Hercules Sub LLC

Hornbeck is a leading provider of marine transportation services supporting a range of diversified offshore end-markets including oilfield specialty services and drilling support, military support services, renewable energy development and other non-oilfield service offerings, such as HADR and aerospace support services. We own a fleet of 74 offshore vessels comprised of 15 MPSVs, two of which are under construction, and 59 OSVs. In addition, we provide ongoing operation and maintenance of four highly specialized OSVs (which we previously developed, constructed, and sold to the U.S. Navy) via a long-term O&M contract. Since our founding nearly 30 years ago, we have focused on providing innovative, technologically advanced marine solutions to meet the evolving needs of our customers across our core geographic regions spanning the United States and Latin America. Our team brings substantial industry expertise built through decades of maritime-related experience and has leveraged that knowledge to amass what we believe is one of the largest, most capable and highest specification fleets of OSVs and MPSVs in the offshore vessel industry.

1. RW filingSep 1, 2026
2. S-1/A filingJan 13, 2026
3. S-1/A filingNov 14, 2025
4. S-1/A filingOct 10, 2024
5. S-1/A filingSep 23, 2024