This is a list of icebreakers and other special icebreaking vessels (except cargo ships and tankers) capable of operating independently in ice-covered waters.
Ships known to be in service are presented in bold.
[1][2] The following icebreaking supply ships are operating or have operated in the Kazakh Caspian Sea oil fields: The following lists include icebreakers owned and/or operated by either governmental or commercial entities.
The following Russian-owned, -operated and/or -flagged icebreaking anchor handling tug supply vessels, platform supply vessels, standby vessels etc.
are or have been engaged primarily in offshore oil and gas projects: In addition, the following shallow-draught icebreaking offshore vessels operate in the Russian sector of the Caspian Sea oil fields: The following icebreakers and other icebreaking vessels are or have been in service with the Russian Navy, Russian Border Guard, and their predecessors: Three icebreaking anchor handling tug supply vessels were chartered by the Swedish Maritime Administration for escort icebreaking duties in the Baltic Sea until 2015.