The planet’s oceans and seas are anything but a pond of oil, and not precisely because of the climate: the Black Sea with the war between Russia and Ukrainethe Baltic Sea with hybrid warfare and ghost fleets, Strait of Hormuz tensions through which 20% of the world’s oil passes or the Red Sea crisiswith Houthi drones and missiles. And those are just some of the hot spots that cause logistics and merchant vessels to face serious problems in carrying out their functions.
The possibility of sending the navy as a companion for those routes where the atmosphere is heated is obviously not an option. So the US Defense Advanced Research Projects Agency (DARPA) has contracted to a company to solve it with an autonomous escort system with drones.
Context. If the Strait of Hormuz is a strategic point for international trade, the Bab el-Mandeb Strait is not far behind: 12% of world maritime trade passes through it, according to the Middle East Research Center. But since 2023, passing through there is a minefield, which has led to thousands of boats (according to Wikipedia citing Pentagon sources) follow an alternative route that involves going around all of Africa passing through the Cape of Good Hope.
That’s 20,000 extra kilometers, ten more days of travel and the consequent expense in fuel. This specific case is not a mere example: it is what has led DARPA to make the decision to count on Raytheon to unclog this bottleneck as soon as possible, as explains the company’s president of Advanced Technology, Colin Whelan.
Why is it important. Because 80% of world trade circulates by sea and there are a series of straits that are critical and that, in the event of conflict, act as bottlenecks due to their vulnerability. And the effects are immediate in the form of delays in supplies and prices.
The protection of merchant ships to date required a naval escort in a slow, expensive operation and for which there are not enough troops to allocate them to that mission. What Pulling Guard proposes is autonomous protection without requiring extra crew or structural modifications.
What is Raytheon? That company is not any: Raytheon is the arms division of the RTX group, the largest aerospace and defense company in the world, with 180,000 workers and $88 billion in turnover in 2025. With more than a century behind it and headquartered in Virginia, it has missiles such as the Patriot or the Tomahawk on its resume. It is one of the Pentagon’s Big Five contractors and is a regular in DARPA contracting.
What is Pulling Guard. Pulling Guard is the system developed by Raytheon, a semi-autonomous platform towed by the ship it protects. From this, a drone operates with electro-optical and infrared sensors to detect potential threats and transmit information in real time to remote operators on the ground or on board. The latter are in charge of making decisions without the crew exposing themselves.
It has two phases: in the first it is an advanced surveillance system and in the second it integrates weapons. Pulling Guard is neither a passive shield nor a preventive warning system: it is, in short, a light autonomous combat unit attached to a civilian ship.
What we still don’t know. Beyond technical unknowns such as the budget, the phase schedule or the type of integrated weapons, this proposal raises two tricky questions: international law and gray areas.
Without going any further, from issues such as what rules of engagement apply to the remote operator from the ground authorizing fire, who is legally responsible for the attack or what happens if the system acts in the waters of a third state. Not to mention something more mundane like flag registrations or insurance companies. Or something even more basic: does the ship lose its civilian status by carrying this system?
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Cover | Raytheo
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