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Marine Fresh Water Tank

yatch on the sea

Marine Fresh Water Tank

Holding Tank for Boats

Marine fresh water tanks are essential for storing fresh water, graywater, and wash water on boats and marine vessels. Our holding tanks for boats crafted from high quality, FDA-approved polyethylene plastic resins, are a great choice for your marine boat tanks, storage tanks, RV tanks, graywater tanks, and more. Our tanks are completely enclosed with 3/8" wall thickness to ensure superior durability and longevity. These marine fresh water tanks are created with a one-piece roto-mold process so they are completely enclosed, preventing water contamination and leakage.



Our marine holding tanks comply with not only FDA regulation CFR 177.1520, but also with Coast Guard Standards. We offer customizable tank dimensions to fit your specific needs and spin-welded fittings to make sure your tank connects perfectly. Call to find out how we can help you get the exact tank fit your need. Go to One Clarion’s marine fresh water tank (PDF) to learn more.


Our friendly staff is here to help you get the exact product you need!


Call us now! 1-863-261-8388
or Contact us for additional information.

Marine Water Tanks

Marine water tanks are designed to store potable water in boats and vessels equipped with plumbing such as yachts, sailboats, or deep sea fishing boats. Our tanks are made with FDA-approved, virgin polyethylene plastic resins. The one-piece marine holding tank design ensures tank longevity and durability. Our roto-mold, seamless tanks do not crack or weaken with time, making them cost effective and eco-friendly. Marine water tanks are available in a bow, rectangle or wedge shaped design with a wide selection of sizes and capacities.


Our tanks are a blank canvas, allowing us to customize tanks to your exact specifications. Rotate your tank any way you need to fit your unique requirements. All of our tanks have female NPT openings in the same position on one end, so they are suitable for all marine plumbing needs. You can easily drain water from all of our tanks, preventing damage from freezing temperatures during the off-season. We offer custom marine fresh water tanks and spin-welded fittings for the unique size and fit of the tank you need. Choose One Clarion for the highest quality marine tanks on the market!


Bow Shaped Water Tanks

Bow Shaped Water Tank
Part No. Capacity Length Width Depth Drawings
W-367 8 19.5 13.5 7.5 drawing (pdf)
W-370 12 24 15 10 drawing (pdf)
W-415 13 22 19.5 14.75 drawing (pdf)
W-366 15 36 13.5 7.5 drawing (pdf)
W-361 16 15 25.25 13 drawing (pdf)
W-446 18 41 25.5 16 ask for details
W-428 20 23 16.5 15.5 ask for details
W-449 20 34.5 21.1875 11.75 ask for details
W-413 21 34 15 10.75 drawing (pdf)
W-414 22 24 21.25 15.25 drawing (pdf)
W-460 23 21.5 34.5 12 ask for details
W-365 25 59 13.5 7.5 drawing (pdf)
W-421 30 31 18 16 drawing (pdf)
W-363 34 31 30 12 drawing (pdf)
W-412 35 34 29.5 9 drawing (pdf)
W-363 35 66 15.5 9.75 drawing (pdf)
W-359 56 90 17.5 12 drawing (pdf)
W-360 56 90 17.5 12 drawing (pdf)

Rectangle Shaped Water Tanks

Rectangle Shaped Water Tank

Part No.

