| Code figure | |||
|---|---|---|---|
| 0 | Ship in open water with floating ice in sight | ||
| 1 | Ship in easily penetrable ice; conditions improving | Ship in ice | |
| 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 | ||
| 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 | ||