What feature of the Lusitania was considered her greatest defense against a submarine attack bur that the ship was unable to takw advantage of because of the fog?

The Lusitania was not only a luxury cruise liner but was also an armed/ merchant cruiser, equipped with military ammunitions, making it possible for her to fight or defend itself from any attack.

Explanation:

The ocean liner, Lusitania was a British passenger ship bound for Liverpool from New York. The cruise liner carries not only British passengers but also American nationals.

At the time of the journey, World War I was in motion but the US was still a neutral nation. But the zone of wars that were raging between Germany and her allies and Britain and her allies included the waters the Lusitania was to journey through. And ships and any boast traveling in the waters were attacked and torpedoed by German U-boats to try to stop or prevent any military attack.

So, although the cruise liner Lusitania was in truth a passenger liner, it was also equipped with machinery and military features if in need of any defense system. This made the liner safe from a submarine attack, for it can attack the submarine back. But at the same time, she was unable to make use of the facilities because of the fog covering the sea in the early hours of the day she was sunk by the German U-boat U-20 on 7 May 1915 near the south coast of Ireland.  

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pope john paul ii ( his real name is karol wojtyla) and lech walesa ( the leader of the solidarity movement ) were both born in poland.