The Gulf of Odesa, or Odesa Bay, is a part of the Black Sea between North Odesa Cape in the north and Cape Velykyi Fontan in the south.
Wikipedia https://en.wikipedia.org/wiki/Gulf_of_Odesa
Official Website https://books.google.com.ua/books?id=mxZ6OkQzuWkC&pg=PA5665&dq=Gulf%20of%20Odesa&hl=uk&sa=X&ved=0ahUKEwjB8P_jnfzfAhUC_SwKHXtzCnMQ6AEIKjAA#v=onepage&q=Gulf of Odesa&f=false
Coordinates 46°31'38.77" N 30°46'8.478" E