What are Marine Tanks?

When you’re out on the water, access to clean and reliable water storage is essential. Marine tanks are built to safely store potable water on boats, yachts, and other vessels with plumbing systems. At Go To Tanks, our marine water tanks are made from durable, food-grade polyethylene and engineered to perform in tight or mobile spaces. Whether you’re a lifelong sailor, a commercial operator, or someone outfitting a waterfront retreat, marine tanks deliver dependable liquid storage wherever you need it.

What Are Marine Tanks, and How Do They Work?

Marine tanks are containers made to store water safely on boats and other watercraft. Their primary role is to hold fresh, potable water aboard boats and other watercraft, where reliability and safety are crucial.

Made in the USA from food-grade polyethylene, Go To Tanks’ marine tanks are tough, lightweight, and built to last. Since these tanks spend their lifetimes on boats, their material is built with UV-inhibitors to protect the color and material from leeching. Our catalogue of marine tanks range from 5 gallons to 375 gallons to allow flexibility when choosing a tank.

Our marine tanks are also NSF-approved for potable water storage and built with a thick 3/8 inch wall for extra strength compared to your typical RV tanks.

For example, our 50 Gallon marine tank includes up to three spin-welded FNPT fittings that can be customized to fit your plumbing layout. The result is a long-lasting, secure storage solution tailored to your vessel’s unique needs.

Marine tanks are loved as they can be easily customized to the user’s specifications, making them adaptable for a wide variety of plumbing setups. These tanks are designed so that their dimensions and orientation can be rotated to accommodate different installation requirements and plumbing pipe sizes. With certified materials, adjustable fittings, and flexible design, these tanks provide a reliable storage solution for any boat owner.

Marine Tank Uses: Boats, RVs, Off-Grid, and More

Despite the name, marine tanks aren’t limited to boats. Their compact, rugged design makes them versatile for a wide range of uses beyond the dock:

• RVs and campers: the 20 gallon marine tank fits easily under sinks or in cupboards to provide fresh water storage for extended travel. 
• Off-grid living: the refillable 50 gallon marine tank provides safe storage for households relying on delivered or collected potable water. 
• Emergency preparedness: the 100 gallon marine tank  provides both water reserve and peace of mind. 
• Industrial or commercial use: the affordable 300 gallon marine tank offers portable, durable storage in spaces with limited access or specialized requirements. 

For any questions regarding our recommendations or interest in marine tank versatility, please contact us and reference this article for the best assistance.

Choosing the Right Marine Tank: Size, Fittings, and Material

Selecting the correct marine tank depends on a clear understanding of your storage requirements and installation environment. Key considerations include:

• Capacity: Determine how much potable water you need to store, based on crew size, trip length, or intended application. Go-To Tanks offers marine tanks as small as 5 gallons and as big as 375 gallons.
• Tank orientation and dimensions: Evaluate the available installation space and any limitations such as boat size, pipe dimensions, and overall adaptability. Go To Tanks’ marine tanks can be rotated and configured to fit into tight or irregular spaces.
• Fittings: Choose the number, size, and placement of fittings required for your plumbing layout. With most tanks offering up to three spin-welded FNPT fittings to be included, Go To Tanks allows you to specify locations to match your system.
• Material and construction: Every marine tank is manufactured from food-grade, UV-stabilized polyethylene, which offers superior resistance to environmental degradation compared to inferior materials.
• Compliance: Verify that the tank meets potable water safety standards. Go To Tanks’ tanks are NSF-approved, ensuring safe use for drinking water applications.

Thinking about these points will help you pick a tank that’s safe and built to last.

Signs that Your Marine Tank Needs To Be Replaced

Like any storage equipment, marine tanks have a finite lifespan. Recognizing when replacement is necessary helps avoid contamination, leaks, or system failure. Keep an eye out for the following indicators that it may be time for a replacement: 

• Visible cracks, bulges, or leaks in the tank walls.
• Discoloration or brittleness of the polyethylene, often caused by UV exposure or age.
• Persistent odors or taste issues, suggesting bacterial buildup or compromised material.
• Loose or failing fittings that no longer provide a watertight seal.
• Reduced structural integrity, where the tank no longer holds its shape under pressure or weight.

Often enough, a thorough cleaning is enough to keep your tank looking and performing like new. For tips and advice, learn more on how to properly clean your plastic marine storage tank with our guide here. 

However, if the listed conditions appear or problems arise that cannot be fixed with a good scrubbing, replacement ensures that water remains clean and that the system operates reliably. Go-To Tanks offers a one year warranty to ensure that you are satisfied and happy with your chosen marine tank.

Go with Go-To Tanks

Ready to upgrade your water storage? Explore our full range of marine tanks and find the perfect solution for your boat, RV, or off-grid setup.

Marine tanks are durable, versatile storage solutions designed to meet the needs of both marine and non-marine environments. With features such as food-grade polyethylene construction, customizable fittings, and flexible installation options, Go To Tanks’ marine tanks stand out as a safe and adaptable choice. 

Whether for boats, RVs, off-grid living, or emergency preparedness, choosing Go To Tanks ensures access to high-quality tanks built to last.