The Cutty Sark is a ship, and more especially, a Tea Clipper. She was built for speed; even in the past time was money. She was one of the fastest of this type of boat ever built, but like some many other things, her record breaking speed was soon overtaken by steamships.
One of the things I liked about the ship was its copper bottom - the underside of the ship was completely covered in copper to prevent rot and damage from marine creatures. This form of protection worked very well - in fact it became a byword for reliability! Today, we still talk of things being copper bottomed.
This sign also made me smile - talk about coals to Newcastle!