|
8 Estimated Lock Times Message (Seaway)
| Parameter |
Number of bits |
Description |
| Application ID |
16 |
DAC = 316 or 366; FI = 2; See Section 2.1 |
| Reserved |
2 |
|
| Message ID |
6 |
Message Identifier = 2 (00 0010 in binary) |
| Timetag |
20 |
Month, Day and Time of message, See Section 2.2 |
| Vessel Name |
90 |
15 character vessel name in 6 bit ASCII |
| Last Location |
42 |
7 character identifier of last location in 6 bit ASCII |
| Last ATA |
20 |
See Section 2.2 |
| First Lock |
42 |
7 character identifier of first lock in 6 bit ASCII |
| First Lock ETA |
20 |
See Section 2.2 |
| Second Lock |
42 |
7 character identifier of second lock in 6 bit ASCII |
| Second Lock ETA |
20 |
See Section 2.2 |
| Delay |
42 |
7 character identifier of the first lock which currently has
a vessel being delayed |
| Reserved |
4 |
|
| Total Number of Bits |
366 |
(3 Slots) |
|
Notes:
The Estimated Lock Time message is an addressed binary
message sent to individually targeted vessels. Once the Seaway AIS network receives
an acknowledgement from the intended vessel transponder (M.1371/A2-3.3.8.2.5 Message
7: Binary Acknowledge) indicating that the message has been received, no further
transmissions will be issued. In addition, any change to the estimated lock times
will result in the immediate transmission of the updated information.
8.1 Example: Estimated Lock Times Message
| Designated Area Code |
Function Id |
Res. |
Message Id |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
| 316 |
2 |
0 |
2 |
|
| Timetag |
・・・ |
| 0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
| May |
29th |
12 |
30 |
"M"・・・ |
|
| ・・・Vessel Name・・・ |
| 0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
1 |
0 |
| ・・・ |
"I" |
"L" |
"K" |
"Y"・・・ |
|
| ・・・Vessel Name・・・ |
| 0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・ |
"" |
"S" |
"T" |
"A" |
|
| ・・・Vessel Name・・・ |
| 0 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| ・・・ |
"R" |
"" |
"" |
"" |
|
| ・・・Vessel Name |
Last Location・・・ |
| 0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
| ・・・ |
"" |
"" |
"S" |
"L" |
|
| ・・・Last Location・・・ |
| 0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
| ・・・ |
"S" |
"_" |
"L" |
"0" |
|
| ・・・Last Location |
Last ATA・・・ |
| 0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
| ・・・ |
"1" |
May |
29th |
13 |
・・・ |
|
| ・・・ |
First Lock・・・ |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
| ・・・00 |
"S" |
"L" |
"S" |
・・・ |
|
| ・・・First Lock |
・・・ |
| 1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
| "_" |
"L" |
"0" |
"2" |
・・・ |
|
| ・・・First Lock ETA |
Second Lock・・・ |
| 0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
| May |
29th |
13 |
30 |
"S" |
|
| ・・・Second Lock・・・ |
| 0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
| "L" |
"S" |
"_" |
"L" |
|
| ・・・Second Lock |
Second Lock ETA・・・ |
| 1 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
| "0" |
"3" |
May |
29th |
14・・・ |
|
| ・・・Second Lock ETA |
Delay・・・ |
| 1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
| ・・・ |
00 |
"S" |
"L" |
"S"・・・ |
|
| ・・・Delay・・・ |
| 1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
| ・・・ |
"_" |
"L" |
"0" |
"1"・・・ |
|
| ・・・ |
Reserved |
| 0 |
1 |
0 |
0 |
0 |
0 |
| ・・・ |
0 |
|
9 Version Message (seaway)
| Parameter |
Number of bits |
Description |
| Application ID |
16 |
DAC = 316 or 366; FI = 32; See Section 2.1 |
| Reserved |
2 |
|
| Seaway Message ID |
6 |
Message Identifier = 1 (00 0001 in binary) |
| Major Version |
8 |
Major revision number |
| Minor Version |
8 |
Minor revision number |
| Reserved |
8 |
Reserved for future use |
| Total Number of Bits |
48 |
(1 Slots) |
|
Notes:
The Version Message identifies the current message
specifications being used by the Saint Lawrence Seaway AIS network. The combined
major and minor revision numbers refer to the document version of the "Saint Lawrence
Seaway AIS DATA Messaging Formats and Specifications".
