Fourteen (14) different ballast water management tech & systems reviewed by IMO

Excerpts from the Ballast Water Management Convention:

Review of Convention
The Convention requires a review to be undertaken no later than three years
before the first effective date for compliance set out in the Convention in
order to determine whether appropriate technologies are available to achieve
the standard. A Review Group established at the session reviewed
14 different ballast water management technologies and systems
which could meet the ballast water performance standard in the Convention.

Update on the BWM status as of March 31, 2008:
13 states have ratified or 3.62% of world tonnage.

The 14 different ballast water management technologies and systems remains to be seen yet.