AIS navigational status
AIS navigational status 13: Reserved for future use
Unassigned. What status 13 means, what speed and track should go with it, and how often it is simply wrong.
What status 13 means
Code 13 has no assigned meaning. It is held for future use.
What should go with it
Not meaningful.
Navigational status is entered by hand on the bridge; speed, course and position come from a satellite receiver. Read the status as testimony and the rest as measurement. Where they agree you have learned something. Where they disagree, the measurement is usually right.
How it goes wrong
A vessel sending 13 has a non-standard or faulty configuration. The value tells you nothing about its state.
All sixteen codes
| Code | Meaning |
|---|---|
| 0 | Under way using engine |
| 1 | At anchor |
| 2 | Not under command |
| 3 | Restricted manoeuvrability |
| 4 | Constrained by her draught |
| 5 | Moored |
| 6 | Aground |
| 7 | Engaged in fishing |
| 8 | Under way sailing |
| 9 | Reserved for future amendment (HSC) |
| 10 | Reserved for future amendment (WIG) |
| 11 | Power-driven vessel towing astern |
| 12 | Power-driven vessel pushing ahead or towing alongside |
| 13 | Reserved for future use |
| 14 | AIS-SART, MOB-AIS or EPIRB-AIS active |
| 15 | Undefined (default) |
For the field as a whole — and how this site handles it — read AIS navigational status codes, all sixteen.