Aboard ship or in an approved simulator, given access to a sewage waste treatment plant and proper tools and equipment.

Performance requirement

Behavior Standard
The student will: During assessment, the student shall, at a minimum:

Identify and Describe the visible components of the msd and lift station

Identify and describe at least the following:

  • black water inlet
  • gray water inlet
  • chemical treatment
  • operating discharge pump
  • macerator
  • overflow
  • control panel
  • operating compressors
  • sludge and scum returns

Trace the discharge piping of the msd

Trace system in auxiliary machinery room only

Describe the procedure to start and secure the sewage treatment plant

  • follow correct procedures
  • prevent safety and pollution violations

Apply regulations to the operation of the MSD

State requirements for overboard discharge of waste


Assessed in EN‑2231 Sea Term II: Marine Engineering.


  1. Table A-III/1 OICEW-D1.2
  2. NVIC Task

See the Assessment Guidelines for additional specifications of behavior and standards.