|
5 Water Level Message
| Parameter |
Number of bits |
Description |
| Application ID |
16 |
DAC = 316 or 366; FI = 1; See Section 2.1 |
| Reserved |
2 |
|
| Message ID |
6 |
Message Identifier = 3 (00 0011 in binary) |
| Binary Data |
Max 864 |
Message contains 1 to 6 water level reports, each structured
as defined in Section 5.1 |
| Total Number of bits |
Max 888 |
= 24 + N*144
N Total Bits (Slots Required)
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) |
|
5.1 Water Level Report
| Timetag |
20 |
Month, Day and Time of reading, See Section 2.2 |
| Station ID |
42 |
Seven 6-bit ASCII character ID |
| Longitude |
25 |
Longitude in 1/1000 minute (±180 degrees, East = positive,
West = negative. 181 degrees = not available) |
| Latitude |
24 |
Latitude in 1/1000 minute (±90 degrees, North = positive,
South = negative. 91degrees = not available) |
| Water Level Type |
1 |
0 or 1; 0=Relative to reference datum , 1 = Water Depth, Note:
Always 0 for Saint Lawrence Seaway |
| Water Level |
16 |
Water level in centimeters -327.67 to +327.67 meters, -32767
= -327.67 m or less, +32767 = +327.67 m or greater, -32768 = not available |
| Reference Datum |
2 |
Defines datum used
0 = MILLW
1 = IGLD-85
2,3 = reserved for future use
Note: Always 1 for Saint Lawrence Seaway |
| Reserved |
14 |
Reserved bits for future use |
| Total Number of bits |
144 |
|
|
Notes:
Readings are updated once every hour. Information from
available water level sensors will be broadcast throughout the Saint Lawrence
Seaway.
Water level readings at the Saint Lawrence Seaway are
based on the 1985 - International Great Lakes Datum (IGLD-85).
5.2 Example: Water Level Message
| Designated Area Code |
Function Id |
Res. |
Message Id |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
| 316 |
1 |
0 |
3 |
|
| Timetag |
・・・ |
| 0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
| 5 |
29 |
00 |
34 |
"T"・・・ |
|
| ・・・Station Id・・・ |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
| ・・・"T" |
"E" |
"S" |
"T" |
"1"・・・ |
|
| ・・・Station Id |
Longitude・・・ |
| 0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
| ・・・"1" |
"" |
"" |
27°05' E・・・ |
|
| ・・・Longitude |
Latitude・・・ |
| 1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
| ・・・27°05' E |
5°05' N・・・ |
|
| ・・・Latitude |
T |
Wind Level・・・ |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・5°05' N |
0 |
0.32m・・・ |
|
| ・・・Water Level |
RD |
Reserved |
| 0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・0.32m |
IGLD |
0 |
|
6 Water Flow Message (Seaway)
| Parameter |
Number of bits |
Description |
| Application ID |
16 |
DAC = 316 or 366; FI = 1; See Section 2.1 |
| Reserved |
2 |
|
| Message ID |
6 |
Message Identifier = 6 (00 0110 in binary) |
| Binary Data |
Max 864 |
Message contains 1 to 6 water flow reports, each flow report
is defined in Section 6.1 |
| Total Number of bits |
Max 888 |
= 24 + N*144
N Total Bits (Slots Required)
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) |
|
6.1 Water Flow Report
| Timetag |
20 |
Month, Day and Time of reading, See Section 2.2 |
| Station ID |
42 |
Seven 6-bit ASCII character ID |
| Longitude |
25 |
Longitude in 1/1000 minute (±180 degrees, East = positive,
West = negative. 181 degrees = not available) |
| Latitude |
24 |
Latitude in 1/1000 minute (±90 degrees, North = positive,
South = negative. 91 degrees = not available) |
| Water Flow |
14 |
Water flow cubic meters per second (16383 = Not Available) |
| Reserved |
19 |
Reserved bits for future use |
| Total Number of bits |
144 |
|
|
Notes:
Flow information from sensors will be transmitted to
users throughout the Saint Lawrence Seaway via the AIS network.
Water flow readings are updated once every hour and
will be repeated over the network every 15 minutes.
