Marine Black Water Holding Tanks
Waste Holding Tanks
When it comes to Marine Black Water Tanks and replacement holding tanks, look no further than One Clarion. We offer the ultimate solution that combines competitive pricing, precise fittings, compliance with Coast Guard standards, and exceptional longevity. These top-quality marine tanks provide unmatched durability and reliability at a price that will impress you, and an unbeatable price.
Put your trust in One Clarion for marine tanks that deliver unparalleled strength, durability, and reliability. We are committed to providing you with a seamless and sanitary waste management solution for all your marine adventures.
Our friendly staff is here to help you get the exact product you need!
Marine Black Water Tank Specifications
Say goodbye to worries about contamination or leaks with these seamless, single-unit construction tanks. The meticulously engineered marine blackwater tanks are highly resistant to impact, ensuring long-lasting performance.
For a flawless installation, customize the holding tank to meet your specific needs. You have the flexibility to choose fitting locations, ensuring a perfect leak-free fit for your vessel. Take a look below for a comprehensive listing of customizable sizes, including detailed diagrams of each black water marine tank.
Marine Black Water Holding Tanks
Bottom Dump Waste Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
H-220 | 11 gallons | 64 | 6 | 8.25 | Drawing (pdf) |
H-263 | 11 gallons | 74 | 5.75 | 8.75 | Drawing (pdf) |
H-249 | 14 gallons | 31.5 | 17 | 8.75 | Drawing (pdf) |
H-229 | 15 gallons | 37 | 16 | 7.5 | Drawing (pdf) |
H-572 | 24 gallons | 73.75 | 11.5 | 9 | Drawing (pdf) |
H-510 | 25 gallons | 46 | 15 | 9.5 | Ask for details |
H-224 | 25 gallons | 75.75 | 8 | 13 | Drawing (pdf) |
H-223 | 27 gallons | 76 | 16 | 13 | Drawing (pdf) |
H-251 | 35 gallons | 52 | 24 | 8.5 | Drawing (pdf) |
H-286 | 35 gallons | 76 | 11 | 12.75 | Drawing (pdf) |
H-277 | 38 gallons | 28.25 | 23.25 | 14 | Drawing (pdf) |
H-280 | 40 gallons | 27.5 | 23.5 | 14 | Drawing (pdf) |
H-317 | 40 gallons | 79 | 11 | 13 | Drawing (pdf) |
H-312 | 40 gallons | 90 | 33.5 | 12 | Drawing (pdf) |
H-276 | 43 gallons | 84 | 11 | 13 | Drawing (pdf) |
H-418 | 43 gallons | 85 | 17.5 | 9.75 | Drawing (pdf) |
H-432 | 44 gallons | 65 | 15.25 | 12 | Drawing (pdf) |
H-354 | 44 gallons | 78 | 12.5 | 13 | Drawing (pdf) |
H-359 | 47 gallons | 68 | 27.25 | 7.5 | Drawing (pdf) |
H-311 | 48 gallons | 80 | 20 | 12 | Drawing (pdf) |
H-437 | 51 gallons | 85 | 17.5 | 11.25 | Drawing (pdf) |
H-226 | 52 gallons | 84 | 13.25 | 13 | Drawing (pdf) |
H-316 | 55 gallons | 79 | 15.5 | 13 | Drawing (pdf) |
H-281 | 59 gallons | 42 | 27.25 | 13 | Drawing (pdf) |
H-375 | 60 gallons | 79.75 | 16.25 | 13.25 | Drawing (pdf) |
H-275 | 62 gallons | 84 | 15.5 | 13 | Drawing (pdf) |
H-419 | 63 gallons | 85 | 24.75 | 9.75 | Drawing (pdf) |
H-287 | 65 gallons | 76 | 20 | 12.75 | Drawing (pdf) |
H-353 | 66 gallons | 78 | 18.5 | 13 | Drawing (pdf) |
H-304 | 66 gallons | 85 | 21 | 11.75 | Drawing (pdf) |
H-433 | 70 gallons | 65 | 22.75 | 12 | Drawing (pdf) |
H-227 | 72 gallons | 84.25 | 18 | 13 | Drawing (pdf) |
H-436 | 73 gallons | 85 | 24.75 | 11.25 | Drawing (pdf) |
