There's a lot of backlog. Unfortunately we're starting from a bad place. Either you have to consider this to be front-end loaded, or you have to accept that it's going to take a long time to remediate.
It's interesting that the sums from the Ship-source Oil Pollution Fund are $1 million or $1.5 million a year. In Washington state, which is one of the most advanced jurisdictions in the U.S., their funding level is about $2.5 million a year. That deals with about 50 vessels a year, the average cost being $50,000 a vessel. That's what it takes to remediate the big problems.
The other key element is early intervention. If it doesn't sink, you can dispose of it for a few hundred dollars. If it does, it will cost you $50,000.