Final answer:
The detailed information provided does not list which ships warned the Titanic about icebergs, but historically, the RMS Carpathia, the SS Californian, and the SS Mesaba are known to have sent warnings. The provided content mainly discusses the sinking of the RMS Lusitania during World War I.
Step-by-step explanation:
The ships that warned the Titanic about icebergs specifically are not mentioned within the provided information. However, historically it is known that several ships sent ice warnings to the Titanic on the day of its sinking, including the RMS Carpathia, the SS Californian, and the SS Mesaba. The information given revolves around the sinking of the RMS Lusitania, which was a separate maritime disaster during World War I, where the German embassy had issued warnings implying the risks of traversing waters that were part of the war zone between Germany and Great Britain.