The copy of the book that I have was copyrighted in 1965. It seems to be very historically accurate as to ship types, navigation capabilities, and boat management. It is a fictional tale of Elissa and the founding of Carthage, based on limited historical knowledge where the book personalities and actions of the characters give a prosaic texture of the probable lifestyles of actual people and events. For those only reading it as a story, and not looking to use it as a projection of history, then the rating of the book would be lowered to a probable 3 star.
I was most interested in the capabilities, rigging, and vessel size of the Phoenician ships as compared to the Greek biremes. The information seems to have held up well over the last 45 years of nautical archeology.