Continental Shelf Associates, Inc. Holdings Overview

continental shelf associates, inc. earthContinental Shelf Associates, Inc. (CSA Group) is a multidisciplinary U.S. corporation established in 1970. Dedicated to the ocean industry worldwide, it services the offshore oil & gas, submarine telecom, and scientific markets as well as Federal, State, and local governments. The following are wholly owned subsidiaries under the CSA Group umbrella.

Our Subsidiaries

CSA International, Inc.

CSA-International-LogoCSA International, Inc. (CSA) CSA International, Inc. (CSA) specializes in marine sciences and services, with business lines focusing on the following industries:


Technology Systems Corporation

tsc-logo-thTechnology Systems Corporation (TSC) provides unparalleled marketing solutions for the ocean industry through two specialized trade magazines and three focused conference/exhibitions. In addition to publishing and conferences, TSC has an online store called Sea Catalog that offers hundreds of marine-related books and products for sale to the industry. 


Ocean Specialists, Inc.

osi-logo-thOcean Specialists, Inc. (OSI) provides services to clients in the ocean industry ranging from project consulting for development of offshore telecommunications systems and undersea technology to corporate management and marketing services. OSI’s clients range from oil and gas producers to telecommunications providers, as well as government and scientific interests.