What Ways that the battleship building industry does not fit the charatsics of perfect competion?

The battleship building industry does not fit the characteristics of perfect competition due to high entry barriers, such as significant capital requirements and advanced technological expertise needed for large-scale shipbuilding. Additionally, there are only a few dominant firms in the industry, leading to oligopolistic behavior rather than a large number of small competitors. Furthermore, products in this industry are highly differentiated, as each battleship is customized to meet specific military requirements, contradicting the homogeneity assumption of perfect competition. Lastly, there is substantial government involvement and regulation, further deviating from the ideal of a perfectly competitive market.