Capacity

Length

Width

Depth

Drawings
W-364 2 gallons 9.75 9.75 6 drawing (pdf)
W-49 3 gallons 16 7.5 6.5 drawing (pdf)
W-77 5 gallons 15.5 15.5 5 drawing (pdf)
W-369 6 gallons 16 12 8 ask for details
W-354 6 gallons 17 12 8 drawing (pdf)
W-26 8 gallons 19.25 13 9.5 drawing (pdf)
W-306 8 gallons 36 16 4 ask for details
W-376 8 gallons 54 6 7 ask for details
W-245 9 gallons 17.625 15.625 8.25 ask for details
L-1 10 gallons 18 16 8 drawing (pdf)
W-53 10 gallons 24 14.5 7.5 drawing (pdf)
W-210 10 gallons 24 15.5 8 drawing (pdf)
W-33 10 gallons 31 15.5 6 drawing (pdf)
W-294 10 gallons 40 25 9.25 drawing (pdf)
L-2 12 gallons 24 16 8 drawing (pdf)
W-28 13 gallons 30 14 8.25 drawing (pdf)
W-355 15 gallons 17.75 14.75 14.75 drawing (pdf)
W-27 15 gallons 22.25 13 13 drawing (pdf)
W-327 15 gallons 23 16 11 drawing (pdf)
L-3 15 gallons 30 16 8 drawing (pdf)
W-97 15 gallons 33 21.5 5.75 ask for details
W-328 15 gallons 48.5 10.75 7.875 drawing (pdf)
W-282 16 gallons 30.125 17.25 8 drawing (pdf)
W-209 19 gallons 36 15.5 8 drawing (pdf)
W-51 20 gallons 21 17 14 drawing (pdf)
W-80 20 gallons 24 17.75 12 drawing (pdf)
W-368 20 gallons 24.5 15.5 13.5 drawing (pdf)
W-95 20 gallons 30 18 9 drawing (pdf)
W-81 20 gallons 33.25 17.25 8.75 drawing (pdf)
L-4 20 gallons 36 16 8 drawing (pdf)
W-320 21 gallons 21 21 12.5 drawing (pdf)
W-371 21 gallons 29 20 9 drawing (pdf)
W-268 22 gallons 35 14 12 ask for details
W-304 25 gallons 25 21 12 drawing (pdf)
W-45 25 gallons 27 20 12 drawing (pdf)
W-85 25 gallons 34 17.5 11 drawing (pdf)
W-20 25 gallons 42 16 10 ask for details
L-5 25 gallons 48 16 8 drawing (pdf)
W-201 25 gallons 52.5 12 10.75 drawing (pdf)
W-31 27 gallons 21 18 18 drawing (pdf)
W-2 27 gallons 35 15 13 drawing (pdf)
W-335 27 gallons 42.5 17.5 9 drawing (pdf)
W-285 27 gallons 44 17 9 drawing (pdf)
W-225 28 gallons 34.25 17.5 12 ask for details
W-207 28 gallons 35.25 15 13 drawing (pdf)
W-55 28 gallons 52 12 11 drawing (pdf)
W-323 29 gallons 25 24 12 drawing (pdf)
W-244 30 gallons 29.75 25.75 9.5 drawing (pdf)
W-30 30 gallons 32 20 12 drawing (pdf)
W-254 30 gallons 33 20 11 drawing (pdf)
W-292 30 gallons 34.5 18 12 drawing (pdf)
W-233 30 gallons 35.5 19 10.75 drawing (pdf)
W-32 30 gallons 42 28 6.5 drawing (pdf)
W-280 30 gallons 44 14 12 drawing (pdf)
W-338 30 gallons 45.5 22 7.75 drawing (pdf)
W-236 32 gallons 50.5 20 8 ask for details)
W-373 32 gallons 64 24 5.25 drawing (pdf)
W-237 33 gallons 30 16 16 drawing (pdf)
W-332 33 gallons 42 21.5 9 drawing (pdf)
W-234 34 gallons 48 21 8 drawing (pdf)
W-22 35 gallons 31.5 19.5 14.75 drawing (pdf)
W-316 35 gallons 33 28 9 ask for details
W-202 35 gallons 37 20 12 drawing (pdf)
W-75 35 gallons 69 11 11 drawing (pdf)
W-324 38 gallons 41.5 17.75 12.5 ask for details
W-266 38 gallons 47 17 12.125 ask for details
W-3 38 gallons 48.5 14 13 drawing (pdf)
W-205 38 gallons 58.5 16.125 10 drawing (pdf)
W-227 38 gallons 71.5 13 10 drawing (pdf)
W-259 39 gallons 28.375 18 17.5 drawing (pdf)
W-257 39 gallons 55 28 6.25 drawing (pdf)
W-248 40 gallons 31 26 11.75 drawing (pdf)
W-291 40 gallons 31.75 28 11.25 drawing (pdf)
W-307 40 gallons 33 22.5 13.5 ask for details
W-293 40 gallons 34 16 17 drawing (pdf)
