Back to Resources
    Owner's Guide

    The Educated Yacht Owner’s Video Library: Marine Surveys, Saltwater DIY & California Compliance

    By Nathaniel Barré, CEO & Broker of Record | Coronado Yacht Sales and Services

    At Coronado Yacht Sales and Services, our favorite clients—both on the brokerage side and in our yacht management program—are educated boaters who understand how their vessel’s systems work. Whether you are preparing to put a 10% deposit into escrow on your next boat, prepping your current vessel to pass a buyer’s survey with zero re-trading, or learning what happens beneath the waterline in San Diego Bay, seeing a system broken down on camera is worth a thousand words.

    We have curated this hands-on video guide featuring independent marine surveyors, ABYC electrical engineers, diesel technicians, and DIY mechanics (never competing sales pitches), paired with the California-specific ownership rules every local captain needs to know.

    1. Inside the Marine Survey: What Accredited Surveyors Actually Test

    When you buy or sell a yacht under the California Yacht Brokers Association (CYBA) Purchase and Sale Agreement, the Trial Run and Survey Contingency is the most critical milestone in the transaction. An accredited surveyor (SAMS or NAMS) doesn’t just walk through the cabin looking at cushions—they use phenolic hammers, moisture meters, and thermal cameras to inspect structural coring, stringers, and underwater hardware.

    Watch before your survey

    • Fiberglass Hull Integrity & Percussion Testing (Atlantic Marine Surveys)

      Why watch: A quick, 83-second look from working marine surveyor Peter Mitalas demonstrating how surveyors “sound” a fiberglass hull and deck to hear the difference between solid laminate and delaminated or wet core.

    • Seacock & Thru-Hull Inspections (Everything Boats with Capt. Frank Lanier)

      Why watch: Retired Coast Guard officer and accredited surveyor Capt. Frank Lanier breaks down the #1 below-waterline survey failure: frozen, corroded, or mismatched bronze/Marelon seacocks, improper backing blocks, and double hose-clamp standards.

    • Inside a Full Haul-Out & Marine Survey on a 60-Ton Trawler (M/V Noeta)

      Why watch: An owner-perspective walkthrough of a major yacht survey, from the travel-lift haul-out and running gear check to rigorous systems testing.

    Coronado Yacht Services Tip: Before we ever take a brokerage listing live—or during our twice-monthly management inspections—we exercise every seacock on board so they never freeze open or closed. Walking into a buyer’s survey with smooth-operating valves and dry bilges saves thousands at the negotiating table.

    2. Raw-Water Cooling Systems: Fighting Saltwater Scale in Southern California

    Unlike freshwater lakes, San Diego Bay and coastal Pacific waters are a year-round warm saltwater environment. If calcium scale and marine growth build up inside your heat exchangers or aftercoolers, engine temperatures creep up at cruising RPM—often revealing themselves for the first time during a wide-open-throttle (WOT) sea trial.

    Watch how marine cooling systems work and flush

    3. Sterndrives, Bellows & Exhaust Risers (Runabouts & Express Cruisers)

    If you own or are shopping for a 24’–38’ family bowrider or express cruiser powered by MerCruiser or Volvo Penta sterndrives, your two most important maintenance dates aren’t engine hours—they are calendar years on the exhaust manifolds/risers and rubber outdrive bellows.

    Watch the teardowns

    • MerCruiser Bravo III Bellows Replacement Step-by-Step (Vassmotorsports)

      Why watch: Shows why outdrive bellows are a critical 3-to-5-year service item in San Diego salt water—and how a torn U-joint or shift-cable boot lets seawater into the bilge and gimbal bearing.

    • Bravo III Bellows & Gear Lube Line Service (Slick Mick)

      Why watch: A second hands-on look at bellows and gear lube line replacement.

    • Rebuilding the Gimbal Housing & Bellows (Zach’s Garage)

      Why watch: A comprehensive look at the transom assembly, gimbal ring, trim senders, and the alignment bar tool used when pulling an outdrive for annual service.

