Marine Cleat

What Are Marine Cleats and Why Do They Matter?

Boat cleats are fittings on boats or docks used to secure ropes or lines, typically for docking or mooring. Though they may look simple, these small pieces of hardware play an outsized role in every boater's safety routine. Boat cleats serve as the anchoring point on your boat or dock, allowing you to secure lines for a variety of purposes including mooring, anchoring, or towing. Without a reliable cleat, even a calm day at the marina can turn into a costly situation.

Boat cleats are mounted directly on the deck of a boat and are used to secure dock lines, anchor lines, and fender lines. Dock cleats are installed on docks or piers and are typically larger and built to handle heavier loads from moored vessels. Understanding the difference helps you choose the right hardware for every application — whether you're outfitting your vessel's deck or building out a private dock.

Types of Marine Cleats

There are several types of cleats, including cam cleats, horn cleats, pop-up cleats, and flip-up cleats. Each style has its strengths depending on your boat's size, layout, and intended use.

• Horn Cleats: The horn cleat is the most common type of docking cleat. It comes in several different materials and is heavy-duty (except for nylon versions). Horn cleats are also the most affordable of all the docking cleats.
• Pop-Up / Flip-Up Cleats: Folding and pop-up cleats are popular because they reduce tripping hazards and maintain a clean deck appearance. These styles sit flush with the deck when not in use while still providing reliable tie-down points when docking or mooring.
• Cam Cleats: Cam cleats use spring-loaded clamps to grip the line and secure lines more securely without the need for tying knots. These are more commonly used on sailboats but can be helpful for other small vessels where quick adjustments to the line are necessary.

Choosing the Right Cleat: Key Considerations

Selecting the right marine cleat involves more than just picking a style. Material, size, and installation method all play important roles.

• Material: Cleats are usually made of stainless steel, galvanized metal, or nylon, so they can withstand the elements and last a long time. For freshwater, choose galvanized dock cleats, but for saltwater, choose stainless steel dock cleats.
• Size: Cleat sizing depends on dock line diameter and expected loads, but a common guideline is: 20 ft boats often use 6" cleats, 24 ft boats commonly use 8" cleats, and 30 ft boats frequently use 10" cleats.
• Installation: Boat cleats are typically installed using through-bolts with backing plates or large washers to distribute the load across the deck. Dock cleats should be installed using marine-grade bolts or lag screws, anchored securely through the decking and into a structural support or backing plate.
• Quantity: At a minimum, you should have two dock cleats per smaller boat — one for the stern line and one for the bow line. For larger boats, you should have at least three dock cleats per boat you plan to dock.

Top Brands in Marine Cleats

When it comes to marine cleats, quality and corrosion resistance aren't optional — they're essential. Sea-Dog Line is one of the most trusted names in the category. With more than a century of boating-industry experience, Sea-Dog designs durable gear for recreational and commercial boaters. Sea-Dog Line offers a full line of marine hardware and accessories in stainless steel, brass, bronze, chrome plate, galvanized, and injection molded plastic — giving boaters the right material for any environment, fresh or salt water alike.