BoatMend

Repair & maintenance guides

Plain-English, step by step, written for owners. Pick your engine to see the guides that apply to it.

387 of 509 guides · page 14 of 17

Buying & ownershipEasy

Renaming a Boat: Paperwork, Removing the Old Name and the Optional Ceremony

Change your boat's name the right way: what a state-registered boat needs versus a Coast Guard documented boat (name change and hailing port go through the NVDC before you letter the hull), getting every trace of the old name off, lettering rules for documented boats, who else to tell (insurer, marina, MMSI, EPIRB, AIS), and the traditional renaming ceremony if you want the fun.

4 h All engines Shop: $150-600
Buying & ownershipModerateDraft

Renting Out Your Boat on Peer-to-Peer Apps: Insurance, Bareboat vs. Captained, State Rental Laws, Taxes and Wear

Thinking of listing your boat on a peer-to-peer rental platform to offset ownership costs? Learn why your personal policy probably won't cover it, what platform insurance does and doesn't do, the legal difference between a bareboat rental and a captained trip, state livery laws like Florida's, how rental income is taxed, and the real cost of extra hours and wear. Practical guidance, not legal, tax or insurance advice.

1 h 30 min All engines
TrailerAdvanced

Replacing a Boat Trailer Axle: When You Need One and How to Order the Right Size

A bent, rusted-through or undersized axle can't be fixed with new bearings. Learn the signs, the difference between straight, drop and torsion axles, the measurements a supplier needs (hub face, spring centers), what to specify for saltwater, and why this is usually a trailer-shop job.

5 h All engines Shop: $400-1500
Hull & systemsAdvanced

Replacing a Built-In Boat Fuel Tank: What's Involved and Why It's Usually a Pro Job

A leaking built-in gas tank is a fire and explosion risk that has to be fixed, not patched. Learn the signs a tank needs replacing, why foamed-in aluminum tanks corrode, what a compliant replacement tank and label look like, how access, grounding, hoses, vents and foam should be handled, and how to plan and check the work.

8 h Outboard, Sterndrive (I/O), Gas inboard, Jet boat, Marine diesel Shop: $1500-6000
Hull & systemsAdvanced

Replacing a Seacock or Through-Hull Fitting

When a seacock is frozen, corroded or really a gate valve, it has to be replaced with the boat out of the water. Learn what a proper seacock is, bronze vs Marelon, why the through-hull and backing block usually get replaced too, how the job is done, and when to hand it to a yard.

6 h All engines Shop: $400-1200
Rules & seamanshipEasy

Right-of-Way on the Water: The Navigation Rules Every Recreational Boater Should Know

There are no lanes or stop signs on the water, so the Navigation Rules decide who keeps course and who gets out of the way. Learn stand-on and give-way, meeting head-on, crossing, overtaking, sail versus power, narrow channels, big ships, safe speed and keeping a proper lookout, with the rule numbers from the U.S. Inland Navigation Rules (33 CFR Part 83).

30 min All engines
TrailerModerate

Roadside Trailer Repairs: Carrying a Spare Hub and Changing a Hub or Tire Safely

Why a pre-greased spare hub and a real spare tire belong in every boat-trailer kit, how to pick the right ones, and how to change a failed hub or a flat on the shoulder without getting hurt: getting off the road, warning triangles, chocks, frame jack points, a lug wrench that fits, and the checks to make afterward.

1 h All engines Shop: $150-400
Hull & systemsModerate

Roller Furler Care: Inspection, Drum and Swivel Service, and Halyard Wrap

Keep your headsail roller furler turning easily with a yearly unroll-and-inspect, fresh-water rinses of the drum and swivel, a correct halyard angle and a clean furling line lead. A neglected furler can jam with the sail half out, and a halyard wrap can damage the forestay.

3 h All engines Shop: $250-900
Hull & systemsModerate

Rudder, Rudder Bearings and Steering Gear Inspection (Sailboats and Inboards)

Check your rudder for play, water inside the blade and stock corrosion, inspect the rudder tube and its seal, and go over cables, sheaves, quadrant and stops so the steering does not fail when you need it. Includes how to find, fit and practice with the emergency tiller.

2 h All engines Shop: $300-1500
ElectricalEasy

Running a Boat Generator at the Right Load: Switching Sequence, Balancing and Avoiding Wet Stacking

Get more life out of your marine generator by starting and stopping it with the AC loads off, switching sources in the right order, keeping it loaded enough to avoid wet stacking and carbon buildup, and moving small loads to the inverter. Includes a simple monthly exercise routine.

1 h Marine diesel, Gas inboard
Hull & systemsEasy

Running Rigging Care: Inspecting Halyards, Sheets and Dyneema Lines

Check your halyards, sheets and control lines for chafe, sun damage, glazing and cover slip, wash them the right way, end-for-end them to spread the wear, and know when a line has to go. A halyard that parts drops a sail; a sheet that parts in a gust can be worse.

2 h All engines Shop: $150-400
Hull & systemsEasy

Sail Care and Winter Storage: Rinse, Dry, Inspect, Fold and Store

Keep your sails out of the sun, rinse and dry them before they go away, catch small tears and rotten stitching early, and fold and store them so they come back in spring without mildew or hard creases. Good habits can add years to an expensive set of sails.

