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MarineFAST® M Series Systems – Compact. Reliable. Built for Tight Spaces.

The MarineFAST® M Series is a line of Type II Marine Sanitation Devices (MSDs) engineered to treat blackwater and graywater onboard commercial vessels with crews of up to 60 people. Designed for flexible installation in areas with low headroom, narrow access, the M-series units can fit through watertight doors and across multiple compartments or decks. The system is fully certified to meet USCG and IMO MEPC.159(55) standards and delivers dependable treatment without sacrificing valuable space.

Why Choose the M Series?

Modular and Flexible

Units can be disassembled to pass through standard watertight doors and reinstalled across separate compartments or decks.

Preassembled and Factory Tested
Ships fully assembled, wired, and tested to save installation time and reduce setup complexity.
Space-Conscious Design
Compact footprint is ideal for tight machinery spaces, shaft alleys, and below-deck installations.
Certified and Compliant
Meets or exceeds USCG 33 CFR 159 and IMO MEPC.159(55) sanitation standards.
Low Maintenance Operation
No moving parts in contact with sewage. No need for manual cleaning, special tools, or advanced operator training.
Built-In Sludge Storage
Includes integrated sludge storage capacity for extended use and operational efficiency.

How It Works

The M Series uses a proven, efficient biological treatment process to break down and disinfect onboard sewage, all within a compact and contained system.

  • Sewage Inflow: Wastewater flows directly into the system without the need for a macerator or bar screen.
  • Aeration and Treatment: A compact blower sends air through internal piping to an airlift system. This recirculates and oxygenates the tank to support microbial breakdown on fixed media.
  • Disinfection: Treated effluent overflows into a chlorination system (tablet or liquid) and passes through a retention tank. Float switches automate level and pump control.
  • Effluent Transfer: Disinfected water is pumped from the wet well to open water. Custom discharge options are available as needed.

Key Features

Modular System
Design
Components can be separated and installed in tight or split-space layouts.

Compact Capacity Options
Treats between 200 and 1,500 gallons per day depending on model selected.

Chlorination
Options
Includes tablet chlorinator or optional liquid feed system with appropriate contact time.

Space-Friendly
Layout
Fits through narrow access points and installs in spaces with limited headroom.

Factory-Assembled and Wired
Arrives tested and prewired to streamline the installation process.

Low Maintenance Needs
No direct contact with sewage and no need for frequent cleaning or special tools.

Certified and
Compliant
Meets or exceeds USCG 33 CFR 159 and IMO MEPC.159(55) for marine sanitation systems.

Models & Capacities

Choose the right size for your needs:

Model Number – all except MEPC M-1 M-2 M-3 M-4 M-5
Model Number – MEPC units only M-1M M-2M M-3M M-4M M-5M
Rated capacity people
blackwater only 13 20 30 40 61
above plus showers & hand sinks 10 15 23 30 46
above plus dishwashing & laundry 5 8 12 16 25
above plus ground food waste 4 6 8 11 17
Rated capacity gpd [m³/d] 340[1.3] 510[1.9] 720[2.7] 1100[4.2] 1700[6.4]
Recommended max gpd [m³/d] 270[1.0] 400[1.5] 610[2.3] 810[3.1] 1200[4.5]
Number of Media Treatment Tanks 1 1 1 2 2

Applications

Designed for vessels with tight access and complex layouts, the M Series is ideal when components
need to be separated and installed in challenging spaces.

Vessels with watertight
door restrictions

Retrofits requiring modular
installation across decks

Workboats
and dredges

Barges and
offshore platforms

Slide-In™ Marine Sanitation Device (MSD)

Smarter Installation. Easier Service. Proven SciencoFAST Reliability.

The SciencoFAST MSD Slide-In™ is a next-generation Marine Sanitation Device (MSD) engineered specifically for vessels where every inch of space matters. Designed to mount directly into existing hull tanks using an integrated rail system, the MSD Slide-In simplifies installation, improves service accessibility, and delivers the trusted wastewater treatment performance SciencoFAST is known for worldwide. Whether for new vessel construction or retrofit applications with existing tanks, the MSD Slide-In provides a compact, efficient sanitation solution without compromising compliance or reliability.

Why Choose the MSD Slide-In?

Traditional marine sanitation systems can be difficult to install and maintain in tight equipment rooms. The MSD Slide-In solves that problem with an innovative slide-in rail platform that allows the unit to move easily into place and slide back out for inspection or service.

  • No vertical lifting.
  • No major equipment disassembly.

  • No wasted space.

Just smarter marine sanitation engineering.

How It Works

The MSD Slide-In mounts onto a durable rail platform installed within the vessel’s existing hull tank structure. During installation or maintenance, operators simply slide the unit forward along the rails for full access to key components and service areas.

MSD SLIDE-IN MODELS & CAPACITIES

Slide-In Rail
System
Integrated rails allow the MSD to slide directly into existing hull tanks and slide back out for easy service access—ideal for vessels with limited mechanical space.

Simplified
Maintenance
Technicians can quickly access critical components without removing surrounding equipment, helping reduce downtime and maintenance costs.

Compact &
Efficient Design
Maximize available onboard space while maintaining the treatment performance required for modern marine sanitation systems.

Ideal for Retrofits &
New Builds
Perfect for older vessels with constrained equipment rooms as well as custom vessel designs where space optimization is essential

MSD SLIDE-IN APPLICATIONS

Designed for vessels with tight access and complex layouts, the MSD Slide-In is ideal when components
need to be separated and installed in challenging spaces.

Passenger vessels

Ferries

Workboats

Offshore vessels

Research vessels

Retrofit projects

Compact custom vessel designs

Compliance You Can Trust

The M Series and MSD Slide-in is built to meet demanding marine sanitation requirements and is
tested and certified to major industry standards, including:

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