A major revision number change indicates that an existing
message has been revised. Decoding algorithms for previous message versions will
misinterpret the content of the revised message.
A change in the minor revision number refers to an
addition of one or more new messages. These message additions should not
cause decoding routines that are compliant to the current major revision to misinterpret
existing messages. If the Seaway agencies deem that a newly introduced message
is critical to transit safety, the operating agencies may elect to make that a
Major revision change.
The Version Message is a binary broadcast. All shore
stations in the AIS network will transmit this message once every 15 minutes.
Note: Version 4.0 (major version = 4 and minor version
= 0) will be the initial version message when the Seaway AIS network begins its
operation.
9.1 Example: Version Message
Example:
| Designated Area Code |
Function Id |
Res. |
Message Id |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
| 316 |
32 |
0 |
1 |
|
| Major Version |
Minor Version |
Reserved |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| 4 |
0 |
0 |
|
10 Seaway Safety Related Message
The Seaway may transmit addressed and broadcast safety
related text messages to notify AIS equipped users to waterway conditions that
affect transit safety or efficiency. These messages will be formatted as defined
in the IEC 61993-2 document Section 7.6.19 (Message 12) and, Section 7.6.21 (Message
14).
11 References:
・IMO Resolution MSC.74(69), Annex 3, Recommendation on Performance Standards for an Universal Shipborne Automatic Identification Systems (AIS)
・ITU-R Recommendation M.1371-1, Technical Characteristics for a Universal Shipborne Automatic Identification System Using Time Division Multiple Access in the Maritime Mobile Band
・IEC 61993-2 Ed.1, Maritime navigation and radiocommunication requirements - Automatic identification systems (AIS) - Part 2: Class A shipborne equipment of the universal automatic identification system (AIS) - Operational and performance requirements, methods of test and required test results
・NMEA 0183: Standards For Interfacing Marine Electronic Devices, (C) NMEA 2000 Version 3.00, July 1, 2000
12 Appendix A - PAWSS Messages
Messages detailed in this section will be used in
areas where U.S. Coast Guard PAWSS AIS coverage is available.
・Hydro /Current Message
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Application ID |
16 |
DAC (10 bits) + FI (6 bits); FI = 1 |
|
|
|
| Spare |
2 |
|
|
|
|
| Msg ID |
6 |
Msg ID = [ 000100 ] = 4 |
1-63 |
|
Ulnt |
| Station binary data |
Max
896 |
From 1 to 6 "Hydro/Current Reports" |
|
|
|
| Total Num Bits |
Max
920 |
=24 + N*144
N; Total Bits (Num Req'd Slots)
1; 168 bits (2 slots)
2; 312 bits (2 slots)
3; 456 bits (3 slots)
4; 600 bits (4 slots)
5; 744 bits (4 slots)
6; 888 bits (5 slots) |
|
|
|
|
・Hydro /Current Report
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Timestamp |
20 |
Timestamp: MMDDhhmm (4,5,5,6 bits) (UTC time) |
1-12 Month
1-31 Day
0-23 hour
0-59 min |
1 minute |
Unsigned Int |
| Station id |
42 |
Alphanumeric string (7 6-bit chars) |
|
|
String |
| Longitude |
25 |
Longitude : East = positive, West = negative |
± 180 deg,
181 deg = NA |
1/1000 minute |
Signed Int |
| Latitude |
24 |
Latitude : North = positive, South = negative |
± 90 deg,