H-362 | 90 gallons | 79.75 | 24 | 13.25 | Drawing (pdf) |
H-422 | 110 gallons | 63 | 24.75 | 17.75 | Ask for details |
Marine Black Water Holding Tanks
End Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawings |
H-545 | 6 gallons | 38.375 | 15 | 3.5 | Ask for details |
H-273 | 8 gallons | 15 | 17 | 8 | Drawing (pdf) |
H-135 | 8 gallons | 22.75 | 12.75 | 7.5 | Drawing (pdf) |
H-128 | 9 gallons | 32.5 | 15 | 6.5 | Drawing (pdf) |
H-256 | 9 gallons | 35 | 11.75 | 6 | Drawing (pdf) |
H-491 | 9 gallons | 82 | 6 | 6.75 | Ask for details |
H-565 | 9 gallons | 84.25 | 8 | 8.5 | Drawing (pdf) |
H-380 | 10 gallons | 43.5 | 15 | 5.75 | Drawing (pdf) |
H-384 | 10 gallons | 43.5 | 15 | 5.75 | Drawing (pdf) |
H-325 | 10 gallons | 61.5 | 8 | 8.5 | Drawing (pdf) |
H-493 | 10 gallons | 68 | 8 | 7.625 | Drawing (pdf) |
H-219S | 10 gallons | 70 | 5.5 | 15 | Drawing (pdf) |
H-219L | 12 gallons | 88 | 5.5 | 15 | Drawing (pdf) |
H-131 | 15 gallons | 58 | 14.25 | 6 | Drawing (pdf) |
H-379 | 16 gallons | 56 | 10 | 8.5 | Drawing (pdf) |
H-307 | 16 gallons | 65 | 20 | 4.5 | Drawing (pdf) |
H-253 | 17 gallons | 30 | 20 | 8 | Drawing (pdf) |
H-566 | 18 gallons | 30 | 19.875 | 8.75 | Drawing (pdf) |
H-244 | 19 gallons | 54 | 22 | 6.5 | Drawing (pdf) |
H-567 | 19 gallons | 76 | 16 | 5 | Drawing (pdf) |
H-96 | 20 gallons | 26 | 19.75 | 11 | Drawing (pdf) |
H-448 | 20 gallons | 42 | 29.5 | 5.25 | Drawing (pdf) |
H-502 | 20 gallons | 48 | 16 | 8 | Drawing (pdf) |
H-424 | 20 gallons | 61 | 14.75 | 6.5 | Drawing (pdf) |
H-551 | 21 gallons | 32 | 17 | 10.75 | Drawing (pdf) |
H-571 | 21 gallons | 61 | 11 | 9 | Drawing (pdf) |
H-454 | 21 gallons | 95 | 13.75 | 7.5 | Drawing (pdf) |
H-294 | 22 gallons | 40 | 20 | 8 | Drawing (pdf) |
H-272 | 23 gallons | 38 | 25.5 | 6.5 | Drawing (pdf) |
H-298 | 23 gallons | 43 | 10.5 | 13 | Drawing (pdf) |
H-447 | 23 gallons | 68 | 20 | 5.25 | Drawing (pdf) |
H-103 | 24 gallons | 76 | 11 | 8.5 | Drawing (pdf) |
H-521 | 24 gallons | 93.25 | 13.625 | 7.1875 | Ask for details |
H-278 | 25 gallons | 38 | 26 | 7.5 | Drawing (pdf) |
H-295 | 25 gallons | 42 | 20 | 8 | Drawing (pdf) |
H-453S | 25 gallons | 82 | 13 | 7.5 | Drawing (pdf) |
H-560 | 26 gallons | 73.75 | 12 | 9 | Drawing (pdf) |
H-444 | 26 gallons | 81.5 | 14.5 | 6.25 | Drawing (pdf) |
H-21 | 27 gallons | 44 | 13.25 | 12.5 | Drawing (pdf) |
H-356 | 27 gallons | 82 | 16 | 6 | Drawing (pdf) |
H-453L | 27 gallons | 94 | 13 | 7.5 | Drawing (pdf) |
H-558 | 28 gallons | 55 | 13.625 | 9.875 | Drawing (pdf) |
H-217 | 29 gallons | 74.25 | 21.25 | 6.5 | Drawing (pdf) |
H-270 | 30 gallons | 50.5 | 20 | 8 | Drawing (pdf) |
H-449 | 30 gallons | 54 | 43.75 | 5.75 | Drawing (pdf) |
H-476 | 30 gallons | 90 | 16 | 6 | Ask for details |
H-237 | 30 gallons | 98 | 16 | 6 | Drawing (pdf) |
H-562 | 31 gallons | 58 | 22 | 8 | Drawing (pdf) |
H-67 | 32 gallons | 36 | 36 | 7.25 | Drawing (pdf) |
H-531 | 32 gallons | 96 | 14.5 | 8 | Drawing (pdf) |
H-370 | 34 gallons | 104 | 10 | 9 | Drawing (pdf) |
H-420 | 35 gallons | 104 | 17.25 | 6 | Drawing (pdf) |
H-305 | 35 gallons | 47 | 26.5 | 9 | Drawing (pdf) |
H-215 | 36 gallons | 48 | 36 | 7 | Drawing (pdf) |
H-388 | 38 gallons | 54.75 | 21.5 | 9.25 | Drawing (pdf) |
H-218 | 38 gallons | 68.25 | 21.25 | 8 | Drawing (pdf) |
