| Code figure | ||
|---|---|---|
| 0 | Ship in open water with floating ice in sight | |
| 1 | Ship in easily penetrable ice; conditions improving | |
| 2 | Ship in easily penetrable ice; conditions not changing | |
| 3 | Ship in easily penetrable ice; conditions worsening | |
| 4 | Ship in ice difficult to penetrate; conditions improving | |
| 5 | Ship in ice difficult to penetrate; conditions not changing Ship in ice | |
| 6 | Ice forming and floes freezing together | Ship in ice difficult to penetrate and conditions worsening |
| 7 | Ice under slight pressure | |
| 8 | Ice under moderate or severe pressure | |
| 9 | Ship beset | |
| / | Unable to report, because of darkness or lack of visibility | |