3 h All engines Shop: $100-400
Hull & systemsModerate

Sailboat Keel Bolts and the Keel-Hull Joint: Signs of Trouble and What to Do

Learn to spot the warning signs at your keel joint and keel bolts, from a "smile" crack and rust weeps to wet bilges and loose nuts, and what to check after any grounding. Explains why re-torquing, pulling bolts and dropping the keel are jobs for a surveyor and a yard.

1 h 30 min All engines Shop: $400-1500
SeasonalModerate

Sailboat Spring Commissioning: Rig, Sails, Bottom, Engine and First Sail

A sailboat-specific spring checklist: inspect the rig before it goes up, bend on the sails, check through-hulls and the bottom, recommission the diesel or saildrive, bring the head and freshwater back, test electronics and safety gear, and shake it all down on a first sail. Each system links to its detailed BoatMend guide.

8 h All engines Shop: $500-1500
Hull & systemsAdvanced

Sailboat Wheel Steering Cables and Conduit - Service, Tension and Replacement

Keep a sailboat's wheel steering from failing: lubricate the chain, bearings and cables with what the maker specifies, set cable tension, check sheaves, idlers and conduit for wear and chafe, and replace worn cables or conduit before they part. Includes a dockside emergency tiller check.

4 h All engines Shop: $300-1200
Routine serviceModerate

Saildrive Care: Leg Oil, Hull Seal, Anodes and Prop

Keep a Volvo Penta or Yanmar saildrive healthy with simple owner checks (leg oil level and color, anodes, paint, fishing line) and plan the big items, like the rubber hull diaphragm, before they become an emergency. The saildrive seal is one of the largest holes in a sailboat's hull, so it deserves attention.

1 h Marine diesel Shop: $300-3000
Routine serviceModerate

Salt and Scale in Raw-Water Cooling: Flushing Habits, Descaling and When It's a Shop Job

Learn how salt and scale slowly narrow your engine's cooling passages, how to spot the warning signs (a temperature that creeps up over seasons, a weak telltale, thermostats sticking), the flushing habits that prevent it, which descaling products and methods engine makers accept, what never to pour through an engine, and when to hand the job to a shop.

1 h Outboard, Sterndrive (I/O), Gas inboard, Marine diesel Shop: $150-900
Buying & ownershipModerate

Salvage and Branded Title Boats: What They Mean, the Risks, and How to Check Before You Buy

Understand boats that an insurer declared a total loss: what salvage, rebuilt and hull-damaged title brands mean, why flood and storm boats hide expensive problems, how branded titles affect insurance, financing and resale, how to dig into a boat's history, and what a survey should check. Title branding rules differ a lot by state, and some states don't brand boat titles at all.

3 h All engines
ElectricalModerate

Satellite Internet on Your Boat: Starlink Plans, Mounting, Power and Wiring

An owner's guide to putting Starlink aboard: which plans allow coastal, offshore and in-motion use (as of October 2026), how much battery it eats, 12-volt versus inverter power, where to mount the dish, and how to route and seal the cable without leaks.

4 h All engines Shop: $300-1500
SafetyEasy

Satellite Messenger vs PLB vs EPIRB: Which Emergency Device Should You Carry?

A PLB or EPIRB calls government search and rescue through the 406 MHz Cospas-Sarsat satellites with no subscription; a satellite messenger like an inReach or SPOT sends an SOS through a private network and adds texting and tracking for a monthly or yearly fee. Learn how each one alerts rescuers, what registration, subscriptions and batteries they need, what to carry for lakes, coastal and offshore boating, and how to test without causing a false alarm.

30 min All engines
SafetyEasyDraft

Seasickness: How to Prevent It and Care for Seasick Crew and Guests

Almost anyone can get seasick in the right conditions, but a few habits make a big difference. Learn why it happens, where to sit, what to eat and drink, how over-the-counter remedies fit in (and why the person running the boat must be careful with drowsy ones), how to look after someone who's sick, and when it might be something more serious. General information only, not medical advice.

10 min All engines
Buying & ownershipEasyDraft

Selling Your Boat: Broker, Private Sale, Consignment or Dealer Trade-In

Compare the four ways to sell a used boat (yacht broker, selling it yourself, dealer consignment and trade-in) on cost, effort, speed and risk, then handle the listing agreement, buyer scams, sea trial and survey etiquette, deposit and closing the right way. Practical help, not legal or financial advice.

2 h All engines
SafetyEasy

Set Up Your VHF Radio: MMSI, DSC, GPS Hookup and Radio Checks

Get a free or low-cost MMSI number, program it into your DSC radio, connect your GPS so a distress alert sends your exact position, check the antenna, and learn the Channel 16 rules and the right way to do a radio check.

1 h All engines Shop: $150-500
Hull & systemsEasy

Shallow-Water Anchor Care: Power-Pole, Minn Kota Talon and Raptor Maintenance and Troubleshooting

Keep a shallow-water anchor deploying and holding: rinse it the way its maker recommends, inspect the spike and pivot bolts, check hydraulic fluid on pump models, keep the fuse, wiring and pump dry, update the software, know how to stow it by hand and get it ready for winter. Internal pump, circuit board and cylinder repairs go to an authorized service center.

45 min All engines Shop: $100-350

Safety: BoatMend is for information only and does not replace a certified marine technician. You are responsible for your safety and your boat. Read the full disclaimer.