H-536 | 38 gallons | 90 | 16 | 8.5 | Drawing (pdf) |
H-498 | 42 gallons | 60 | 30 | 7.25 | Drawing (pdf) |
H-432 | 44 gallons | 65 | 15.25 | 12 | Drawing (pdf) |
H-570 | 47 gallons | 48 | 27 | 15 | Drawing (pdf) |
H-359 | 47 gallons | 68 | 27.25 | 7.5 | Drawing (pdf) |
H-515 | 48 gallons | 44 | 29 | 11 | Ask for details |
H-514 | 50 gallons | 38 | 35 | 11 | Drawing (pdf) |
H-361 | 50 gallons | 42 | 32 | 10.5 | Drawing (pdf) |
H-257 | 51 gallons | 30 | 26 | 16 | Drawing (pdf) |
H-284 | 55 gallons | 42 | 27.25 | 13 | Drawing (pdf) |
H-303 | 55 gallons | 51 | 27.25 | 14 | Drawing (pdf) |
H-85 | 55 gallons | 51.75 | 28 | 10 | Drawing (pdf) |
H-266 | 56 gallons | 60 | 29.5 | 13 | Drawing (pdf) |
H-484 | 56 gallons | 60 | 30 | 9 | Ask for details |
H-421 | 56 gallons | 65 | 20.25 | 17.75 | Drawing (pdf) |
H-365 | 60 gallons | 60.25 | 21 | 13 | Drawing (pdf) |
H-260 | 60 gallons | 65 | 26 | 13 | Drawing (pdf) |
H-143 | 60 gallons | 72 | 16 | 14.5 | Drawing (pdf) |
H-569 | 76 gallons | 48 | 15 | 27 | Drawing (pdf) |
H-265 | 77 gallons | 60 | 29.5 | 13 | Drawing (pdf) |
H-540 | 78 gallons | 50 | 50 | 8.625 | Drawing (pdf) |
H-259 | 82 gallons | 65 | 29.5 | 13 | Ask for details |
H-390 | 82 gallons | 80 | 15 | 19.5 | Drawing (pdf) |
H-144 | 93 gallons | 72.25 | 24 | 14.5 | Drawing (pdf) |
H-310 | 104 gallons | 57 | 28 | 20 | Drawing (pdf) |
H-165 | 110 gallons | 65 | 21 | 13 | Drawing (pdf) |
H-165M | 110 gallons | 65 | 21 | 21.5 | Drawing (pdf) |
H-166 | 115 gallons | 60.25 | 24 | 20 | Drawing (pdf) |
H-366 | 120 gallons | 65 | 24 | 20 | Drawing (pdf) |
H-331 | 123 gallons | 100 | 32 | 11 | Drawing (pdf) |
H-313 | 135 gallons | 83 | 37 | 19 | Drawing (pdf) |
H-360 | 170 gallons | 58 | 24 | 30 | Drawing (pdf) |
H-543 | 250 gallons | 72 | 48 | 19 | Drawing (pdf) |
Marine Black Water Holding Tanks
End Dump Holding Tanks with Rails

Part No. | Capacity | Length | Width | Depth | Drawings |
H-130 | 12 gallons | 18 | 17.75 | 14.25 | Drawing (pdf) |
H-79 | 15 gallons | 60 | 11.75 | 7.75 | Drawing (pdf) |
H-59 | 17 gallons | 71.25 | 14.75 | 6.5 | Drawing (pdf) |
H-28 | 20 gallons | 34 | 15 | 12 | Drawing (pdf) |
H-42 | 21 gallons | 36 | 21 | 7.5 | Drawing (pdf) |
H-201 | 22 gallons | 50.5 | 17.25 | 8.75 | Drawing (pdf) |
H-34 | 23 gallons | 33.75 | 20 | 9.5 | Drawing (pdf) |
H-47 | 24 gallons | 54.75 | 21 | 7.5 | Drawing (pdf) |
H-65 | 23 gallons | 30 | 21 | 11 | Drawing (pdf) |
H-330 | 25 gallons | 31 | 27 | 9.5 | Drawing (pdf) |
H-55 | 25 gallons | 51 | 23.75 | 9 | Drawing (pdf) |
H-355 | 25 gallons | 54 | 32 | 5.75 | Drawing (pdf) |
H-72 | 21 gallons | 59.25 | 16 | 8.5 | Drawing (pdf) |
H-205 | 27 gallons | 26.75 | 20 | 8.5 | Drawing (pdf) |
H-213 | 27 gallons | 55 | 23.75 | 7.75 | Drawing (pdf) |
H-3 | 27 gallons | 55 | 24 | 7 | Drawing (pdf) |
H-204 | 27 gallons | 57 | 20 | 9 | Drawing (pdf) |
H-57 | 25 gallons | 64 | 18 | 7.5 | Drawing (pdf) |
H-368 | 29 gallons | 48 | 38 | 5.5 | Drawing (pdf) |
H-64 | 30 gallons | 30 | 25 | 11 | Drawing (pdf) |
H-24 | 30 gallons | 35.75 | 24 | 10 | Drawing (pdf) |
H-339 | 30 gallons | 55 | 22 | 10 | Drawing (pdf) |
H-584 | 31 gallons | 54 | 22 | 8 | Drawing (pdf) |
H-463 | 31 gallons | 60 | 23 | 7.75 | Ask for details |
H-393 | 32 gallons | 43 | 23 | 10.25 | Drawing (pdf) |
H-206 | 32 gallons | 55 | 20.25 | 9.5 | Drawing (pdf) |
