Updated: November 18, 2020 (Originally published September 15, 2020)
An artist’s rendering of the Sea Train concept. Illustration courtesy DARPA
The U.S. Defense Advanced Research Projects Agency, aka DARPA, has awarded contracts to private sector companies as part of a project to demonstrate the use of long-range unmanned surface vessels for naval operations.
The contracts were awarded to Applied Physical Sciences Corp., Gibbs & Cox Maritime Solutions, and InMar Technologies. Specifically, the companies will be working on a program called Sea Train.
DARPA explains the Sea Train program on its website:
The Sea Train program aims to demonstrate long range deployment capabilities for a distributed fleet of tactical unmanned surface vessels. The program seeks to enable extended transoceanic transit and long-range naval operations by exploiting the efficiencies of a system of connected vessels (Sea Train).
The goal is to develop and demonstrate approaches that exploit wave-making resistance reductions to overcome the range limitations inherent in medium unmanned surface vessels. DARPA envisions sea trains formed by physically connecting vessels with various degrees of freedom between the vessels, or vessels sailing in collaborative formations at various distances between the vessels.
The contract awards follow news last week awarded contracts totaling nearly $42 million to six companies to study adding large unmanned vessels to the U.S. Navy fleet. The companies included Huntington Ingalls, Lockheed Martin, Bollinger Shipyards Lockport, Marinette Marine Corp., Gibbs & Cox, and Austal USA.
Operating as an agency of the United States Department of Defense, DARPA’s goal is to research and develop new and emerging technologies that could be of use by the military.
The hospital ship USNS Mercy departed Alabama Shipyard on Tuesday, transiting southbound through the Gulf of Mexico at about 10.5 knots, closing out months of drydock work while fresh questions swirl about...
U.S. forces have boarded the sanctioned oil tanker Bertha in the Indian Ocean, marking the tenth vessel seized or interdicted in an intensifying campaign against the shadow fleet transporting illicit...
Iran is close to a deal with China to purchase anti?ship cruise missiles, according to six people with knowledge of the negotiations, just as the United States deploys a vast naval force near the Iranian coast ahead of possible strikes on the Islamic Republic.
February 24, 2026
Total Views: 1348
Get The Industry’s Go-To News
Subscribe to gCaptain Daily and stay informed with the latest global maritime and offshore news
— just like 107,062 professionals
Secure Your Spot
on the gCaptain Crew
Stay informed with the latest maritime and offshore news, delivered daily straight to your inbox
— trusted by our 107,062 members
Your Gateway to the Maritime World!
Essential news coupled with the finest maritime content sourced from across the globe.