Grupo TMM, S.A. Announces Purchase of Seacor’s 40% Interest in Mexican Offshore Supply Joint Venture

FORT LAUDERDALE, FLORIDA and MEXICO CITY, MEXICO
March 6, 2006

FOR IMMEDIATE RELEASE – Grupo TMM, S.A. (NYSE: TMM and BMV: TMM A; “TMM”), and SEACOR Holdings Inc. (NYSE: CKH; “Seacor”) today announced that Grupo TMM purchased Seacor´s 40% interest in Marítima Mexicana, S.A. de C.V. (“Marmex”), a joint venture company dedicated to providing maritime offshore services in Mexico’s Gulf Coast.

Additionally, Grupo TMM purchased five offshore vessels owned by Seacor and has flagged them Mexican. These vessels are working under time charter contracts supporting offshore exploration and production activities in the Gulf of Mexico. The aggregate value of the transactions was approximately $57.0 million. Grupo TMM and Seacor intend to maintain good relations in pursuing future business opportunities in the offshore Mexican market.

Headquartered in Mexico City, TMM is a Latin American multimodal transportation company. Through its branch offices and network of subsidiary companies, TMM provides a dynamic combination of ocean and land transportation services. Visit TMM’s web site at www.grupotmm.com. The site offers Spanish/English language options.

SEACOR is a global provider of marine support and transportation service, primarily to the energy and chemical industries. SEACOR and its subsidiaries provide customers with a full suite of marine-related services including offshore services, U.S. coastwise shipping, inland river services, helicopter services, environmental services, and offshore and harbor towing services. SEACOR is uniquely focused on providing highly responsive local services, combined with the highest safety standards, innovative technology, modern efficient equipment, and dedicated, professional employees.