Mining the Ocean Floor: New Subsea Technology Aims to Secure Critical Minerals for Electric Vehicles
New York, Thursday, 19 March 2026.
Deep Sea Rare Minerals is advancing a subsea system to quietly harvest 1.5 million metric tons of critical minerals annually from 6,000 meters deep, fueling the electric vehicle transition.
Engineering a Deep-Sea Frontier
Deep Sea Rare Minerals, Inc. (DSRM), a United States-based holding company focused on subsea mineral resource opportunities, has officially completed a pre-front-end engineering and design (pre-FEED) study for a potential polymetallic nodule (PMN) collection system [1][2]. Announced between March 18 and March 19, 2026, this milestone required a substantial capital investment and the dedication of more than 1,000 engineering hours [1][2]. Polymetallic nodules are potato-sized rock concretions found on the ocean floor that contain high concentrations of critical minerals like nickel, cobalt, and manganese, which are essential for manufacturing electric vehicle batteries [GPT].
Technical Specifications and Environmental Safeguards
The preliminary design targets an ambitious collection rate of approximately 1.0 to 1.5 million wet metric tons of polymetallic nodules per year, representing a median target of 1.25 million tons annually [1][2]. To operate at these extreme depths, DSRM selected Soil Machine Dynamics Ltd. (SMD) to support the design of a subsea collector system rated for depths of up to 6,000 meters [1][2]. Surface operations will rely on vessels measuring approximately 130 to 150 meters in length, averaging 140 meters [1][2]. For the vertical transport of the nodules from the seafloor to the surface, the company tapped Oil States International, Inc. (OSI), a firm that has been active in the seafloor-to-surface transport technology market since 2022 [1][2].
Strategic Next Steps and Commercial Viability
Following the successful conclusion of the pre-FEED study, DSRM plans to immediately advance to the next phase of engineering and design [1][2]. Over the next 90 to 120 days—projecting a completion window between roughly mid-June and mid-July 2026 [alert! ‘calculated based on a 90 to 120 day timeline starting from the March 18 and 19 announcements’]—the company will refine its system specifications, finalize manufacturing approaches, and develop concrete cost estimates [1][2].