Seacocks

[JonnyBoats]

That odd little bronze thing beneath the sole

Is so vital to my boat for water control

The skin of my vessel, as thin as can be

Depends on this marvel to keep out the sea,

So open and close it and fondle it well

Or into your ship, very wet water may swell!

I found this at http://www.boatsurveyor.com/bronze_beauties.htm and thought it worth sharing. Enjoy.