This sound was created in Audacity using a 9hz tremolo to simulate the sound of a 3 bladed propeller spinning 3 times per second. It sounds almost like a helicopter and I can see why the vibrations from the wakes and resonance would have been a problem. During Lusitania’s sea trials it was found that these vibrations were so severe as to make the stern uninhabitable for passengers and crew. Hence the shipbuilders had to completely gut the second class areas they had just built, fit strengthening braces, and then put it all back together again!
This sound was created in Audacity using a 9hz tremolo to simulate the sound of a 3 bladed propeller spinning 3 times per second. It sounds almost like a helicopter and I can see why the vibrations from the wakes and resonance would have been a problem. During Lusitania’s sea trials it was found that these vibrations were so severe as to make the stern uninhabitable for passengers and crew. Hence the shipbuilders had to completely gut the second class areas they had just built, fit strengthening braces, and then put it all back together again!