The Venta Maersk (VM) is a brand new container ship with a carrying capacity of 3,600 standard 20 ft. size (TEU) containers. With a length of 200 m and a beam of 36 m, it is quite a large vessel but nowhere near the really large container ships that can carry three to five times as many TEU.
What is novel and noteworthy is the fact that the Venta Maersk is the first container ship scheduled to traverse the Northern Sea Route; you can follow her voyage at the website MarineTraffic.com. Furthermore, the vessel has obviously been designed for operation in the Arctic by having a (Finnish-Swedish) "Class 1A" designation, meaning the vessel has certain structural fortifications and a hull that can plow through non-consolidated sea-ice of 1 m thickness.