Maritime fusion

Fact sheet

• Founded in 2024↗ Maritime Fusion — Company Profile | The Company Check↗ Maritime Fusion 2026 Company Profile↗ Maritime Fusion: Fusion reactors for ships | Y Combinator↗ Maritime Fusion
• HQ in San Francisco, California, USA↗ Hard Tech Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2026 | Y Combinator↗ Maritime Fusion — Company Profile | The Company Check↗ Maritime Fusion 2026 Company Profile↗ Maritime Fusion: Fusion reactors for ships | Y Combinator↗ Maritime Fusion
• Total funding approximately $5M–$6M↗ Maritime Fusion — Company Profile | The Company Check↗ Maritime Fusion 2026 Company Profile↗ Maritime Fusion: Fusion reactors for ships | Y Combinator↗ Maritime Fusion
• Key technology: HTS tokamak fusion reactors↗ Maritime Fusion — Company Profile | The Company Check↗ Maritime Fusion 2026 Company Profile↗ Maritime Fusion: Fusion reactors for ships | Y Combinator↗ Maritime Fusion
• Notable partners/investors: Y Combinator, Trucks Venture Capital, Paul Graham, Alumni Ventures, Aera VC↗ Hard Tech Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2026 | Y Combinator↗ Maritime Fusion — Company Profile | The Company Check↗ Maritime Fusion 2026 Company Profile↗ Maritime Fusion: Fusion reactors for ships | Y Combinator↗ Maritime Fusion
• YC batch: W2025↗ Hard Tech Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2026 | Y Combinator
• Employee count: approximately 6↗ Hard Tech Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2026 | Y Combinator
• Commercializing HTS cable technology (SHIELD HTS cables) for power distribution as a near-term revenue path alongside reactor development↗ Hard Tech Startups funded by Y Combinator (YC) in the San Francisco Bay Area 2026 | Y Combinator

Connections

• Fusion Industry Association — Industry body whose annual Global Fusion Industry report tracks the broader funding landscape that includes Maritime Fusion as one of 56 covered fusion companies.↗ Fusion Industry Attracts Record Annual Funding of $4.48bn, Raising Total to $14.24bn - Fusion Industry Association
• Thea Energy — Competing HTS magnet developer awarded ARPA-E SCALEUP Ready funding to establish a U.S. production line for modular HTS magnets, a technology area directly relevant to Maritime Fusion's SHIELD HTS cables and Yinsen reactor.↗ Fusion Industry Attracts Record Annual Funding of $4.48bn, Raising Total to $14.24bn - Fusion Industry Association

Recent developments

• Maritime Fusion is listed on Y Combinator's directory as an active W2025 batch company with 6 employees, confirming its San Francisco headquarters and its focus on fusion reactors for ships and off-grid energy markets, while also noting it is commercializing HTS cable technology for power distribution.

  Read more ↗ycombinator.com17 Jul

Links