Arthur B. Tickle Jr., chairman of the board and president of Arthur Tickle Engineering Works, a Brooklyn-based engineering firm specializing in all phases of marine repairs, has named Chris Clark as vice president and chief operating officer. The announcement was made by Girolama Corso, executive assistant to the chairman.

Mr. Clark, a 1965 graduate of the U.S. Merchant Marine Academy, was previously general manager of the Marine and Industrial Divisions of the company.