W-313 40 gallons 38 25 11 ask for details
W-17 40 gallons 41 15.25 15.5 ask for details
W-284 40 gallons 41 21 11 drawing (pdf)
W-296 40 gallons 41 21 11 drawing (pdf)
W-204 40 gallons 42.25 27 9.5 drawing (pdf)
W-96 40 gallons 54 20 9 ask for details
W-295 40 gallons 54 23.5 8 drawing (pdf)
W-1 40 gallons 58 14 12 drawing (pdf)
W-226 40 gallons 58 21 8 ask for details
W-270 40 gallons 60 18 9.375 drawing (pdf)
W-314 40 gallons 60 18 9.375 ask for details
W-231 41 gallons 50 19 10 drawing (pdf)
W-48 41 gallons 60 28 6 drawing (pdf)
W-380 43 gallons 99 13.75 7.5 ask for details
W-250 44 gallons 38 17 16 drawing (pdf)
W-38 44 gallons 42 26.5 9.5 ask for details
W-309 44 gallons 60 31 5.75 ask for details
W-24 45 gallons 40 19 16 drawing (pdf)
W-35 45 gallons 42 20 13 ask for details
W-25 45 gallons 48 28 8 drawing (pdf)
W-264 45 gallons 64 24 7.5 drawing (pdf)
W-79 47 gallons 48 19.75 12 drawing (pdf)
W-279 48 gallons 72 20 8 drawing (pdf)
W-249 50 gallons 26 21.5 21 drawing (pdf)
W-275 50 gallons 45 26 10 ask for details
W-289 50 gallons 48 18 14.5 drawing (pdf)
W-318 50 gallons 51 28 8.375 ask for details
W-330 50 gallons 54.75 27 8 drawing (pdf)
W-208 50 gallons 57 36 6 drawing (pdf)
W-228 50 gallons 64 32 6 drawing (pdf)
W-271 50 gallons 68 13.5 13.5 drawing (pdf)
W-212 52 gallons 58 24 9 drawing (pdf)
W-12 53 gallons 30.25 24.5 17.25 ask for details
W-305 54 gallons 55 28 8.375 drawing (pdf)
W-403 55 gallons 45 23 12.75 ask for details
W-302 55 gallons 51 21 13 drawing (pdf)
W-4 55 gallons 60 20.5 11 drawing (pdf)
W-76 57 gallons 48 24 12 drawing (pdf)
W-300 60 gallons 48 21.5 14.5 drawing (pdf)
W-74 60 gallons 50 18 16 drawing (pdf)
W-276 60 gallons 53.5 21 13 drawing (pdf)
W-277 60 gallons 57 28 9 drawing (pdf)
W-37 60 gallons 70 26 8 ask for details
W-59 60 gallons 79.25 15.75 11.5 drawing (pdf)
W-331 62 gallons 50 32 9 drawing (pdf)
W-223 65 gallons 34 24 18.5 ask for details
W-362 65 gallons 39.75 23.75 16.25 drawing (pdf)
W-241 65 gallons 60 22 11.5 drawing (pdf)
W-220 68 gallons 42.5 39 9.5 drawing (pdf)
W-84 68 gallons 48.5 26 13 drawing (pdf)
W-213 72 gallons 34.5 23 21.5 drawing (pdf)
W-34 74 gallons 65 20.75 13 drawing (pdf)
W-251 80 gallons 59 49.5 7 drawing (pdf)
W-315 93 gallons 71 27 11.5 ask for details
W-218 95 gallons 41 25.25 22 drawing (pdf)
W-230 97 gallons 67 48 7 drawing (pdf)
W-214 98 gallons 52 26 17 drawing (pdf)
W-221 100 gallons 36 27.5 23.5 drawing (pdf)
W-101 100 gallons 50 40 12 drawing (pdf)
W-68 103 gallons 59.25 23.625 17.75 ask for details
W-63 105 gallons 46.5 33 16 drawing (pdf)
W-88 105 gallons 48 24 21.5 drawing (pdf)
W-60 105 gallons 79.25 27 11.5 drawing (pdf)
W-310 105 gallons 92 27.5 10 ask for details
W-308 107 gallons 94 27 9.75 ask for details
W-238 128 gallons 64.5 40 11.5 drawing (pdf)
W-347 132 gallons 65 38 12.5 drawing (pdf)
W-239 140 gallons 64.5 43.5 11.5 drawing (pdf)
W-272 142 gallons 60 43 13.75 drawing (pdf)
W-108 145 gallons 50 31.25 22 drawing (pdf)
W-69 145 gallons 69.75 44 11 ask for details
W-56 160 gallons 64.75 43 13.75 drawing (pdf)
W-345 163 gallons 65 30.5 19.25 drawing (pdf)
W-372 188 gallons 62 40 17.5 drawing (pdf)

