GAC Shipping has appointed Ana Silveira as its new Marketing Manager for Central & South America and Darren Martin as Senior Marketing Manager for North America with immediate effect. A graduate of the State University of New York Maritime College at Fort Schuyler, with a Bachelor degree in International Transportation and Trade, Silveira is fluent in Portuguese, Spanish and English. She joined GAC immediately after graduation, as a Hub Coordinator in Houston, responsible for monitoring port calls for hub customers such as Chevron, BG, Euronav and Tanker Pacific.