The International Ice Charting Working Group (IICWG) was formed in October 1999 to promote cooperation between the world's ice centers on all matters concerning sea ice and icebergs.^[1]

• Canadian Ice Service
• Danish Meteorological Institute
• Finnish Ice Service
• Federal Maritime and Hydrographic Agency of Germany
• Icelandic Meteorological Office
• Hydrographical Department, Maritime Safety Agency, Japan
• Norwegian Meteorological Institute
• Russian Federation Arctic and Antarctic Research Institute
• Swedish Meteorological and Hydrological Institute
• United States National Ice Center
• U.S. Coast Guard International Ice Patrol – North Atlantic Iceberg Detection and Forecasting

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