SS Andrea Doria at port in Italy; b-roll ocean liner in fog

In July 1956, the Andrea Doria left Genoa with 11,192 passengers, expecting a pleasant 10-day voyage. The ship had completed this journey 100 times without incident. However, eight days into the trip, the ship encountered dense fog, leading to a tragic event.

What metaphor is used to describe the fog encountered by the Doria?

What does the phrase 'Death rode the waves' imply about the situation on the Doria?