From: user@example.net   
      
   On 2/11/2026 4:04 PM, john larkin wrote:   
      
   >> Large reciprocating steam engines like you might have seen for the   
   >> Titanic's side propellers were started by little 25 hp put-putters,   
   >> there's a video of the process on YouTube (not of the Titanic, obviously)   
   >>   
   >>    
   >   
   > I heard that the engine room pics in the Titanic movie were filmed on   
   > the   
   >   
   > https://ssjeremiahobrien.org/?v=0b3b97fa6688   
   >   
   > which is one of the few Liberty ships still running.   
   >   
   > It's old and creaky so they run something crazy like 150 PSI steam   
   > pressure.   
   >   
   > I think the Titanic was a turbine.   
   >   
   >   
   >   
   > John Larkin   
   > Highland Tech Glen Canyon Design Center   
   > Lunatic Fringe Electronics   
      
   It had both! 3 propellers, the port and starboard powered by triple   
   expansion steam engines, and then the exhaust from those fed a turbine   
   to power the center propeller at higher speeds. Port and starboard   
   engines only for maneuvering as the turbine couldn't go in reverse.   
      
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