Wedge Shaped Water Tanks

Wedge Shaped Water Tank

Part No.

Capacity

Length

Width

Depth

Drawings
W-358 8 gallons 19.75 17.75 8 drawing (pdf)
W-375 17 gallons 24.5 22 9 drawing (pdf)
W-274 65 gallons 69 24.25 10.75 ask for details
W-273 70 gallons 73.75 24.25 10.75 ask for details
W-211 72 gallons 61.75 24 13 drawing (pdf)
W-281 81 gallons 70 26.75 11.75 drawing (pdf)
W-349 82 gallons 48 40.5 11 ask for details
W-224 88 gallons 73.75 24.25 12.75 ask for details
W-353 93 gallons 59 36.5 11.375 drawing (pdf)
W-303 97 gallons 73 24.75 14 drawing (pdf)
W-215 100 gallons 78 26 14 drawing (pdf)
W-99 105 gallons 60 40.5 11.25 ask for details
W-374 107 gallons 76 38.5 10.125 ask for details
W-350 108 gallons 76 40 10 ask for details
W-378 110 gallons 57 32 16 ask for details
W-93 150 gallons 67.5 40.5 14.25 drawing (pdf)


How We Make Your Marine Tank

Our versatile marine tanks are a blank canvas, so we can customize tanks to your exact specifications. Our tanks have no pre-drilled holes, giving us the flexibility to place holes and fittings where you need them, so you can rotate to fit your available space.


Custom Tank fitting selection
  1. 1.- To start, simply fill out a tank drawing select with your specifications. Show on your drawing where you need the ports on your tank.  Be as precise as you can with measurements showing location.
  2. 2.- Our team will review the drawing and get back to you with feedback and suggestions.  
  3. 3.- We'll work with you until you're satisfied with the design, and then we'll process your order.
  4. 4.- While we encourage you to provide specific information on fitting sizes and locations, don't worry if you're not sure about all the details. Our team is ready to guide you through the process and make any changes you need.

*Keep in mind, mounting straps are not included with this tank, and it is not meant for gasoline fuel storage. If you need a tank that is not available in our standard selection, our team can help you find the custom tank to fit your specific needs.


Why Roto Mold for Marine Holding Tanks?

Our marine holding tank is made using a roto molding process that melts the virgin polyethylene resin inside a hollow, closed mold. The cast is heated to 260°C – 370°C, allowing the resin to evenly coat the mold. This unique plastic tank fabrication creates a one-piece, watertight tank that is perfect for marine fresh water or graywater tanks. The walls have an even thickness making them more durable and preventing water contamination.


Infographic showing how the the marine tanks are rotomolded

 


Marine Water Tank Accessories

One Clarion is proud to be an industry leader by making sure we meet your needs. We offer customizable tank dimensions to fit your specifications, and install spin weld fittings upon request. If your project requires a unique size or shape, we can even create a custom tool to accommodate your needs.

Our polyethylene fittings for our holding tanks and fresh water tanks are made through spin welding. This simple process produces a strong, durable permanent joint link and a great finish. We can make fittings for your tanks, ensuring a correct fit and are watertight. Custom polyethylene fittings for holding tanks
We also offer a variety of compartments, including rounded corner open ended, square corner open ended, and square corner top and end compartments in a variety of sizes.
See: List of Boat Storage Containers		 Custom Compartment
We have several battery boxes available to keep your marine battery from tipping or accidentally shorting out, as well as protecting it from corroding.
See: Battery boxes sizes		 Marine Battery Box

 


Sustainable Custom Plastic Storage

Eco Friendly LogoOur custom plastic marine tank gives a sustainable solution for environmental friendly water storage. Manufactured with non-toxic material, tanks have a low carbon emission during their life cycle. Our tanks can withstand corrosion, are leak proof, resist UV damage, and last longer than other tanks. Reduce your carbon footprint with our flexible, cost-effective plastic marine tanks.

Call us today to learn more about our custom roto-molding solutions.


For more information about Marine Fresh Water Tanks, call today to talk with one of our tank specialist or contact us. We can also provide other marine tanks including blackwater and gas tanks. Let us help you find the right custom tank to meet your marine water storage needs.


Looking for other water storage choices? See our Custom Tanks Tank flyer to learn about your options!



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