Please answer the following question: Keiler - The Keiler is a new river icebreaker commissioned in December 2011 to serve as the flagship of Lauenburg'sWater and Shipping Authority fleet of ten icebreakers on the Elbe River.The vessel is 33.21 metres (109.0 ft) long and 8.45 metres (27.7 ft) wide.She will be staffed by a crew of four and has sleeping and dining accommodation for operations that take longer than a single shift.She is the first icebreaker built for the water authority in 24 years.In February of 2012 the upper reaches of the Elbe were beset by the worst ice jams since 1987.The jams were 20 kilometers long and upstream communities faced flooding as water built up behind the ice dams. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Mean Of Transportation