While the Northern Fleet has traditionally emphasized the deployment of larger warships and submarines, new missile boats (of the Buyan/M and Karakurt classes) have temporarily been able to deploy into Northern Fleet waters utilizing Russian internal waterways. In 2020, the Buyan-M class corvette "Zelenyy Dol" and the Karakurt-class corvette "Odintsovo" trained and conducted trials in Arctic waters having deployed to northern waters via the internal waterways. The deployment illustrated the Russian capacity to reinforce the Northern Fleet with cruise missile-armed light units, potentially drawn from the Russian Navy's two other western fleets or from the Caspian Flotilla.