George S. Zacharkow, chairman of Marine Office of America Corporation (MOAC), has announced the appointment of Edwin Cave as executive vice president and chief operating officer of the All American Marine Slip. Mr. Cave began his insurance career in 1956 in London when he joined the firm of Hobbs Savill & Company Ltd. He joined the MOAC organization in Canada in 1964 and held various positions in the Canadian operations until May of 1980, when he was elected vice president in charge of ocean marine underwriting in MOAC's home office in New York. The All American Marine Slip specializes in writing offshore energy related risks, and is managed by MOAC.