Five icebreakers built for the Swedish and Finnish governments Maritime Administrations to keep the baltic sea transport lanes open and safe. Specifications 9500full load (tn) 104.60length (m) 23.80beam (m) 8draught (m) 19max speed (knots) 21700power (shp) Aircraft Typical Max Landing platform only. No hangar swedish air force SNIA AS332M1 Super Puma 01 swedish air force B-V hkp4a 01 swedish navy B-V hkp4b 01 Shipyards Aker Finnyards - 5 List of Ships Filter: AllFI - Finnish Navy .......... 2SE - swedish navy .......... 3 Hide Transfers Hide derivatives 1974--swedish navyAtleSBPR1975--swedish navyFrejSBPT1975--Finnish NavyUrhoOHMS1976--Finnish NavySisuOHMW1977--swedish navyYmerSDIA5 units Events 1974LaunchedLaunched Atle 1974LaunchedLaunched Frej 1974-octCommissionedCommissioned Atle 1975-mar-05CommissionedCommissioned Urho 1975-sepCommissionedCommissioned Frej 1976-jan-28CommissionedCommissioned Sisu 1976-sep-03LaunchedLaunched Ymer 1977-octCommissionedCommissioned Ymer