Free Foundation
Ballast Water Management
Why ballast water became one of shipping's most tightly regulated discharges, what the D-1 and D-2 standards actually require, how treatment systems earn their approvals, and how to run the record book, the malfunctions and the port state control visit without drama.
- Lessons
- 5
- Quiz questions
- 40
- Time
- About 33 min
- Who it's for
- Deck officers and engineers who operate a ballast water management system, superintendents who answer for one, and shore staff who read the record book after something has gone wrong.
- Assumed knowledge
- None. Familiarity with ballast operations helps, but every regulation, standard and number used in the course is introduced inside the lessons.
- Taught by
-
CEO & Founder, Blue Autonomy
- Naval architect and marine engineer, National Technical University of Athens
- 15 years of experience in fleet performance and operational data
- Chief Scientific Officer, NEMO, previously DeepSea Technologies, StormGeo, Athenian Sea Carriers, PwC
What you will be able to do
By the end of the course. Each outcome names the lessons that deliver it, and each lesson's quiz checks it.
- Explain why ballast water became a tightly regulated discharge, given the scale of the transfer (billions of tonnes a year) and the biology that makes an invasion irreversible in a way a spill is not, and describe the BWM Convention's architecture: approved management plan, record book, International BWM Certificate, and the phase-in that completed on 8 September 2024. Lesson 1
- State the exchange and discharge standards number by number: 95% volumetric exchange under D-1 (three tank volumes for flow-through), the 200 nautical mile and 200 metre siting rules of regulation B-4, and the D-2 viable-organism limits by size class. Explain why exchange was designed as a transitional measure, with its stability and hull-girder constraints. Lesson 2
- Describe the three established treatment families (filtration plus UV, filtration plus electrochlorination, and chemical injection), with the operating envelope that defeats each (UV transmittance, salinity and temperature, neutralisation of residual oxidant), and trace the approval trail: BWMS Code type approval mandatory for installations from 28 October 2020, Procedure (G9) active-substance approval, and commissioning testing of the actual installed discharge since 1 June 2022. Lesson 3
- Keep a compliant ballast water record book under the amended format applying from 1 February 2025 (electronic record books approvable from 1 October 2025), recognise the common malfunctions (filter clogging in silty ports, TRO alarms) for what they are, and use the malfunction-notification, contingency and challenging-water-quality routes (MEPC.387(81)) correctly rather than bypassing. Lesson 4
- Anticipate how a port state control inspection escalates from documents to crew familiarity to indicative and detailed sampling, state how the separate United States regime differs (independent USCG type approval, treatment rather than exchange, national reporting), and place the MEPC 84 amendment package (expected in force around 2028) in the ship's planning horizon. Lesson 5
Ballast water is the discharge nobody used to think about. It is just the sea, pumped aboard to keep an empty ship safe and pumped back out when the cargo arrives, and it turned out to be the single largest pathway by which marine species cross oceans they could never cross alone. The regulatory answer, the Ballast Water Management Convention, took thirteen years to enter into force and another seven to phase in fully. Every ship in scope now has to meet a numeric discharge standard, carry approved hardware to do it, and prove both on paper and in person when an inspector walks up the gangway.
This course covers that whole arc in five short lessons: why the problem is irreversible in a way an oil spill is not; what the D-1 exchange and D-2 discharge standards actually say, number by number; how UV, electrochlorination and chemical-injection systems work and get approved; what the record book, malfunction and contingency routines look like when they are done properly; and what port state control expects, including the separate American regime, plus the amendments coming next.
It will not replace your ship's ballast water management plan. It will make the plan, the record book and the inspector considerably less mysterious.
What the course covers
How was this course?
You have completed every lesson. One rating and, if you like, one line: it goes to the author, and it is how the course gets revised.
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