Hornbeck Offshore to Acquire Superior Achiever

Hornbeck Offshore Services, Inc. announced today that it has entered into a definitive asset purchase agreement with Superior Offshore International, Inc., a subsea construction and commercial diving services company (‘Superior’), to acquire the Superior Achiever, a T-22 class DP-3 new generation multi-purpose support vessel (‘MPSV’) and related owner-furnished equipment, currently under construction at Merwede Shipyard in Holland with an anticipated fourth quarter 2008 delivery. Merwede Shipyard is also building for Hornbeck the HOS Iron Horse, a T-22 class DP-3 MPSV of the same