Against. While I agree with the intentions of the author, I simply cannot support it because of several fatal flaws.
1. I think the author goes about it wrong. Frankly, I'd have created a committee (either the IMDMC, WHAMMO, or some other relevant committee) that member-states must send reports regarding maritime pollution in order to have a comprehensive list of high-polluting nations.
2.. Clause 2 does not go far enough for me. Honestly, it should be a mandate for private organizations and/or corporations under the jurisdiction of a member state to submit that data to the mother nation, for that nation to submit to the aforementioned committee.
3. The final clause is inherently flawed - the international average will fall naturally as a result of those above the average lowering their maritime pollution. Unless, of course, it's referring to a one-time reduction, in which case it's fairly pointless and would work much better as an international treaty as opposed to concrete legislation.
4. I'm not expert on it, but I believe they misused 'fiscal year.'