Harvey Gulf International Marine, LLC and Abdon Callais Offshore, LLC (ACO) have executed a definitive agreement whereby Harvey Gulf is to purchase substantially all of ACO’s assets and business. Purchase includes 48 offshore supply vessels (OSVs), of which four are currently under construction. With its roots in the Callais family tracing back to 1945 and under the later leadership of Harold J. Callais followed by his sons, ACO has long been recognized in the industry as a high quality marine transportation company providing multiple sized…