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shadow Hornbeck Offshore


2017 Senior Notes or 2017 Notes

8.000% senior notes due 2017.

2019 Convertible Senior Notes or 2019 Notes

1.500% convertible senior notes due 2019.

2020 Senior Notes or 2020 Notes

5.875% senior notes due 2020

2021 Senior Notes or 2012 Notes

5.000% senior notes due 2021.

2026 Convertible Senior Notes or 2026 Notes

1.625% convertible senior notes due 2026.


Anchor-handling towing supply


Financial Accounting Standards Board Accounting Standards Codification

Average Dayrate

When referring to OSVs or MPSVs, average revenue per day, which includes charter hire, crewing services and net brokerage revenues, based on the number of days during the period that the OSVs or MPSVs, as applicable, generated revenue; and, when referring to double-hulled tank barges, the average revenue per day, including time charters, brokerage revenue, revenues generated on a per-barrel-transported basis, demurrage, shipdocking and fuel surcharge revenue, based on the number of days during the period that the tank barges generated revenue. For purposes of tank barge brokerage arrangements, this calculation excludes that portion of revenue that is equal to the cost of in-chartering third-party equipment paid by customers.

Cabotage Laws

Laws pertaining to the privilege of operating vessels in the navigable waters of a nation.


Contract of affreightment

Coastwise Trade

The transportation of merchandise or passengers by water, or by land and water, between points in the United States, either directly or via a foreign port


When referring to OSVs, vessels that are at least 30 years old, are generally less than 200’ in length or carry less than 1,500 deadweight tons of cargo when originally built and primarily operate, when active, on the continental shelf


Clean petroleum products


A well drilled to a true vertical depth of 15,000’ or greater, regardless of whether the well was drilled in the shallow water of the Outer Continental Shelf or in the deepwater or ultra-deepwater


Offshore areas, generally 1,000’ to 5,000’ in depth

Deepwater Horizon Incident

The subsea blowout and resulting oil spill at the Macondo well site in the GoM in April 2010 and subsequent sinking of the Deepwater Horizon drilling rig


U.S. Department of the Interior and all its various sub-agencies, including effective October 1, 2011 the Bureau of Ocean Energy Management ("BOEM"), which handles offshore leasing, resource evaluation, review and administration of oil and gas exploration and development plans, renewable energy development, National Environmental Policy Act analysis and environmental studies, and the Bureau of Safety and Environmental Enforcement ("BSEE") which is responsible for the safety and enforcement functions of offshore oil and gas operations, including the development and enforcement of safety and environmental regulations, permitting of offshore exploration, development and production activities, inspections, offshore regulatory programs, oil spill response and newly formed training and environmental compliance programs; BOEM and BSEE being successor entities to the Bureau of Ocean Energy Management, Regulation and Enforcement ("BOEMRE"), which effective June 2010 was the successor entity to the Minerals Management Service

Domestic Public Company OSV Peer Group

Includes Gulfmark Offshore, Inc. (NYSE:GLF), SEACOR Holdings Inc. (NYSE:CKH) and Tidewater Inc. (NYSE:TDW)

DP-1, DP-2, DP-3

Various classifications of dynamic positioning systems on new generation vessels to automatically maintain a vessel's position and heading


Dirty petroleum products


Deadweight tons

Effective Dayrate

The average dayrate multiplied by the average utilization rate


U.S. Energy Information Administration


United States Environmental Protection Agency


On-vessel accommodations services, such as lodging, meals and office space


United States generally accepted accounting principles.


U.S. Gulf of Mexico

High-specification or High-spec

When referring to new generation OSVs, vessels with cargo-carrying capacity of greater than 2,500 DWT (i.e., 240 class OSV notations or higher), and dynamic-positioning systems with a DP-2 classification or higher; and, when referring to jack-up drilling rigs, rigs capable of working in 400-ft. of water depth or greater, with hook-load capacity of 2,000,000 lbs. or greater, with cantilever reach of 70-ft. or greater; and minimum quarters capacity of 150 berths or more and dynamic-positioning systems with a DP-2 classification or higher


The division of IHS Inc. focused on providing knowledge and independent analysis on energy markets, geopolitics, industry trends and strategy.


The division of IHS Inc. focused on providing data, information, and market intelligence to the offshore energy industry.


Inspection, repair and maintenance, also known as "IMR," or inspection, maintenance and repair, depending on regional preference

Jones Act

The U.S. cabotage law known as the Merchant Marine Act of 1920, as amended

Jones Act-Qualified

When referring to a vessel, a U.S.-flagged vessel qualified to engage in domestic coastwise trade under the Jones Act

Long-term Contract

A time charter of one year or longer in duration


The well site location in the deepwater GoM where the Deepwater Horizon incident occurred as well as such incident itself


A multi-purpose support vessel


The Marine Spill Response Corporation

New Generation

When referring to OSVs, modern, deepwater-capable vessels subject to the regulations promulgated under the International Convention on Tonnage Measurement of Ships, 1969, which was adopted by the United States and made effective for all U.S.-flagged vessels in 1992 and foreign-flagged equivalent vessels

OPA 90

The Oil Pollution Act of 1990


An offshore supply vessel, also known as a “PSV,” or platform supply vessel, depending on regional preference


Petroleos Mexicanos


Petroleo Brasileiro S.A.

Public company OSV peer group

SEACOR Holdings Inc. (NYSE:CKH), GulfMark Offshore, Inc. (NYSE:GLF), Tidewater Inc. (NYSE:TDW), Farstad Shipping (NO:FAR), Solstad Offshore (NO:SOFF), Deep Sea Supply (NO:DESSC), DOF ASA (NO:DOF), Siem Offshore (NO:SIOFF), Groupe Bourbon SA (GBB:FP), Havila Shipping ASA (NO:HAVI), Eidesvik Offshore (NO:EIOF) and/or Ezra Holdings Ltd (SI:EZRA)


A remotely operated vehicle


Ocean-going tugs and tank barges


Offshore areas, generally more than 5,000' in depth

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