titanic-whitestarships.com

1aG8X TIL The Titanic had an older sister ship called "Olympic", which became the only civilian ship to sink an enemy warship during WWI, when it turned around and rammed a German submarine attempting to attack it. The sub was gashed open by The Olympic's propellor.
ZEXp TIL The Titanic had a much more successful sister ship called the “Olympic”. It was the only merchant ship to sink an enemy warship during World War I, after it turned around and rammed a submarine that had tried to torpedo it. The sub sank after it was gashed open by one of the Olympic’s propellers
DDBV TIL that a nurse that worked for White Star Lines, survived three maritime disasters including the sinking of the Titantic.