Actually Flowers were safer in those conditions that most destroyers. Nicholas Monsarrat said they would "roll on wet grass", but the short tubby design meant that they would ride up and down the swells that larger, sleeker ships would plow through.
According to this site, they never lost a single sailor due to heavy seas.
http://cdrsalamander.blogspot.com/20...friday_12.html
I don't know of any Flower encountering the type of typhoon that sank three American destroyers
http://www.history.navy.mil/faqs/faq102-4.htm , so I can't say how they would have fared in that weather, but they were still good wet-weather ships despite appearances to the contrary. By the way, that particular storm was the basis for the incident in Herman Wouk's book
The Caine Mutiny, and the film of the same name.