| Title | Msg | DAC | FI | Version | #slots (max) | State | Registrant | Permitted as from | Not to be used after |
|---|---|---|---|---|---|---|---|---|---|
| Water Flow Message (Seaway) | 6 | 366 | 1 | 5 | In force | Saint Lawrence Seaway Development Corporation | |||
| Weather Station Message | 6 | 366 | 1 | 5 | In force | Saint Lawrence Seaway Development Corporation | 09/03/2002 | ||
| Lockage Order Message (Seaway) | 6 | 366 | 2 | 5 | In force | Saint Lawrence Seaway Development Corporation | 09/03/2002 | ||
| Estimated Lock Times Message (Seaway) | 6 | 366 | 2 | 3 | In force | Saint Lawrence Seaway Development Corporation | 09/03/2002 | ||
| Version Message (Seaway) | 6 | 366 | 32 | 1 | In force | Saint Lawrence Seaway Development Corporation | 09/03/2002 | ||
| Passenger and Crew Count | 6 | 367 | 16 | 1 | Draft | USCG RDC | |||
| Collision alarm | 6 | 421 | 16 | 1 | Testing | Sena and Vans Co., Ltd | |||
| Text telegram using 6-bit ASCII | 8 | 1 | 0 | 5 | Replaced | ITU-R.M.1371-1 | 01/01/1998 | 31/05/2007 | |
| Text using 6-bit ASCII | 8 | 1 | 0 | 5 | In force | ITU-R.M.1371-3 | 01/06/2007 | ||
| Metreorological and hydrological data | 8 | 1 | 11 | 2 | Deprecated | IMO Circ. 236 | 16/05/2004 | 01/01/2013 | |
| Fairway closed | 8 | 1 | 13 | 3 | Deprecated | IMO Circ. 236 | 17/05/2004 | 01/01/2013 | |
| Extended ship static and voyage related data | 8 | 1 | 15 | 1 | Deprecated | IMO Circ. 236 | 19/05/2004 | 01/01/2013 | |
| VTS targets (targets derived by means other than AIS) | 8 | 1 | 16 | 1 | In force | ITU-R.M.1371-1 | 01/01/1998 | ||
| Pseudo-AIS targets | 8 | 1 | 17 | 3 | Deprecated | IMO Circ. 236 | 19/05/2004 | 01/01/2013 | |
| VTS-generated/Synthetic targets | 8 | 1 | 17 | 3 | In force | IMO Circ. 289 | 01/06/2010 | ||
| Advice of waypoints (AWP) and/or route plan of VTS | 8 | 1 | 18 | 5 | In force | ITU-R.M.1371-1 | 01/01/1998 | ||
| Marine traffic signal | 8 | 1 | 19 | 2 | In force | IMO Circ. 289 | 01/06/2010 | ||
| Weather observation report from ship | 8 | 1 | 21 | 2 | In force | IMO Circ. 289 | 01/06/2010 | ||
| Area notice | 8 | 1 | 22 | 5 | In force | IMO Circ. 289 | 04/03/2011 | ||
| Extended ship static and voyage-related data | 8 | 1 | 24 | 2 | In force | IMO Circ. 289 | 01/06/2010 |