H-52 | 32 gallons | 67.5 | 20 | 7.75 | Drawing (pdf) |
H-464 | 34 gallons | 60 | 23 | 7.75 | Ask for details |
H-305 | 35 gallons | 47 | 26.5 | 9 | Drawing (pdf) |
H-512 | 34 gallons | 55 | 24 | 10.5 | Drawing (pdf) |
H-45 | 35 gallons | 49.25 | 27 | 8.5 | Drawing (pdf) |
H-51 | 35 gallons | 67.5 | 26 | 7.75 | Drawing (pdf) |
H-252 | 36 gallons | 45 | 22 | 10.5 | Drawing (pdf) |
H-6 | 37 gallons | 48.5 | 25 | 9 | Drawing (pdf) |
H-334 | 39 gallons | 54.75 | 27 | 8.75 | Drawing (pdf) |
H-14 | 39 gallons | 55 | 26.5 | 9 | Drawing (pdf) |
H-7 | 40 gallons | 54.5 | 26.5 | 9 | Drawing (pdf) |
H-308 | 40 gallons | 54.75 | 27 | 9 | Drawing (pdf) |
H-333 | 40 gallons | 55 | 32 | 10 | Drawing (pdf) |
H-501 | 40 gallons | 56 | 28.5 | 8.25 | Drawing (pdf) |
H-290 | 40 gallons | 56.5 | 24.5 | 8.75 | Ask for details |
H-364 | 40 gallons | 57 | 25 | 9.5 | Drawing (pdf) |
H-383 | 40 gallons | 57 | 42 | 7 | Drawing (pdf) |
H-513 | 40 gallons | 60 | 27 | 10 | Ask for details |
H-507 | 40 gallons | 84 | 27 | 6.5 | Drawing (pdf) |
H-225 | 44 gallons | 61 | 31.25 | 8.5 | Drawing (pdf) |
H-407 | 45 gallons | 58 | 25 | 8.75 | Drawing (pdf) |
H-371 | 50 gallons | 53 | 27 | 10 | Drawing (pdf) |
H-516 | 50 gallons | 69 | 29 | 8.25 | Ask for details |
H-363 | 55 gallons | 60 | 35 | 9.25 | Drawing (pdf) |
H-17 | 55 gallons | 70 | 27 | 8.75 | Ask for details |
Our friendly staff is here to help you get the exact product you need!
Marine Black Water Holding Tanks
L-Shaped End Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawing |
H-235 | 9 gallons | 28 | 17.5 | 6 | Drawing (pdf) |
H-232 | 10 gallons | 30 | 16 | 6.25 | Drawing (pdf) |
H-435 | 13 gallons | 30 | 20 | 8 | Drawing (pdf) |
H-236 | 15 gallons | 72.5 | 15 | 6 | Drawing (pdf) |
H-234 | 18 gallons | 28 | 27 | 6.5 | Drawing (pdf) |
H-238 | 19 gallons | 71.5 | 18 | 5 | Drawing (pdf) |
H-522 | 19 gallons | 97.4375 | 16.375 | 7.625 | Drawing (pdf) |
H-520 | 20 gallons | 103.4375 | 16.375 | 7.625 | Drawing (pdf) |
H-568 | 20 gallons | 44 | 41.5 | 6 | Drawing (pdf) |
H-236D | 20 gallons | 72.5 | 15 | 7.5 | Ask for details |
H-398 | 22 gallons | 38.25 | 44 | 7.75 | Drawing (pdf) |
H-537 | 23 gallons | 47.75 | 23.25 | 10.5 | Drawing (pdf) |
H-40 | 24 gallons | 36 | 20 | 12.75 | Drawing (pdf) |
H-367 | 25 gallons | 42 | 44 | 7.75 | Drawing (pdf) |
H-509 | 25 gallons | 42.5625 | 25.0625 | 7.25 | Ask for details |
H-238D | 25 gallons | 71.5 | 18 | 6.5 | Ask for details |
H-460 | 26 gallons | 37 | 30.5 | 7.5 | Ask for details |
H-549 | 26 gallons | 54.5 | 19 | 13.375 | Ask for details |
H-538 | 31 gallons | 103 | 34 | 8.5 | Drawing (pdf) |
H-348S | 32 gallons | 57 | 44 | 8 | Drawing (pdf) |
H-369 | 34 gallons | 80 | 33 | 9.5 | Drawing (pdf) |
H-539 | 37 gallons | 104 | 28.5 | 10.5 | Drawing (pdf) |
H-534 | 39 gallons | 104 | 18.5 | 6.25 | Drawing (pdf) |
H-417 | 40 gallons | 57 | 58 | 8 | Drawing (pdf) |
H-535 | 41 gallons | 104 | 18.5 | 6.25 | Drawing (pdf) |
H-345 | 41 gallons | 80 | 36 | 6.75 | Drawing (pdf) |
H-533 | 43 gallons | 53 | 36.25 | 10.5 | Drawing (pdf) |
H-84 | 50 gallons | 60 | 27 | 11.5 | Ask for details |
H-314 | 71 gallons | 77 | 34.75 | 9.75 | Drawing (pdf) |
H-458 | 74 gallons | 57.5 | 19.25 | 20 | Drawing (pdf) |
