BOUND4BLUE
Rigid sails technologies for vessels
Santa Cruz de Bezana · Founded 2014 · $73.2M raised
- Headquarters
- Santa Cruz de Bezana
- Founded
- 2014
- Business Model
- B2B
- Website
- bound4blue.com
- Total Funding
- $73.2M
- Last Round
- $44.0M Series BDec 2025
- Rounds
- 4
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
bound4blue develops the eSAIL, a rigid wind-propulsion sail system that co-propels cargo and passenger ships to cut fuel costs and emissions. Since its first prototype installation in 2019, the company has equipped vessels for shipowners including Louis Dreyfus, Marubeni, Amasus, and Eastern Pacific Shipping, and raised a €22.4M Series A round in 2023 followed by a $44M round in December 2025. bound4blue is headquartered in Cantabria, Spain, with additional offices in Barcelona and Singapore.
Summary
BOUND4BLUE is a Clean Energy company based in Santa Cruz de Bezana, founded in 2014. It has raised $73.2M in total across 4 rounds, most recently a $44.0M Series B round in Dec 2025. Investors include Octave Fund, Katapult Ocean and Shift4Good.
Tech & App Stack
4 technologies & apps tracked
Every product and vendor across these categories, with where each signal came from.
Create a free account with 25 free credits every month, no card needed, to unlock the full tech & app stack, funding history, and valuations.
Funding History
Dec 2025
Sign up to see all 4 events
Funding: Venture Round through Series B. Amounts, valuations, and investors where available.
Investors
Similar Companies
AI infrastructure company building renewable-powered data centers and cloud compute optimized for...
Northvolt is a European battery manufacturer on a mission to deliver sustainable lithium-ion batt...
Saronic provides naval and maritime forces with intelligent Autonomous Surface Vessels at scale, ...
Home battery and energy company that provides distributed power storage to reinforce the electric...
Appears in
Your company? Embed this profile
Add the live badge to your site — it stays current as your funding data updates.
<a href="https://indexed.vc/companies/bound4blue"><img src="https://indexed.vc/api/badge/company/bound4blue" alt="BOUND4BLUE on Indexed.vc" width="260" height="76" /></a>