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Doug-
  that explains the confusion. A "wiper" wipes up the oil, a 
"whipper" sounds like someone hired to whip the ends of lines. Or, 
misbehaving crew.

 On LED lights: Great for commercial vessels and boats that will be running a 
lot at night, where regular changing of the bulbs is an issue. Most sailboats 
change light bulbs every 5+ years, and the costs of LEDs make them still 
uneconomical. The good bright ones can costs $3-5 each and need 20-40 to 
replace one 79 cent tungsten bulb. (To get the same wide beam angle both 
horizontally and vertically.)

 But the price of LED's and LED arrays keeps dropping.

   

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