[C320-list] What is this?

[T. Scott Thompson]

I found some bits of weathered plastic on the foredeck on the first 
visit after my boat was launched this year.  I was not present for the 
launch itself.  A picture can be found at

 http://www.catalina320.com/gallery/album37/IMG_2867

The color in the photo is distorted a bit.  The pieces are actually 
white.  One piece looks like it broke off the end of a tubular piece.  
The other is flat, but edges are broken in a way that suggests it was 
the end cap of the same tube.

I'm hoping its not from my boat but that is almost certainly wishful 
thinking.  Part of my furling gear maybe?  I have no good way to get aloft.