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The MSD Tank

USCG and IMO Certified Type ll Marine Sanitation Device
Black and Gray Water Treatment System

​The MSD Tank is a flow-thru biological (aerobic digester) processing system for treating black water (sewage) and gray water on-board to produce a high quality effluent, due to simple effective design and strict concise quality control standards. Sizes available from 8 to over 1000 persons. Black and Gray water treatment.
​The MarineFAST Type ll MSD systems are USCG and IMO certified to national and international regulation standards. These modular systems are great for new builds and for retrofitting into almost any existing space and let’s these units pass thru most marine access ways and passages for even easier re-fits.

Application Survey

S/LX/X Series Brochure

S/M/X and S/MX/X Series Brochure

The MSD Tank units fit where no other units can go. What a great idea ! A great well designed modular MSD for treating black and gray water economically.
Ready to fit and work in limited spaces, the MSD system is a complete package ready to install and operate. For ALL VESSELS:
  1. Dredges
  2. Towboats
  3. Offshore Platforms
  4. Tankers
  5. Harbor Tugs
  6. Tugs
  7. OSV’s
  8. Pilot Boats
  9. Line Boats
  10. Drill Ships
  11. Cruise Ships
  12. Float homes or camos
The MSD Tank complete system comes equipped with:
Media Tank and Wetwell, Aeration Blower, Tablet Chlorinator, Effluent Discharge Pump and Manual motor starters and controls

How It Works! The MSD starts off full of water and bacteria.

#1. Fluid and liquid wastes enter the system by gravity or pumped flow. One gallon of waste flushed in causes one gallon of treated black water to be discharged.

#2. The Quiet compact blower provides air (for the aerobic bacteria) thru internal piping for the airlift system in the media tank.

#3. The Aeration blower pump thru the airlift circulates and aerates the hungry bacteria promoting growth to build and populate the media as a base to work from to eats and digest the organic. material (poop & paper).
​These bugs love POOP!

#4 The digested and treated effluent / black water flows into the chlorine contact chamber or wetwell, over the tablets to dissolve the chlorine in the right portion for disinfected discharge. Options available

#5. Sized for peak flow periods the chlorine chamber or Wetwell provides adequate time to disinfect the effluent prior to discharge. Automatic float switches control water levels for on/off operation.

#6. A built in submerged effluent pump in the wet well pumps treated effluent.​

EFFLUENT STANDARDS:

USCG 33CFR159 – Minimum 33CFR159 / MEPC.2(VI) standards for 150; TSS, 200 fecal, certifi ed by U.S. Coast Guard installed aboard vessels and not subject to effluent sampling in service not required by regulations.

MARPOL 2010 – 25 BOD5, 35 TSS, 125 COD, 100 fecal effluent for USCG certified units and recommended for general marine use with 2 months internal sludge storage and dechlorination of effluent. Secondary treatment may be required for restricted waters, barges meeting local or harbor regulations, and offshore applications that are subject to state or other regulations.
USEPA Secondary Treatment – Applications requiring 85% removal, 30 BOD5, 30 TSS secondary treatment, 3 months internal sludge storage, and derate by 10% for dilute sewage.

So why get The MarineFAST MSD?

A Marine Sanitation Device (MSD) is required on all vessel with toilets. Even with lots of movement on the water, small spaces to work with, variable crewing and flow surges, The MSD’s robust design and treatment process delivers on the consistent performance to make the MSD extraordinarily reliable.

The MSDTank is self regulating and no adjustments are needed—ever. Surge loads at shift changes and with other activities don’t affect performance. The MSD is not reliant on operator intervention or skill. This is a simple reliable technology married to high quality components with tight quality control insuring great performance even under tough conditions. The MSDTank takes all the crap you can give it!

The MSD Tank System meets and exceeds standards for USCG 33 CFR Part 159 Certification, including design, construction, and testing. The Type ll MSD system is an aerobic/biological digestion based, flow-through discharge service, producing effluent having fecal coliform bacteria count not greater than 200 per 100 Milliliters and suspended solids not greater than 150 Milligrams per liter.

International Standards: Shipboard sewage systems manufactured in compliance with MARPOL Annex IV may be certified by the U.S. Coast Guard Marine Safety Center (MSC) as meeting the requirements of both 33 CFR Part 159 and MARPOL Annex IV. Type approval is annotated on the U.S. Coast Guard Certificate of Approval. More information is available in the U.S. Coast Guard Navigation and Vessel Inspection No. 1-09.
Vessel Manufacturers: Manufacturers may not sell or distribute vessels having an installed toilet facility, unless it is equipped with an installed and operational MSD of the type approved by the U.S. Coast Guard to meet the requirements of 33 CFR Part 159. The term vessel includes every description of watercraft or other artificial contrivance used, or capable of being used, as a means of transportation on the waters of the United States.
Vessel Manufacturers: Manufacturers may not sell or distribute vessels having an installed toilet facility, unless it is equipped with an installed and operational MSD of the type approved by the U.S. Coast Guard to meet the requirements of 33 CFR Part 159. The term vessel includes every description of watercraft or other artificial contrivance used, or capable of being used, as a means of transportation on the waters of the United States.
Foreign Vessels: While in US waters, foreign vessels having a valid International Sewage Pollution Prevention Certificate (ISPPC) issued by it’s flag Administration indicating that the installed sewage system complies with MARPOL Annex IV as amended by either resolution MEPC 159(55) or MEPC 2(VI) will be accepted by the USCG as being in compliance with 33 CFR Part 159.
Vessel Operators: No person may operate any vessel having an installed toilet facility , unless it is equipped with an installed and operational MSD of the type approved by the U.S. Coast Guard to meet the requirements of 33 CFR Part 159.
Inspected Vessels: In addition to the MSD requirements in 33 CFR Part 159, inspected vessels must also comply with the marine engineering regulations in 46 CFR Subchapter F and the marine electrical regulations in 46 CFR Subchapter J. The USCG Certificate of Approval and device label will both indicate the inspected vessel for those devices that meet these additional requirements and therefore are suitable for installation onboard inspected vessels.
International Voyages: US Vessels on International Voyages may obtain a USCG statement of voluntary compliance to demonstrate compliance with international sewage regulations contained in Annex IV to MARPOL 73/78.

Here's what you get!

  • Certfied, reliable and well proven technology
  • Strong, custom steel tanks
  • Smaller vessel systems in HDPE and XLPE tanks
  • Corrosion Proof
  • Custom or standard designs
  • Self starting and self regulating operation
  • Longer Service life