last its full life.
Props, shafts, and struts stay clean and balanced, and your anodes get checked while we're down there.
What it is
Underwater hull cleaning is exactly what it sounds like — your boat's bottom is cleaned while it stays in the water, by a diver, at your slip. There's no haul-out, no travel lift, and no yard bill. For most boats kept in Pinellas County, it's the difference between a hull that performs like new and one that's quietly dragging an extra coat of marine life everywhere it goes.
The growth comes in stages. First a slime layer — thin, slick, and building within days in warm water. Then soft growth: grass and early weed. Left longer, it hardens into barnacles and calcareous tube worms that bite into the paint. The longer the gap between cleanings, the more aggressive the removal has to be — which is why a steady, gentle cadence protects your bottom paint far better than waiting until the hull is fully fouled.
And every dive is documented. You get before-and-after photo or video plus a short condition note on your running gear, anodes, and paint — so you're never taking anyone's word for what's happening below your waterline.
Every cleaning includes
The entire wetted surface, bow to transom, including the boot stripe and waterline.
Propellers, shafts, and struts cleaned and checked for growth and balance.
Control surfaces cleaned so they move and bite the way they should.
Raw-water intakes and thru-hull fittings cleared so cooling and systems flow freely.
Anodes checked on every visit and replaced only when they're genuinely depleted.
Growth removed with the least aggressive method that works — to preserve your antifouling.
A short, plain-language note on what we found beneath the waterline.
Photo or video from the actual dive, sent straight to you.
How it works
Call or send a quick message with your boat, its length, and where it's kept.
You get a clear price and a recommended cadence — no surprises at the dock.
We clean in the water at your slip and film the work as we go.
Before-and-after media and a condition note land in your inbox.
More below the line
A full visual record of your hull, running gear, and anodes — before a purchase, an insurance claim, or just peace of mind.
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Anodes and running gear swapped in the water, on schedule — protecting your shafts and props from galvanic corrosion.
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Phones, keys, props, tools — if it went over the side, we'll go down and find it.
Learn more →In-water cleaning vs. haul-out
For routine growth, in-water hull cleaning beats a haul-out on every axis that matters — cost, downtime, and wear on your boat. Hauling out has its place; keeping a clean hull between paint jobs isn't it.
A haul-out means scheduling a travel lift, paying a yard, and losing your boat for days — sometimes longer in season. In-water cleaning happens at your slip, on your schedule, with the boat back in service the same hour. There's no lift strap pressure on the hull, no trailering, no pressure-washing your antifouling off prematurely. For removing slime, grass, and barnacles on a regular cadence, a diver in the water is faster, cheaper, and gentler on the boat.
A haul-out earns its cost when the bottom paint itself needs to be stripped and reapplied, or when there's hull damage to inspect and repair below the waterline. Short of that, in-water cleaning is how a Pinellas boat stays fast and protected between those bigger jobs — which, on a steady cadence, come around far less often.
Instant estimate
Pick your vessel and length for a transparent, on-the-spot estimate. No forms, no waiting — just an honest starting figure for Pinellas water.
What hull cleaning costs
Hull cleaning is priced per foot of waterline length. What sets the per-visit number is how the boat is kept and how often it's cleaned — a boat on a tight cadence costs less per visit than one cleaned once a season, because there's simply less growth to remove.
The honest drivers of price are the length of the boat, the cleaning interval, the bottom-paint condition, and how much growth has built up since the last dive. A hull kept on a 3-to-4-week cadence stays in the easy range; a hull left for two or three months in warm Gulf water can carry a full skirt of barnacles that takes real work to clear. We quote every boat up front against your actual waterline length and condition — no surprises at the dock.
Hull cleaning FAQ
Straight answers about cadence, paint, and what you actually get.
Founder-led, standard-driven
Misting Monsoon Diving was founded by Jarrett Maryon, a PADI Advanced Master Diver and certified Dive Instructor, on a simple principle: every dive documented, every owner told the truth about their boat. As the company grows across Pinellas County, that principle doesn't bend — every diver we put in the water is trained and held to the founder's standard.
No rotating subcontractors. No guesswork about who's under your boat or whether the work was done right. Whether it's Jarrett on the dive or a diver he trained, you get the same documented, no-shortcuts standard — and the same proof in your inbox afterward.
— Jarrett Maryon, Founder & Lead Diver
Explore hull cleaning
Straight answers on cost and cadence, care built for every kind of boat, and divers who come to your marina, slip, or private dock — anywhere on the water in Pinellas County.
Precision beneath the waterline
Tell us your boat and where she's kept. We'll send a clear quote and a cleaning cadence built for Pinellas water.