NEW ORLEANS, July 20 /PRNewswire-FirstCall/ -- Hornbeck Offshore Services, Inc. (NYSE: HOS) announced today that it will release its second quarter 2004 results at approximately 6:00 a.m. Eastern on Wednesday, August 4, 2004. In conjunction with the release, the Company has scheduled a conference call, which will be broadcast live over the Internet, on Wednesday, August 4, 2004 at 10:00 a.m. Eastern (9:00 a.m. Central).

     What:   Hornbeck Offshore Second Quarter 2004 Earnings Conference Call
     When:   Wednesday, August 4, 2004 at 10:00 a.m. Eastern
             (9:00 a.m. Central)
     How:    Live via phone -- By dialing (303) 205-0066 and asking for the
             Hornbeck Offshore call at least 10 minutes prior to the start
             time, or Live over the Internet -- By logging onto the web at the
             address below
     Where:  http://www.hornbeckoffshore.com , on the "IR Home" page of the
             "Investors" section of the Company's website

For those who cannot listen to the live call, a telephonic replay will be available through August 11, 2004 and may be accessed by calling (303) 590-3000 and using the pass code 11003034. Also, an archive of the webcast will be available after the call for a period of 30 days on the "IR Home" page under the "Investors" section of the Company's website.

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, primarily in the northeastern U.S. and in Puerto Rico.

Contacts: Todd Hornbeck, CEO
Jim Harp, CFO
Hornbeck Offshore Services
985-727-6802

SOURCE Hornbeck Offshore Services, Inc.