Military strategists, government officials and the Minister of National Defence would probably be in a better position than I to answer this question. That said, given that Canada is the second-largest country in the world and is bordered by three oceans, the fact that we need ships to protect and defend our coasts seems obvious. However, do we need the current or proposed combination? Military experts are in a better position to answer that question.
On October 31st, 2022. See this statement in context.