Atomarine builds standardized data center barges powered by nuclear ships and assembled on a single manufacturing line. Its offshore siting avoids interconnection queues and competition with towns for water and electricity, while using seawater cooling instead of an evaporative system.
Atomarine, a Y Combinator-backed startup, is developing offshore data centers powered by nuclear energy. It has secured partnerships across offshore barge builders and multiple small modular reactor (SMR) developers; its first gas-powered data center is expected to launch in 2028.
Atomarine is designing floating, modular data-centre barges paired with standalone power-delivery ships for off-grid operation at sea. The vessels are planned to anchor roughly 10–12 nautical miles offshore. Its first pilot is targeted for 2028 and is planned to run on natural gas, with a transition to compact marine nuclear reactors as they mature.