H-459 | 103 gallons | 57.5 | 26.5 | 20 | Ask for details |
Marine Black Water Holding Tanks
L-Shaped Side Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawing |
H-302 | 13 gallons | 65.75 | 22.75 | 6 | Drawing (pdf) |
H-301 | 16 gallons | 73.5 | 34.25 | 6 | Drawing (pdf) |
H-429 | 20 gallons | 80 | 40.5 | 6 | Drawing (pdf) |
H-285 | 24 gallons | 50 | 22 | 8.75 | Drawing (pdf) |
H-475 | 26 gallons | 44 | 38.25 | 8 | Ask for details |
H-233 | 35 gallons | 74 | 33.5 | 6 | Drawing (pdf) |
H-109 | 40 gallons | 76 | 27 | 10 | Drawing (pdf) |
H-425 | 45 gallons | 93 | 30 | 8.5 | Drawing (pdf) |
Marine Black Water Holding Tanks
Recessed End Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawing |
H-326 | 9 gallons | 31.5 | 15.5 | 8 | Drawing (pdf) |
H-27 | 10 gallons | 31.25 | 6.5 | 8.5 | Drawing (pdf) |
H-327 | 10 gallons | 46 | 16.5 | 8.5 | Drawing (pdf) |
H-306 | 11 gallons | 18.5 | 14.25 | 15.5 | Drawing (pdf) |
H-322 | 12 gallons | 53 | 11 | 8 | Drawing (pdf) |
H-573 | 13 gallons | 19.75 | 17.75 | 13.5 | Drawing (pdf) |
H-552 | 14 gallons | 25 | 19.5 | 9.125 | Ask for details |
H-382 | 14 gallons | 67 | 11 | 8 | Drawing (pdf) |
H-271 | 16 gallons | 72.5 | 11 | 8.5 | Drawing (pdf) |
H-274 | 16 gallons | 79.5 | 11 | 8 | Drawing (pdf) |
H-381 | 18 gallons | 67 | 11 | 8 | Drawing (pdf) |
H-328 | 18 gallons | 68 | 14 | 8 | Drawing (pdf) |
H-248 | 18 gallons | 70.75 | 12 | 7.5 | Drawing (pdf) |
H-323 | 19 gallons | 68 | 12.25 | 8.5 | Drawing (pdf) |
H-337 | 20 gallons | 68 | 15 | 8.5 | Drawing (pdf) |
H-261 | 20 gallons | 71 | 15 | 8.5 | Drawing (pdf) |
H-321 | 20 gallons | 96 | 11 | 7.5 | Drawing (pdf) |
H-553 | 21 gallons | 24 | 19.5 | 12.75 | Drawing (pdf) |
H-556 | 21 gallons | 24.0625 | 20.4375 | 14.25 | Drawing (pdf) |
H-338 | 24 gallons | 68 | 15 | 8 | Drawing (pdf) |
H-555 | 27 gallons | 28 | 20 | 15 | Drawing (pdf) |
H-20 | 27 gallons | 53 | 13 | 12 | Drawing (pdf) |
H-247 | 27 gallons | 73.75 | 15 | 7.75 | Drawing (pdf) |
H-97 | 30 gallons | 38.75 | 21.5 | 11.5 | Drawing (pdf) |
H-91 | 30 gallons | 54.5 | 32 | 7 | Drawing (pdf) |
H-37 | 35 gallons | 70 | 15 | 10 | Drawing (pdf) |
H-315 | 40 gallons | 57 | 28 | 9 | Drawing (pdf) |
H-351 | 44 gallons | 59 | 17 | 13 | Drawing (pdf) |
H-486 | 47 gallons | 78 | 16.9375 | 11.375 | Ask for details |
H-490 | 47 gallons | 81 | 17 | 11.625 | Ask for details |
H-471 | 48 gallons | 54.25 | 20 | 13 | Ask for details |
H-481 | 59 gallons | 78 | 20 | 11.375 | Ask for details |
H-385 | 60 gallons | 76.5 | 14.75 | 16 | Ask for details |
H-391 | 61 gallons | 80 | 13.75 | 20.5 | Ask for details |
H-482 | 63 gallons | 78 | 23 | 11.375 | Ask for details |
H-487 | 68 gallons | 78 | 23.5 | 11.375 | Ask for details |
H-489 | 68 gallons | 81 | 23.5 | 11.625 | Ask for details |
H-169 | 72 gallons | 90 | 20 | 11 | Drawing (pdf) |
H-477 | 74 gallons | 57.5 | 48.5 | 9.25 | Ask for details |
H-357 | 75 gallons | 76.5 | 13.5 | 21 | Drawing (pdf) |
H-243 | 78 gallons | 85 | 13.25 | 18.5 | Ask for details |
H-557 | 80 gallons | 37 | 22.5 | 25.625 | Drawing (pdf) |
H-470 | 80 gallons | 56.75 | 48.75 | 7.75 | Ask for details |
H-495 | 80 gallons | 58 | 24.5 | 17 | Ask for details |
H-473 | 100 gallons | 63.75 | 23.5 | 19 | Ask for details |
Our friendly staff is here to help you get the exact product you need!
