Ocean-deployed sensors, including seabed-mounted profiling systems, play a pivotal role in national security, the study of marine environments, and climate monitoring. These devices measure critical data such as water temperature, salinity, and flow patterns. Traditionally powered by batteries, these systems face limitations due to the finite energy densities of batteries, leading to operational constraints and the need for periodic maintenance.

Dr. Leonard Tender, the program manager for BLUE, highlighted the innovative approach of the initiative. "It is our hypothesis that the energy requirements of many ocean-deployed systems can be met by developing an onboard device that converts marine biomass into simple fuels, which are then converted into operational power," said Tender. This approach seeks to provide a persistent, sustainable, and environmentally friendly power supply to remote sensor systems, potentially offering ultralong endurance and high payload capacity.

The 30-month BLUE program will kick off with performers focusing on the characterization of microscopic marine biomass that can be utilized to generate electrical power. The initiative will also delve into identifying key environmental features to best meet program goals and leveraging biology to develop the process for converting the input materials to electrical power. Strategies for the capture and mass transport of biomass through conversion to enable up to one year of continuous power generation will be developed. A comprehensive ecological and environmental impact analysis will be conducted to ensure the system's safety.

Ensuring the project aligns with ethical, legal, and societal implications is also a priority for DARPA. BLUE performers will engage with U.S. government and defense stakeholders, as well as appropriate regulatory authorities, to ensure safety and efficacy. "Achieving battery-level power persistently and while fully submerged would be a game changer," Tender added, emphasizing the program's potential impact.

A Broad Agency Announcement solicitation with all program details and instructions for submitting proposals is currently available on SAM.gov. This announcement invites interested parties to contribute to a program that stands to revolutionize energy solutions for marine applications, highlighting DARPA's commitment to innovation and environmental sustainability.

The BLUE program's success could significantly enhance the capabilities and endurance of ocean-deployed sensors, marking a significant advancement in the fields of national security, marine science, and environmental monitoring. By harnessing the power of marine biomass, DARPA is not only addressing the energy limitations of current marine sensors but also paving the way for a future where sustainable energy sources are integral to technological advancement and environmental stewardship.

Related Links
Defense Advanced Research Projects Agency
Naval Warfare in the 21st Century