Hydrograph signs LOI with Seadar Technologies

Executive Summary

• Hydrograph Inc. and Seadar Technologies signed a Letter of Intent on September 19, 2025, to integrate Hydrograph’s graphene materials and coating technologies into Seadar’s subsea radar systems.
• The collaboration aims to enhance product performance for maritime defense and offshore energy markets by leveraging graphene’s properties for corrosion resistance, weight reduction, and structural strength.
• Specific applications include improving kevlar-reinforced survey lines, extending the life of Seadar Shield node boxes, and enhancing thermal conductivity for sensitive electronics.

Key Details

• Parties Involved: Hydrograph Inc. (graphene producer) and Seadar Technologies (subsea sensing/surveillance solutions).
• Agreement Type: Letter of Intent (LOI) signed on September 19, 2025.
• Core Objective: Integrate Hydrograph’s graphene materials into Seadar’s current and future undersea products to explore technical synergies.
• Target Markets: Maritime defense and offshore energy.
• Specific Technical Applications:
  • Survey Lines: Adding graphene to kevlar-reinforced survey lines to increase tensile strength, reduce weight, and improve handling.
  • Hardware Durability: Graphene coating to reduce corrosion and extend the lifespan of Seadar Shield node boxes and connectors.
  • Structural Components: Use of graphene composites to create lighter, stronger components capable of handling mechanical loads and subsea pressures.
  • Thermal Management: Improved thermal conductivity to dissipate heat and protect sensitive electronics.
• Company Backgrounds:
  • Hydrograph: Specializes in commercializing graphene via a controlled chamber explosion method for few-layered graphene production at scale. Products are engineered for harsh environments, focusing on weight reduction, strength, corrosion prevention, and energy efficiency.
  • Seadar Technologies: Developer of the "Seadar Shield," the world's first subsea intruder detection radar, providing detection, geolocation, and tracking of underwater metallic materials and electronic signatures for NATO alliance security.

Notable Quotes

• Kjirstin Breure, President and CEO of Hydrograph: "Graphene is an extremely versatile and durable substance and partnering with Seadar allows us to develop new applications that can deliver real-world benefits... Our collaboration will lead to new corrosion-resistant coatings and graphene-enhanced compounds that will demonstrate how sustainable material innovation can have a lasting impact for marine applications and pave the way for new uses in other industries."
• Carlos Fonts, CEO of Seadar Technologies: "Our partnership with Hydrograph marks a significant step forward for our company... Incorporating Hydrograph's graphene into Seadar systems will not only improve the performance and durability of our products, but will open the door for new advancements and applications of our technology."