As a former captain, I took pride in keeping the vessels I operated in top condition. One of the most highly visible areas of a vessel is the hull. Unfortunately, the hull is prone to showing signs of wear and tear because it is constantly making contact with docks and other fixed objects. For this reason, it is imperative to know how to prevent hull scratches and damage. Save yourself time and money by avoiding boat hull damage. 

Use Fenders When Leaving And Returning To The Dock

One of the best ways to avoid scratches and knicks in boat hulls is to utilize fenders. Fenders prevent the hull from making direct contact with the dock. 

I have seen countless boats with deep scratches from bow to stern along the hull. Not only is the boat unsightly, but it will not hold the same value. 

Sitting Dockside

With that said, I recommend placing clean fenders along the side of the hull when it is sitting dockside. The effects of wind, wakes, and currents can cause the boat to rub against the dock. 

Departing The Dock 

Secondly, leave the fenders in place while pulling out of a slip or dock. In the event that you’re pinned against the dock, it will not be the hull making direct contact with the dock. After you have cleared the slip, remove the fenders and stow. 

Returning To The Dock

Lastly, docking up at the end of the trip, position the fenders so that they are the correct height based on the dock. In the situation where you come in hot or strike the dock accidentally, the fenders will act as a cushion. 

Apply Wax To The Surface Of The Hull

Similar to a car, applying wax to the surface helps reduce the chances of fine scratches. Unfortunately, the slightest bit of abrasion can cause small but visible scratches. 

Common Causes Of Fine Hull Scratches

There are a multitude of ways that boat hulls become scratched. Here is a breakdown of the most common causes so you can better help prevent hull scratching.

• Failing to clean the hull before applying wax
• Using the wrong type of brush on painted and gel-coated surfaces
• Striking the hull with fishing hooks and rods
• Salt becomes embedded in the finish of the hull 
• Failing to apply wax at any point
• Coming in contact with floating objects while underway
• Brushing up against the hull with jewelry, including rings, watches, and necklaces

How Wax Reduces Hull Scratching 

One of the biggest benefits of applying wax is its ability to reduce scratching and the formation of oxidation. 

Wax, when applied, creates a hard protective layer over the surface of the hull. The hard surface is a shield to help reduce and prevent hairline scratches. However, never assume that it will shield against a hard blow when docking or a sharp object brushing the hull. 

Importantly, wax does not last a lifetime; it must be reapplied on a routine basis. 

Reapply Wax On A Consistent Basis

In order to keep your hull protected, it is imperative to apply wax routinely. As a captain, I applied a fresh layer of wax every three months, even if the boat was rarely used during the three-month time span. 

Remember, you need to wash the hull with soap and water before adding a coating of fresh wax. This is especially important if you’re operating in saltwater. The salt, when dried, forms hard crystals. Salt crystals are sharp objects and will absolutely scratch the hull when applying wax with a buffing wheel or clean rag. 

In addition to cleaning the hull, remember to make sure the boat hull is completely dried. A wet hull will not absorb the wax compared to a dry hull. Additionally, it is never a bad idea to apply two coats for an extra layer of protection. 

Install Marine Edging

If you’re an avid boater who keeps the vessel in the water at the dock, marine edging is highly beneficial. 

It is important to know the functionality of marine edging. Marine edging permanently affixes to docks and is constructed with a soft fender. 

The marine edging extends along the length of the dock to prevent the hull from making contact with the sharp and jagged edge of the dock. Without question, they are similar to boat fenders but are instead permanently in place. However, I do recommend combining both to reduce the likelihood of scratching. 

Prevent Scratches On Your Boat Hull

No doubt about it, you can reduce boat scratches by using fenders, applying wax, and installing marine edging. Protect your valuable investment to ensure it stays in top condition at all times. As a captain, I was frustrated to see small scratches despite working hard to avoid them because, unfortunately, they will still happen. However, doing something is better than nothing.