The world’s vast undersea energy infrastructure—oil and gas platforms, wellheads, pipelines and pumps—is now vulnerable to attack by cheap submarines and unmanned vehicles.
Nearly 60 years ago the classic television documentary series “Victory at Sea” first recounted the U.S. Navy’s exploits during World War II. Several episodes highlighted the Battle of the Atlantic against German submarines that were waging guerrilla war at sea. Their objective: destroy allied cargo ships providing an economic lifeline from America to Britain.
The German submarines pursued a form of warfare known as commerce raiding, attacking the enemy’s economic assets at sea. The U.S., British and Canadian navies won the Battle of the Atlantic, thanks to their use of convoys and exploitation of advances in antisubmarine warfare technology and tactics—but only after suffering horrendous losses in blood and treasure.
At war’s end, the United States emerged as far and away the world’s predominant naval power. Since then the U.S. commitment to providing unfettered access to the world’s seas to all nations has enabled an era of economic globalization and growth.
Memories of a time when access to the seas was not guaranteed have faded. Yet much has changed in the past 60 years. Two developments in particular suggest a growing need for the United States and other peaceful nations to begin thinking anew about how to defend their maritime commerce, albeit under very different circumstances.
The first development is the emergence of an undersea economy. Two years after World War II, in 1947, the first offshore discovery of oil out of sight of land occurred in the Gulf of Mexico. Today nearly 30% of U.S. oil production and 15% of gas production is produced from wells on the Outer Continental Shelf. Globally, some 30% of the world’s oil output comes from offshore production.
An enormous amount of capital investment has gone into creating this undersea energy infrastructure. This includes the oil platforms that drill, extract and temporarily store oil and gas, as well as the oil and gas wellheads, pipelines and pumps required to transfer the product from its undersea location to shore.
This vast infrastructure was built with the assumption that while it would have to weather natural disasters, it would not be a target in war. In military parlance, much of the infrastructure comprises “soft” targets that would not require much in the way of explosives to cause significant, and perhaps catastrophic, damage. Fortunately many of these targets have not been easy to reach—until now.