I don't think that is an apt.... It's a non sequitur because what we're talking about is when you create a marine protected area, what is it about that natural zone in the ocean that you want to make it a marine protected area.
Around the world marine protected areas have, for instance, caused a tremendous improvement in fishing results for local fishermen, because a zone has been created where the fish populations can replenish themselves, and it actually improves fishing activity.
A tanker moratorium is quite distinct from anything to do with a marine protected area.