Can I store my boat on its side, and if so, how?

Storing a boat on its side is a question many owners face, often when dealing with limited space in a garage, shed, or driveway. The short answer is that it is possible for certain types of boats, but it requires careful planning and execution to prevent serious damage. Industry findings and manufacturer guidelines consistently show that improper side storage is a leading cause of hull distortion, gel coat cracking, and internal component failure.

When Side Storage Might Be Feasible

Not all boats are candidates for this method. Generally, small, lightweight vessels with robust construction are the most suitable.

• Small Dinghies, Prams, and Sailboats: Simple, car-topper-style boats under 14 feet, especially those with hard chines (angular hull shapes), can often be stored on their side.
• Some Personal Watercraft (PWCs): Many manufacturers design PWCs with side storage in mind, but you must consult your specific owner’s manual.
• Rigid Hull Inflatable Boats (RHIBs): Due to their inflatable tube construction, these can sometimes be deflated and stored on their side to save space.

Conversely, larger boats with deep-V hulls, cored hulls, or integrated swim platforms are at high risk for structural damage and should never be stored on their side without explicit manufacturer approval.

How to Properly Store a Boat on Its Side

If your boat is a candidate, following a meticulous process is non-negotiable for safety and preservation.

1. Preparation and Support

The goal is to support the hull along its strongest structural members to distribute weight evenly and prevent point loading.

1. Clean and Dry: Thoroughly clean the hull and interior. Ensure the bilge is completely dry to prevent mildew and corrosion.
2. Build a Cradle or Use Padded Bunks: Do not simply lean the boat against a wall. Construct a wooden cradle or use heavily padded bunks (like those on a trailer) that conform to the hull’s shape. The support must run along the stringers or keel line.
3. Protect the Gunwale: The side resting on the ground or support needs a wide, soft pad-such as thick marine carpet or foam-to protect the rail and hull.

2. Positioning and Securing

1. Choose the Correct Side: Store the boat with the gunwale down, not the keel. The deck should be facing outward. This position is generally more stable and places less stress on the hull.
2. Remove All Loose Items: Take out electronics, safety gear, and any other equipment that could shift or fall.
3. Secure the Boat: Use straps or ropes to secure the boat to wall studs or other solid anchors to prevent it from shifting or falling over. Ensure all hatches and compartments are securely closed.

3. Long-Term Considerations

• Winterization: If storing for winter, you must still complete full engine winterization (fogging, draining block, adding antifreeze) and stabilize the fuel, regardless of the boat's orientation.
• Cover It: Use a breathable, fitted cover to keep dust and pests out while allowing moisture to escape.
• Check Regularly: Periodically inspect the support points for settling, the cover for integrity, and the hull for any signs of stress or deformation.

Critical Risks and Why Caution is Paramount

Data from marine surveyors and insurance claims highlight the significant risks of improper side storage.

• Hull Deformation: The most common issue. Fiberglass can creep under constant, uneven pressure, leading to a permanent hook or warp in the hull that affects performance and value.
• Internal Damage: Fuel, oil, or water in tanks or the bilge can leak into areas not designed for it. Components like batteries, steering systems, and gauges may be adversely affected.
• Voiding Warranties: Most boat manufacturers' warranties explicitly exclude damage resulting from improper storage methods.

Insurance and Facility Considerations

Before choosing side storage, you must check two key things. First, review your boat insurance policy. Some insurers may deny a claim for damage that occurs during storage if the method violates the policy's stated requirements or is deemed negligent. Second, if you are using a commercial storage facility, you must get written approval from the management. Their rules and liability coverage almost certainly dictate specific storage orientations, and deviating from them could make you responsible for any resulting damage.

For most boat owners, the potential risks and complexities of side storage outweigh the space savings. Exploring professional options like dry stack storage, secure outdoor yards, or even dedicated trailer storage facilities often provides greater safety and peace of mind. Always prioritize the manufacturer's recommendations and consult with a marine professional if you are uncertain. The integrity of your vessel depends on it.