    • MerCruiser Exhaust Riser Gaskets Explained (Marine Repair and Information)

      Why watch: In 60 seconds, a marine mechanic shows the difference between restricted, open, and blocked riser-to-manifold gaskets—the mating surface that corrodes over 4–6 years in salt water and can let water into the cylinders.

    4. Marine Electrical Systems, ABYC Standards & LiFePO4 Upgrades

    Electrical deficiencies make up nearly half of the “Condition & Valuation” findings on used boat surveys—ranging from wing-nuts on battery terminals and un-fused positive leads to improperly configured lithium (LiFePO4) house banks that overheat standard alternators.

    Watch the experts

    5. California-Specific Boat Ownership Realities

    Most DIY boating videos are filmed in Florida or on the East Coast, so they skip the regulatory, environmental, and tax rules that govern boating in San Diego Bay, Mission Bay, and California coastal waters. Here are the four California pillars every local owner must manage.

    A. The California Boater Card (Now Mandatory for All Ages)

    As of January 1, 2025, the California Division of Boating and Waterways (DBW) completed its multi-year phase-in: every person operating a motorized vessel on California waterways, regardless of age, must carry a lifetime California Boater Card. Keep a physical card in your ditch bag or helm wallet—Harbor Police and the Coast Guard check for it alongside your registration and PFDs.

    B. Copper Bottom Paint Restrictions & Hull Diving Rules

    San Diego Bay and Shelter Island are subject to strict regional water quality board mandates regarding copper leaching from antifouling bottom paint.

    • What it means for your hull: If you apply copper-based ablative or hard epoxy paint at a San Diego boatyard, your hull diver must use soft pads or cloths rather than aggressive brushes—or you can opt for biocide-free/silicone foul-release coatings or copper-compliant formulations during your 3-year haul-out cycle.

    C. San Diego Bay No-Discharge Zones (NDZ) & Y-Valve Compliance

    All of San Diego Bay, Glorietta Bay, the Coronado Cays, and Mission Bay are strictly enforced No-Discharge Zones.

    • Survey & USCG inspection rule: Even if your yacht has a macerator for legal offshore discharge beyond the 3-mile limit, your Y-valve or overboard discharge seacock must be physically locked, zip-tied, or have the handle removed while inside the bay. An unsecured Y-valve is an automatic Coast Guard boarding citation and a guaranteed red flag on a marine survey.

    D. California Title, Use Tax & Annual Property Tax

    • USCG Documentation vs. CA DMV (CF#) registration: Vessels under roughly 26’–30’ are typically titled through the California DMV with a CF bow number (and need a current Vessel Carbon Monoxide Warning Sticker on the transom and helm to receive registration tags). Larger yachts are usually USCG Documented, so ownership and preferred ship mortgages are tracked federally through the National Vessel Documentation Center—and bow numbers are replaced by the vessel’s official name and hailing port on the stern.
    • Annual San Diego County boat property tax (~1.1%): Whoever owns a vessel berthed in San Diego County at 12:01 AM on January 1st receives the unsecured property tax bill from the County Assessor later that summer. When buying or selling in Q4 or Q1, make sure your broker clarifies how property taxes are handled in escrow. For a full ownership budget, see The True Cost of Owning a 40’–55’ Yacht in San Diego.

    Want a Professional Eye on Your Boat Before You Buy or Sell?

    Whether you want a Pre-Listing Audit to knock out survey deficiencies before your yacht hits the market, or you want Coronado Yacht Services to handle bi-monthly mechanical exercising, hull diving, and vendor coordination so you never worry about frozen seacocks or scaled heat exchangers, stop by our office in the Cays.

    Coronado Yacht Sales and Services
    511B Grand Caribe Causeway, Coronado, CA 92118
    (619) 313-3664 | coronadoyachtsales.com

    Have Questions? Contact Us

    Our yacht consultants are here to help with any questions about this topic.