Anchor chain is a classic jewellery chain design and the chain most people can describe with ease. It is characterised by uniformly sized repeating oval links which are arranged alternatively in a horizontal and then vertical orientation, traditionally with a vertical bar in the middle of each link. Because of the simplicity of its links it is one of the strongest types of jewellery chain and it is no surprise that it has the same design as the chains used to anchor large ships in port. This chain is also known as marine chain. Variations of this jewellery chain design include figarucci chain or flat anchor chain where the outer surfaces of the individual links are flattened off by diamond cutting, round anchor chain where the outer surfaces are slightly rounded and maritime chain where only every other link is an anchor link.