Marine Black Water Holding Tanks
Recessed End Dump Holding Tanks w/Rails

Part No. | Capacity | Length | Width | Depth | Drawing |
H-586 | 12 gallons | 35.5 | 18 | 6 | Ask for details |
H-587 | 19 gallons | 52 | 19 | 6 | Drawing (pdf) |
H-577 | 23 gallons | 48 | 17.5 | 10 | Drawing (pdf) |
H-508 | 35 gallons | 56 | 24 | 8.125 | Ask for details |
Marine Black Water Holding Tanks
Recessed Side Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawing |
H-575 | 12 gallons | 19.75 | 17.75 | 10 | Drawing (pdf) |
Marine Black Water Holding Tanks
Recessed Side Dump Holding Tanks With Rails

Marine Black Water Holding Tanks
Side Dump Holding Tanks

Part No. | Capacity | Length | Width | Depth | Drawing |
H-542 | 9.5 gallons | 26.875 | 20.25 | 6.875 | Ask for details |
H-574 | 10 gallons | 46.75 | 28 | 2.75 | Drawing (pdf) |
H-324 | 11 gallons | 34.5 | 16.5 | 6.5 | Drawing (pdf) |
H-576 | 11 gallons | 46.75 | 28 | 3.5 | Drawing (pdf) |
H-559 | 14 gallons | 46 | 16 | 6 | Drawing (pdf) |
H-564 | 18 gallons | 36.25 | 24.125 | 6 | Drawing (pdf) |
H-428 | 21 gallons | 53 | 24 | 6 | Drawing (pdf) |
H-550 | 24 gallons | 32 | 23 | 9.125 | Drawing (pdf) |
H-423 | 25 gallons | 39 | 31 | 6.5 | Drawing (pdf) |
H-561 | 29 gallons | 30.375 | 28.3125 | 9.75 | Drawing (pdf) |
H-532 | 30 gallons | 110 | 14.5 | 6 | Drawing (pdf) |
H-450S | 32 gallons | 38.75 | 46 | 6.5 | Drawing (pdf) |
H-416 | 35 gallons | 104 | 17.25 | 6 | Drawing (pdf) |
H-450L | 35 gallons | 42 | 46 | 6.5 | Drawing (pdf) |
H-578 | 38 gallons | 72.5 | 22 | 6.5 | Drawing (pdf) |
H-452 | 41 gallons | 83 | 16 | 10.25 | Drawing (pdf) |
H-414 | 41 gallons | 85.5 | 16 | 10.75 | Drawing (pdf) |
H-126 | 42 gallons | 42 | 27.25 | 10.5 | Drawing (pdf) |
H-239 | 42 gallons | 42.5 | 27.25 | 10.5 | Drawing (pdf) |
H-443 | 44 gallons | 85.5 | 22 | 10.25 | Drawing (pdf) |
H-541 | 45 gallons | 55 | 50 | 6 | Ask for details |
H-439 | 53 gallons | 84 | 20.5 | 9.75 | Drawing (pdf) |
H-283 | 57 gallons | 42 | 27.25 | 13 | Drawing (pdf) |
H-349 | 57 gallons | 70 | 24 | 10 | Drawing (pdf) |
H-441 | 59 gallons | 85.5 | 22 | 10.25 | Drawing (pdf) |
H-442 | 59 gallons | 85.5 | 22 | 10.25 | Drawing (pdf) |
H-282 | 60 gallons | 60 | 27 | 11.5 | Drawing (pdf) |
H-415 | 60 gallons | 85.5 | 24.5 | 10.75 | Drawing (pdf) |
H-451 | 64 gallons | 83 | 24.5 | 10.25 | Drawing (pdf) |
H-155 | 65 gallons | 85 | 22.75 | 12.5 | Drawing (pdf) |
H-426 | 65 gallons | 87.5 | 22 | 11.25 | Drawing (pdf) |
H-427 | 65 gallons | 87.5 | 22 | 11.25 | Drawing (pdf) |
H-440 | 70 gallons | 84 | 25 | 9.75 | Drawing (pdf) |
H-386 | 77 gallons | 87.5 | 22 | 13 | Drawing (pdf) |
H-387 | 77 gallons | 87.5 | 22 | 13 | Drawing (pdf) |
H-554 | 250 gallons | 72 | 48 | 19 | Drawing (pdf) |
Marine Black Water Holding Tanks
Side Dump Holding Tanks with Rails

Part No. | Capacity | Length | Width | Depth | Drawing |
H-82 | 18 gallons | 35.5 | 23.75 | 7.25 | Drawing (pdf) |
H-299 | 18 gallons | 45.25 | 27.5 | 5.5 | Drawing (pdf) |
H-530 | 19 gallons | 42 | 28 | 5.75 | Drawing (pdf) |
H-523 | 20 gallons | 53 | 16.5 | 4.8125 | Drawing (pdf) |
H-342 | 20 gallons | 55 | 20 | 7 | Drawing (pdf) |
H-343 | 20 gallons | 55 | 20 | 7 | Drawing (pdf) |
H-344 | 20 gallons | 55 | 47 | 6 | Ask for details |
H-563 | 21 gallons | 48.5 | 22.5 | 6 | Drawing (pdf) |
H-300 | 24 gallons | 52 | 17 | 8 | Drawing (pdf) |
H-246 | 25 gallons | 56 | 40 | 8 | Drawing (pdf) |
H-100 | 25 gallons | 58 | 32 | 6 | Drawing (pdf) |
