BIMCO submits proposal to IMO to extend BWM experience-building phase


BIMCO has submitted a proposal to the upcoming Marine Environment Protection Committee (MEPC) 77 with the aim to extend the experience-building phase (EBP) associated with the International convention for the control and management of Ships’ ballast water and sediments, 2004 (BWM Convention). The extension is deemed necessary due to slow progress of the data collection phase.

The proposal to the MEPC 77 in November has been submitted by BIMCO in co-operation with other major industry bodies; IACS, ICS, INTERCARGO and INTERTANKO.


The EBP was established when the BWM Convention came into force on 8 September 2017, with the aim of gathering experience from real life situations when the convention is in force. Based on the experience gained, the BWM Convention will be reviewed and, if required, a set of amendments will be made to make it more robust.

The EBP is structured in three stages. Data gathering stage, Data analysis stage, and Convention review stage. At the end of the EBP, if applicable, a full set of amendments will be proposed to the BWM Convention.

In order to collect the data in a structured manner, IMO has set up a database on the Global Information Shipping Information System (GISIS) platform.

While the EBP is in place, there are certain non-penalisation measures in place which recognise the ships which, despite the proper installation and use of approved ballast water management systems (BWMS), are not able to comply with the standards mentioned in the regulation of D-2 of the Convention. These non-penalisation measures will come to an end with the completion of EBP.

Inadequate progress

The progress of EBP has not been in line with what was anticipated when it was originally put in place. In fact, as of now, the EBP has been behind schedule by almost three years. The following table offers an overview of the current status of each phase and the actual planned timeline.

MEPC Session  Timing Convention's Milestone EBP/MEPC Original Action Plan Current Status
 73 Autumn 2018 Convention has been in force for one year   No data received from any member state
 74 Spring 2019   First year's data available No data received from any member state
 75 Spring 2020 Convention has been in force for two years Second year's data available, stocktaking of EBP timeline MEPC 76 postponed to June 2021 due to Covid-19 pandemic.

Four member states submitted data.

WMU has been engaged in this work. (MEPC 76/4/3)
 76 Autumn 2020 Convention has been in force for three years Partial third year’s data available, as foundation to agree to data analysis and report terms of reference As per MEPC 77/4/5, a total of five member states have submitted data. Just one more than the previous submission.

MEPC 77 is planned to take place in November 2021
 77 Spring 2021   Full set of third year’s data available, draft analysis report drafted.  
 78 Spring 2022 Convention has been in force for four years Final analysis report received. Review of Convention and identification of potential amendments.  
 79 Autumn 2022 Convention has been in force for five years Package of potential amendments submitted to parties.  

Reasons for proposing an extension

It was envisaged at the time of starting the EBP that countries and port state control (PSC) organisations would have been gathering significant levels of data, and that this would be fed into the IMO GISIS system for proper collection and analysis. However, so far, only five member states have submitted data, which represents approximately 200 ships. In BIMCO’s view, this is insufficient to proceed to the next stage if a proper data analysis must be conducted.

It is reasonable to assume that the COVID-19 pandemic may have significantly impacted on planned numbers of onboard inspections and their scope relating to the BWM Convention over the last two years.

Furthermore, the number and variety of approved BWMS has increased lately, and the operational data is more available now than in the past. This data needs to be gathered and analysed for the outcome of the EBP to be realistic. From 28 October 2020, only BWMS approved in accordance with BWMS code are required to be installed on board ships, and the data related to these systems will give a more realistic picture of the latest BWMS approval in place.

Finally, ships whose International Oil Pollution Prevention Certificate (IOPPC) renewal survey was conducted between 8 September 2017 and 8 September 2019 will be due to comply with the D-2 standard prescribed in the BWM Convention by 8 September 2024 at the latest. These ships will benefit from more clarity that will come from a well conducted EBP.


Keeping all the above benefits in mind for all involved stakeholders including member governments, Ballast water equipment manufacturers, PSC organisation and shipowners, BIMCO, and the industry organisations that has joined in the submission, have written to MEPC 77, with a proposal to extend the EBP by minimum two years, until Autumn 2024.

The MEPC 77 is due to meet on 22 November and BIMCO will keep you posted regarding the outcome of this proposal.

Download the full submission to MEPC77

Ashok Srinivasan
in Singapore,


Access BIMCO's COVID-19 related articles and advice.

Read more

VPS Bunker Alerts

Veritas Petroleum Services (VPS) publish regular Bunker Alerts based entirely on fuel samples and have kindly permitted BIMCO’s Members to access this information.

The Bunker Alerts are not intended to be an evaluation of overall bunker quality in the port or area concerned, but usually highlight a specific parameter within the fuel which has raised a quality issue.

Latest piracy reports


Latest industry releasable threats



Contracts & Clauses

All of BIMCO's most widely used contracts and clauses as well as advice on managing charters and business partners.

Learn about your cargo

For general guidance and information on cargo-related queries.

More about cargo

BIMCO Publications

Want to buy or download a BIMCO publication? Use the link to get access to the ballast water management guide, the ship master’s security manual and many other publications.

About a new business partner

We can help members check new business partners. We also help to recover millions of USD (undisputed) funds every year.