91 deg = NA |
1/1000 minute |
Signed Int |
| Current speed |
8 |
In 1/10th of a knot Output Range: 0 to 25.4 knots |
0-253,
254 = ≥254
255 = NA |
1/10 kt |
Unsigned short |
| Current direct |
9 |
Travelling toward |
0 - 359 deg,
511 = NA |
1 deg |
Unsigned Int |
| Space |
16 |
Reserved bits for future use |
|
|
|
| TOTAL BITS |
144 |
|
|
|
|
|
・Hydro /Salinity Temp Message
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Application ID |
16 |
DAC (10 bits) + FI (6 bits); FI = 1 |
|
|
|
| Spare |
2 |
|
|
|
|
| Msg ID |
6 |
Msg ID = [ 000101 ] = 5 |
1-63 |
|
Ulnt |
| Station binary data |
Max
816 |
From 1 to 6 "Hydro Salinity Reports" |
|
|
|
| Total Num Bits |
Max
840 |
=24 + N*144
N; Total Bits (Num Req'd Slots)
1; 168 bits (2 slots)
2; 312 bits (2 slots)
3; 456 bits (3 slots)
4; 600 bits (4 slots)
5; 744 bits (4 slots)
6; 888 bits (5 slots) |
|
|
|
|
・Hydro /Salinity Temp Report
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Timestamp |
20 |
Timestamp: MMDDhhmm (4,5,5,6 bits)
(UTC time) |
1-12 Month
1-31 Day
0-23 hour
0-59 min |
1 minute |
Unsigned Int |
| Station id |
42 |
Alphanumeric string (7 6-bit chars) |
|
|
String |
| Longitude |
25 |
Longitude : East = positive, West = negative |
± 180 deg,
181 deg = NA |
1/1000 minute |
Signed Int |
| Latitude |
24 |
Latitude : North = positive, South = negative |
± 90 deg,
91 deg = NA |
1/1000 minute |
Signed Int |
| Salinity |
10 |
in Practical Salinity Units (PSU) *10
Output Range: 0 to 102.2
PSU |
0 - 1022,
1023 = NA |
0.1 PSU |
Ulnt |
| Water Temp |
10 |
In 1/10th of a degree Celsius
Range = -51.1 to +51.1 deg C |
-511 to +511
-511 = ≤-511,
+511 = ≥+511,
-512 = NA |
0.1 deg C |
Signed Int |
| Space |
13 |
Reserved bits for future use |
|
|
|
| TOTAL BITS |
144 |
|
|
|
|
|
・Vessel Procession Order Message
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Application ID |
16 |
DAC (10 bits) + FI (6 bits) |
|
|
|
| Reserved |
2 |
Reserved bits for future use |
|
|
|
| Msg ID |
6 |
Msg ID = [ 000011 ] = 3 |
1-63 |
|
Ulnt |
| Timestamp |
20 |
Timestamp: MMDDhhmm (4,5,5,6, bits) (UTC time) |
1-12 Month; 0=NA
1-31 Day; 0=NA
0-23 hour; 24=NA
0-59 min;
60=NA |
1 minute |
Unsigned Int |
| Direction Id |
96 |
Alphanumeric string (16 6-bits chars) |
|
|
String |
| Longitude |
25 |
Longitude : East = positive, West = negative |
±180 deg,
181 deg = NA |
1/1000 minute |
Signed Int |
| Latitude |
24 |
Latitude : North = positive, South = negative |
±90 deg,
91 deg = NA |
1/1000 minute |
Signed Int |
| Reserved |
3 |
Reserved bits for future use |
|
|
|
| Binary data |
Max |
From 1 to 4 "Vessel order Reports" |
|
|
|
| Total Num Bits |
Max |
=192 + N*184
N; Total Bits (Num Req'd Slots)
1; 376 bits (3 slots)
2; 560 bits (4 slots)
3; 744 bits (4 slots)
4; 928 bits (5 slots) |
|
|
|
|
・Vessel Procession Order Report
| PARAMETER |
BITS |
DESCRIPTION |
RANGE |
RESOLUTION |
DATA TYPE |
| Order |
5 |
Vessel's procession order in list ("1" being the first vessel
to proceed) |
1-31 |
|
Ulnt |
| Vessel Name |
90 |
15 6-bit chars |
|
|
string |
| Position Name |
72 |
vessel position at time of last call-in (12 6-bit chars) |
|
|
string |
| Time |
11 |
time of call-in associated with position "Position Name" :
hhmm (5,6 bits)
(UTC time) |
0-23 hour
0-59 min |
1 minute |
Unsigned Int |
| Reserved |
6 |
Reserved bits for future use |
|
|
|
| TOTAL BITS |
184 |
|
|
|
|
|
|
