IMO fairway closed. Specified in SN/Circ.236 Annex 2, page 4, Application 3. Also defined in IALA Guidelines on AIS, Vol 1, Part 1, Ed. 1.3. Guildeline No 1028. This message should be used to inform ships, in particular to give guidance to large vessels about temporary closed fairways or sections in ports. Attributes: broadcast, shore station transmitting, no acknowledgement.
| Name | NumberOfBits | ArrayLength | Type | Units | Description |
|---|---|---|---|---|---|
| MessageID | 6 | uint | AIS message number. Must be 8 | ||
| RepeatIndicator | 2 | uint | Indicated how many times a message has been repeated 0: default 3: do not repeat any more |
||
| UserID | 30 | uint | MMSI number of transmitter broadcasting the message | ||
| Spare | 2 | uint | Reserved for definition by a regional authority. | ||
| dac | 10 | uint | Designated Area Code - part 1 of the IAI | ||
| fid | 6 | uint | Functional Identifier - part 2 of the IAI | ||
| reason | 6 | 20 | aisstr6 | Reason for closing | |
| from | 6 | 20 | aisstr6 | Location of closing from | |
| to | 6 | 20 | aisstr6 | Location of closing To | |
| radius | 10 | uint | See unit field | Extention of closed area | |
| unit | 2 | uint | Unit of extension value for range field 0: m 1: km 2: nm 3: cbl |
||
| closingday | 5 | uint | Closing from day | ||
| closingmonth | 4 | uint | Closing from month | ||
| fromhour | 5 | uint | From LT hour (appr) | ||
| frommin | 6 | uint | From LT minute (appr) | ||
| today | 5 | uint | To day | ||
| tomonth | 4 | uint | To month | ||
| tohour | 5 | uint | To LT hour (appr) | ||
| tomin | 6 | uint | To LT minute (appr) | ||
| spare2 | 4 | uint | Padding out the slot |