The ultimate achievement in such a competition is to finish first in the overall order; that crew is said to be 'Head of the River'. This is only realistically possible for crews starting a bump race in the top 5 places. A more attainable goal for most crews, apart from moving up towards the headship, is to bump up a place (or more) on each of the four days. The crew is said to have "won its blades", or achieved "blades". Traditionally, members of such a crew can purchase a rowing oar in the crew colours and inscribed with the crews' names and the boats they bumped to hang on their wall. Conversely, crews that go down four places win a wooden spoon, achieving "spoons". The bottom crew at the bottom of the last division is known as the 'Tail of the River'. A "bumps chart" is a graphical representation of the week's results; each boat's fortunes can be traced as its line on the chart rises and falls.