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C21B

14 kmtravelled in 300 weekly listings

Its drift, week by week

Weekly positions from the US National Ice Center, 31 December 2020 to 24 September 2026.

  1. First listed

    31 December 2020, 64.99° S, 95.86° E

  2. Into 2021

    8 January 2021, 64.99° S, 95.86° E

  3. Into 2022

    7 January 2022, 64.98° S, 95.85° E

  4. Into 2023

    6 January 2023, 64.98° S, 95.86° E

  5. Into 2024

    4 January 2024, 64.99° S, 95.86° E

  6. Into 2025

    2 January 2025, 64.98° S, 95.84° E

  7. Into 2026

    2 January 2026, 64.98° S, 95.84° E

  8. Latest position

    24 September 2026, 64.98° S, 95.83° E

95° E100° E65° S20222023202420252026100 kmN
size on 31 December 2020
11 × 8 nm
size at its last listing
12 × 8 nm
latest position
64.98° S, 95.83° E

Iceberg C21B was at 65.0°S, 95.8°E on 24 September 2026, according to the US National Ice Center weekly list. Its listed size was about 12 by 8 nautical miles. It has been listed in 300 weekly positions since 31 December 2020, drifting about 14 km.

All 300 weekly positions
Weekly positions and sizes of iceberg C21B from the US National Ice Center list
DatePositionSize (nautical miles)
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E12 × 8
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65.0°S, 95.8°E11 × 8
65.0°S, 95.9°E12 × 8
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65.0°S, 95.9°E12 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
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65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
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65.0°S, 95.9°E11 × 8
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65.0°S, 95.9°E11 × 8
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65.0°S, 95.9°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
65.0°S, 95.8°E11 × 8
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65.0°S, 95.8°E11 × 8
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65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8
65.0°S, 95.9°E11 × 8

Download every position as CSV or GeoJSON from the research portal.

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Icebergs nearby this week

  • C24 about 18 km away, 57.9 km²
  • C30 about 30 km away, 75.1 km²
  • C31 about 46 km away, 73.1 km²
  • D15A about 658 km away, 3,037 km²
  • D34 about 665 km away, 166 km²
  • D15B about 681 km away, 611 km²

Every iceberg tracked this week

Iceberg positions and sizes: US National Ice Center. Adoption is symbolic. Adoptice is not affiliated with the US National Ice Center.