H-83 | 25 gallons | 58 | 32 | 6 | Drawing (pdf) |
H-25 | 25 gallons | 59 | 27 | 5.5 | Drawing (pdf) |
H-228 | 29 gallons | 64.75 | 17 | 7.75 | Ask for details |
H-75 | 30 gallons | 43 | 20.5 | 12 | Drawing (pdf) |
H-335 | 30 gallons | 52 | 29 | 8 | Drawing (pdf) |
H-332 | 30 gallons | 55 | 35 | 7 | Drawing (pdf) |
H-347 | 30 gallons | 53.75 | 28 | 6.5 | Ask for details |
H-210 | 30 gallons | 56 | 36 | 6 | Drawing (pdf) |
H-210M | 30 gallons | 56 | 36 | 6.5 | Drawing (pdf) |
H-211 | 30 gallons | 56 | 36 | 6 | Drawing (pdf) |
H-547 | 31 gallons | 60 | 30 | 6 | Drawing (pdf) |
H-202 | 32 gallons | 54 | 28 | 7.75 | Drawing (pdf) |
H-212 | 34 gallons | 54 | 28 | 7.25 | Drawing (pdf) |
H-392 | 34 gallons | 54.25 | 28 | 7.25 | Drawing (pdf) |
H-211M | 34 gallons | 56 | 36 | 6.5 | Ask for details |
H-318 | 35 gallons | 55.5 | 30 | 7.5 | Drawing (pdf) |
H-208 | 35 gallons | 56 | 28 | 8 | Drawing (pdf) |
H-527 | 35 gallons | 59 | 28 | 8.125 | Drawing (pdf) |
H-582 | 37 gallons | 61.875 | 24 | 8 | Drawing (pdf) |
H-583 | 37 gallons | 61.875 | 24 | 8 | Drawing (pdf) |
H-358 | 38 gallons | 56 | 30 | 7.5 | Drawing (pdf) |
H-469 | 38 gallons | 60 | 24 | 8 | Ask for details |
H-221 | 39 gallons | 55.75 | 30 | 8 | Drawing (pdf) |
H-5 | 40 gallons | 52.5 | 24.25 | 9.25 | Drawing (pdf) |
H-505 | 40 gallons | 53 | 34 | 7.75 | Drawing (pdf) |
H-506 | 40 gallons | 53 | 34 | 7.75 | Drawing (pdf) |
H-352 | 40 gallons | 55 | 32 | 10 | Drawing (pdf) |
H-340 | 40 gallons | 55 | 35 | 7 | Drawing (pdf) |
H-341 | 40 gallons | 55 | 47 | 6 | Drawing (pdf) |
H-288 | 40 gallons | 56 | 30 | 7.75 | Drawing (pdf) |
H-474 | 40 gallons | 56 | 40 | 8 | Ask for details |
H-309 | 40 gallons | 57.75 | 42 | 6.75 | Drawing (pdf) |
H-289 | 40 gallons | 58 | 38 | 7.75 | Drawing (pdf) |
H-319 | 40 gallons | 59 | 28 | 8 | Drawing (pdf) |
H-320 | 40 gallons | 59 | 28 | 8 | Drawing (pdf) |
H-500 | 40 gallons | 65 | 24 | 8.25 | Drawing (pdf) |
H-245 | 41 gallons | 56 | 40 | 8 | Drawing (pdf) |
H-209 | 41 gallons | 56 | 32 | 7 | Drawing (pdf) |
H-203 | 42 gallons | 54.25 | 28 | 9 | Drawing (pdf) |
H-445 | 42 gallons | 54.5 | 26.5 | 9 | Drawing (pdf) |
H-240 | 44 gallons | 57 | 42 | 7 | Drawing (pdf) |
H-207 | 45 gallons | 56 | 40 | 7.75 | Drawing (pdf) |
H-378 | 45 gallons | 56 | 45 | 5.25 | Drawing (pdf) |
H-336 | 36 gallons | 57.25 | 32 | 9 | Drawing (pdf) |
H-409 | 45 gallons | 58.5 | 45 | 5.25 | Drawing (pdf) |
H-267 | 45 gallons | 60.5 | 33 | 9 | Drawing (pdf) |
H-455 | 46 gallons | 58 | 25 | 10 | Drawing (pdf) |
H-412 | 46 gallons | 64 | 31 | 8 | Drawing (pdf) |
H-585 | 47 gallons | 61 | 26 | 9.5 | Drawing (pdf) |
H-430 | 47 gallons | 61 | 36 | 7 | Drawing (pdf) |
H-526 | 48 gallons | 48 | 36 | 6.75 | Drawing (pdf) |
H-446 | 50 gallons | 54 | 35 | 9 | Drawing (pdf) |
H-413 | 50 gallons | 56 | 30 | 10 | Drawing (pdf) |
H-499 | 50 gallons | 56 | 35 | 9 | Drawing (pdf) |
H-431 | 50 gallons | 61 | 40 | 6.75 | Drawing (pdf) |
H-579 | 50 gallons | 65 | 29 | 8.25 | Drawing (pdf) |
H-497 | 55 gallons | 54 | 34 | 9 | Drawing (pdf) |
H-434 | 55 gallons | 56 | 35 | 9 | Drawing (pdf) |
H-438 | 55 gallons | 56 | 36 | 9 | Drawing (pdf) |
H-268 | 60 gallons | 60.5 | 33 | 9 | Drawing (pdf) |
H-581 | 65 gallons | 60 | 32 | 10.5625 | Drawing (pdf) |
H-580 | 67 gallons | 62 | 33.5 | 10.125 | Drawing (pdf) |
H-524 | 76 gallons | 64 | 46 | 8.25 | Drawing (pdf) |
H-544 | 80 gallons | 37 | 22.5 | 18.75 | Drawing (pdf) |
Our friendly staff is here to help you get the exact product you need!
