If you're reading this, then you probably already appreciate the satisfaction that comes with a lifestyle out on the water.  Boating is a fun recreation, and so many boats these days really SHINE.  There's so much chrome and stainless steel and aluminum on boats that can make them stand out at the dock or on the lake.  However, it's important to maintain these metal surfaces on your boat.  After all, no one wants to be driving the boat into the harbor that is covered in rust and oxidation.

What causes metal surfaces on my boat to corrode?

The marine environment can be a harsh one - especially when you're boating in saltwater.  There are several factors that can contribute to corrosion and oxidation of the metal surfaces on your boat.  That's why it is so important that your boat is constructed with durable metal alloys that can resist these corrosive agents, and also why it is so important that you are regularly cleaning and maintaining these surfaces.   Some factors that can contribute to corrosion of the metal on your boat include:

  1. Saltwater exposure - As you might have guessed, saltwater is highly corrosive to metals, and exposure to saltwater for extended periods can cause corrosion.
  2. Oxygen exposure - Even the air is harmful! The presence of oxygen can cause metals to oxidize and corrode over time.
  3. Electrolysis - When two different metals are in contact with each other in the presence of an electrolyte (such as saltwater), an electrical current can flow between them, causing corrosion.  Not to get too scientific, the metal with the lower electrochemical potential corrodes first.  That's why anodes are used as sacrificial metals to attract the electrical current and protect other metals with higher electrochemical potential.
  4. Acidic environments - Exposure to acidic substances such as battery acid or cleaning products can cause corrosion.  When selecting cleaners to use on your boat - especially on the metal surfaces - you should pay attention to whether they are formulated for use on boats and in the marine environment.
  5. Abrasion and scratches - While you may be inclined to shrug off light damage and scratches as "no big deal", physical damage to the metal surface can provide an entry point for water, salt, and other substances that can cause corrosion.  When these minor abrasions occur, the outer layer specifically treated with chemicals and composed to protect the metals underneath are often compromised.

What are the best ways to clean and maintain the metal surfaces on my boat?

Because these surfaces are especially susceptible to the harsh marine environment, and because rust and corrosion look really bad and can cause significant problems for the operation of your boat, we highly recommend that you are cleaning these surfaces after every time you use your boat.  Here are some of the most important tips for how to care for the metal surfaces on your boat:

  1. Rinse with freshwater - After each use, rinse the metal parts of your boat with freshwater. This will help remove any saltwater, dirt or debris that can cause corrosion.  Hopefully, you have a washdown pump onboard your vessel with a hose and sprayer to make this process easy.  It helps to use an marine-approved cleaning solution as well. We even suggest you use a toothbrush on small crevices to ensure you clean all surfaces thoroughly.  Corrosion often starts in the hard-to-clean nooks of windlasses and other mechanical components on your deck.
  2. Dry thoroughly - After rinsing, dry the metal parts thoroughly with a clean, dry cloth. Standing water can causing corrosion, so make sure to eliminate any drops left from the washdown.
  3. Apply protective coatings -  To further protect the metal, apply a protective coating such as a metal protector. This will help prevent corrosion and keep the metal looking shiny and new.
  4. Keep the boat covered - If possible, keep your boat covered when it is not in use. This will protect the metal from exposure to sunlight, rain and other elements that can cause corrosion.  Boat covers come in all shapes and sizes (and they are a real hassle to return!), so be sure to match up the correct size cover for your specific vessel.
  5. Check for damage - Regular inspection of your boat is a good rule of thumb not just for your metal surfaces but for all components of the boat.  Make sure to check the metal parts of your boat for signs of scratches, damage or corrosion. If you notice any issues, it is important that you address the problems as soon as possible.  Time is not on your side when you are dealing with corrosion.  It will only get worse, and could eventually lead to serious, irreparable damage.  Take care of these issues sooner rather than later.

Hopefully, these tips give you some help for how to keep the bling on your boat shining bright.  If you have additional questions about how to best maintain and care for your boat, just reach out to our ABYC-certified experts at (866)388-0390.