NEW ORLEANS--(BUSINESS WIRE)--April 21, 2004--Hornbeck Offshore Services, Inc. announced today that its first quarter 2004 earnings release will be issued before the market opens on Thursday, May 6, 2004.

The Company will hold a conference call to discuss these results at 9:00 a.m. (Central Time) on Thursday, May 6, 2004. To participate in the call, callers in the United States/Canada can dial toll-free (800) 642-9816 and international callers can dial (706) 679-3206. The conference ID for all callers is 7003243. In addition, a live audio webcast of the call will be available on the "IR Home" page under the "Investors" section of the Company's website.

An archived version of the call will be available for replay beginning at 12:00 noon (Central Time) Thursday, May 6, 2004 and ending at midnight Thursday, May 13, 2004. To access the replay, the toll-free number for callers in the United States is (800) 642-1687 while the number for international callers is (706) 645-9291. The conference ID for all callers is 7003243. An archived version of the audio webcast will be available upon demand at the Company's website for a period of 30 days after the call.

Hornbeck Offshore Services, Inc. is a leading provider of technologically advanced, new generation offshore supply vessels in the U.S. Gulf of Mexico and select international markets, and is a leading transporter of petroleum products through its fleet of ocean-going tugs and tank barges in the northeastern U.S. and in Puerto Rico. Additional Company information is available at its website at www.hornbeckoffshore.com under the captions "News" and "Investors."

Forward-Looking Statements

This news release contains forward-looking statements, including, in particular, statements about Hornbeck Offshore's plans and intentions. These have been based on the Company's current assumptions, expectations and projections about future events. Although the Company believes that the expectations reflected in these forward-looking statements are reasonable, the Company can give no assurance that the expectations will prove to be correct.

    CONTACT: Hornbeck Offshore Services, Inc.
             Todd Hornbeck, 985-727-6800
             or
             Jim Harp, 985-727-6802

    SOURCE: Hornbeck Offshore Services, Inc.