Marine Black Water Holding Tank Benefits
These custom holding tanks are made with a roto-molding process to create a smooth, watertight product. Heat melts the virgin polyethylene resin inside a hollow, closed mold with temperatures ranging from 260°C – 370°C. As the mold rotates, the resin coats the inside, creating tank walls with even thickness. This roto-molded tank is made to be stronger and longer lasting than other similar plastic marine tanks.
- Unrivaled Durability and Leak-Free Performance: Discover the unmatched reliability of these marine black water holding tanks, meticulously crafted using cutting-edge roto-mold manufacturing techniques. With a seamless design and robust construction, the tanks are engineered to withstand the challenges of travel, providing you with a worry-free solution. Rest easy knowing that your tank is built to last, guaranteeing a leak-free and trouble-free experience throughout your journeys.
- Customizable Sizes and Configurations: Explore our extensive range of sizes and configurations tailored to suit various marine models and layouts. No matter the size or shape you require, our selection of black water tanks can be customized to perfectly fit your specific needs. Our commitment is to assist you in finding the ideal tank that not only maximizes storage capacity but also seamlessly integrates into the available space on your boat or yacht. Rely on us for tailored solutions that precisely match your marine water storage requirements.
- Expert Customer Support: Count on our dedicated and knowledgeable team to deliver exceptional customer support. Whether you need guidance in selecting the perfect tank or require assistance with installation, we are here to address all your inquiries and ensure that your black water tank operates flawlessly. Rest assured, our team is fully committed to assisting you at every step, ensuring your complete satisfaction with our products and services.

Rotomolded Black Water Holding Tanks:
Rotomolded tanks will provide you with a robust, reliable, and efficient solution. These tanks provide the peace of mind and exceptional performance needed for worry-free boating adventures, eliminating concerns about tank failures or maintenance issues. With their unique manufacturing process and inherent qualities, rotomolded tanks are the perfect choice for marine waste storage, elevating your water and waste storage capabilities to new heights.
Experience the outstanding benefits of rotomolded tanks and enhance your boating experience:
- Unparalleled Durability: Rotomolded tanks are meticulously crafted, resulting in an exceptionally sturdy, one-piece construction unit. Built to withstand impacts, vibrations, and the most challenging conditions, these tanks outperform others in durability, without the risk of cracking, splitting, or weak spots.
- Seamless Integrity: Enjoy the advantage of seamless design with these rotomolded tanks. The absence of seams or joints minimizes the likelihood of leakage, cracks, or weak points, ensuring a secure and contamination-free storage environment for your water or waste materials.
- Resilience Against Corrosion and Chemicals: Engineered to withstand exposure to a wide range of chemicals, these rotomolded tanks provide exceptional resistance to corrosion.
- Lightweight and Space-Efficient: Weight and space considerations are crucial, and these rotomolded tanks excel in both aspects. Compared to alternative tank materials, they are lightweight, reducing the overall weight of your vessel. Their flexible design allows for custom sizes and shapes, optimizing the utilization of available space.
- Versatility Tailored to Your Needs: These black water holding tanks offer unmatched versatility, catering to various marine applications. Whether you need a freshwater tank, black water tank, gray water tank, or a combination of them, these tanks can be customized to meet your specific requirements. Their adaptability ensures compatibility with different boat models and layouts. We also carry a variety of marine fresh water tanks too!
Experience the reliability and quality of marine black water holding tanks. Contact us today to explore the possibilities, and let us provide you with a tailored solution that meets your exact specifications.
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RV Fresh Water Tanks | Marine Holding Tank | Custom Rotomolded Tanks |
Questions? We can help! Call us at 1-863-261-8388 or request a price quote.