Cannon Law

What’s the link between how far you could fire a gun in the 17th century, the 2009 Nobel Prize for economics, and the forthcoming Insights book on Fisheries? The answer is: governance.

The last chapter of the Insights looks at how fish stocks could be managed sustainably. One of the issues is that the oceans are a global commons, with every nation having the right to travel on them and exploit what is in or under them.

It’s not an unlimited right though, being governed by the Law of the Sea. That’s where the guns come in. In the 17th century, certain aspects of territorial integrity and sovereignty were decided on the basis of the “cannon shot rule” – how far you could fire a cannon. The three-mile limit around a coast is based on this. This has now been extended to 200 miles, but that still leaves out most of the world’s oceans. (more…)