Ice class

As an ice-class classification of Eisfestigkeit of ships is called, which are designed for ice-covered waters and therefore have an ice-strengthened.

Number and classification of ice classes differ depending on the country. The ice class of the classification societies be equated with each corresponding national ice classes.

In different countries, which rely on a year-round supply by vessels be divided in accordance with the national ice-class port and pilotage dues. This will give the owners eisverstärkter ships in the summer to compensate for the higher construction costs and reduced capacity.

  • 2.1 IACS Polar Class

National ice classes

Norway, Sweden, Finland

Russia

  • Eisbrecher9 ice thickness up to 4.0 m (winter / spring ) or unlimited in summer / autumn ( shaft power at least 48,000 kW)
  • Eisbrecher8 ice thickness up to 3.0 m (winter / spring ) or unlimited in summer / autumn ( shaft power at least 22,000 kW)
  • Eisbrecher7 ice thickness up to 2.0 m (winter / spring ) and up to 2.5 m (summer / autumn) ( shaft power at least 11,000 kW)
  • Eisbrecher6 ice thickness up to 1.5 m (limited) or to 1.0 m ( Dauereisbrechen )
  • Arc9 ice thickness up to 3.5 m (winter / spring ) and up to 4.0 m (summer / fall)
  • ARC8 ice thickness up to 2.1 m (winter / spring ) and up to 3.1 m (summer / fall)
  • ARC7 (formerly ULA ) ice thickness to 1.4 m (winter / spring ) and 1.7 m ( summer / fall )
  • Arc6 ice thickness up to 1.1 m (winter / spring ) and up to 1.3 m (summer / winter)
  • Arc5 (formerly UL) ice thickness up to 0.8 m (winter / spring ) or to 1.0 m (summer / fall)
  • ARC4 (formerly L1) ice thickness up to 0.6 m (winter / spring ) or to 0.8 m (summer / fall)
  • Ice3 (formerly L2) ice thickness up to 0.7 m
  • Ice2 (formerly L3) ice thickness to 0.55 m
  • Ice1 (formerly L4) ice thickness up to 0,4 m
  • LL1 ice thickness over 2.0 m ( about 47 807 kW shaft power )
  • LL2 ice thickness over 2.0 m ( shaft power 22065-47807 kW)
  • LL3 ice thickness over 1.5 m ( shaft power 11032-22065 kW)
  • LL4 ice thickness over 1.0 m ( shaft power under 11,032 kW)

USA

  • A3 ice thickness about 1 m
  • A2 ice thickness up to 1 m
  • A1 ice thickness up to 0.6 m
  • A0 ice thickness up to 0.3 m

Germany (Germanischer Lloyd)

  • E4 ( Finnish- Swedish ice class corresponding 1A Super)
  • E3 ( Finnish- Swedish ice class corresponding 1A )
  • E2 ( Finnish- Swedish ice class corresponding: 1B )
  • E1 ( Finnish- Swedish ice class corresponding: 1C )
  • E ( Finnish- Swedish ice class corresponding: II or III)

Polar classes

Published in 2006, the International Association of Classification Societies (IACS ), the umbrella organization design for the global class PC 1 to PC 7 These are intended for permanent operating in Arctic waters ships and icebreakers. Therefore, they go in their claims far beyond the ice classes also. The highest German class E4 corresponds approximately to PC 6 The higher classes are thus more comparable to the Russian icebreaker classes.

IACS Polar Class

  • PC 1 Year-round driving in all Polar waters
  • PC 2 Year-round ride in moderate multi-year ice
  • PC 3 Year-round ride in a two-year multi-year ice with inclusions
  • PC 4 Year-round ride in thick -year ice with older inclusions
  • PC 5 ​​Year-round ride in mid -year ice with older inclusions
  • PC 6 summer trip in mid -year ice with older inclusions (equivalent to E4)
  • PC 7 summer tour in thin one-year ice with older inclusions (equivalent to E3)

Swell

  • Maritime
Classification society Loviisa
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