6.2 Example: Water Flow Message
| Designated Area Code |
Function Id |
Res. |
Message Id |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
| 316 |
1 |
0 |
6 |
|
| Timetag |
・・・ |
| 0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
| 5 |
29 |
00 |
34 |
"T"・・・ |
|
| ・・・Station Id・・・ |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
| ・・・"T" |
"E" |
"S" |
"T" |
"1"・・・ |
|
| ・・・Station Id |
Longitude・・・ |
| 0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
| ・・・"1" |
"" |
"" |
27°05' E・・・ |
|
| ・・・Longitude |
Latitude・・・ |
| 1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
| ・・・27°05' E |
5°05' N・・・ |
|
| ・・・Latitude |
Water Flow・・・ |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・5°05' N |
8192 m3/s・・・ |
|
| ・・・Water Flow |
Reserved |
| 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・8192 m3/s |
0 |
|
7 Lockage Order Message (seaway)
| Parameter |
Number of bits |
Description |
| Application ID |
16 |
DAC = 316 or 366; F1 = 2; See Section 2.1 |
| Reserved |
2 |
|
| Message ID |
6 |
Message Identifier = 1 (00 0001 in binary) |
| Timetag |
20 |
Month, Day and Time of Message, See Section 2.2 |
| Lock ID |
42 |
Seven characters in 6 bit ASCII. "@@@@@@@" = not available |
| Longitude |
25 |
Longitude in 1/1000 minute (±180 degrees, East = positive,
West = negative. 181 degrees = not available) |
| Latitude |
24 |
Latitude in 1/1000 minute (±90 degrees, North = positive,
South = negative. 91 degrees = not available) |
| Reserved |
9 |
Reserved bits for future use |
| Lock Schedule |
Min 120
Max 720 |
Each Lock Order Message contains up to 6 lock schedule reports
structured as defined in Section 7.1 |
| Total Number of bits |
Min 264
Max 864 |
= 144+N*120
N Total Bits (Slots Required)
1 264 bits (2 slots)
2 384 bits (3 slots)
3 504 bits (3 slots)
4 624 bits (4 slots)
5 744 bits (4 slots)
6 864 bits (5 slots) |
|
7.1 Lock Schedule Report
| Parameter |
Number of bits |
Description |
| Vessel Name |
90 |
15 characters in 6-bit ASCII. "@@@@@@@@@@@@@@@" = not available |
| Direction |
1 |
TRUE = Up bound = 1, FALSE = Down bound = 0 |
| ETA |
20 |
Estimated time of arrival (format as defined in Section 2.2) |
| Reserved |
9 |
Reserved bits for future use |
| Total Number of Bits |
120 |
|
|
Notes:
The Lockage Order Message contains schedule information
for the next three lock operations. Two separate messages will be send for Locks
with dual chambers, such as the Welland Canal flight locks.
The Lockage Order Message is a local binary broadcast
message. Lockage order information is updated every 15 minutes. The transmission
of this message is limited to areas where the information is applicable.
Lock Identifiers:
SLS_L01 - Welland Canal Lock 1
SLS_L02 - Welland Canal Look 2
SLS_L03 - Welland Canal Lock 3
SLS_L4E - Welland Canal Lock 4 East
SLS_L4W - Welland Canal Lock 4 West
SLS_L6E - Welland Canal Lock 6 East
SLS_L6W - Welland Canal Lock 6 West
SLS_L07 - Welland Canal Lock 7
SLS_L08 - Welland Canal Lock 8
SLS_IRO - Iroquois Lock
SLS_IKE - Eisenhower Lock
SLS_SNL - Snell Lock
SLS_B03 - Beauharnois Lock 3
SLS_B04 - Beauharnois Lock 4
SLS_CSC - Cote Saint Catherine Lock
SLS_SLB - Saint Lambert Lock
7.2 Example: Lockage Order 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 |
0 |
1 |
| 316 |
2 |
0 |
1 |
|
| Timetag |
・・・ |
| 0 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
| 5 |
29 |
00 |
34 |
"T"・・・ |
|
| ・・・Lock Id・・・ |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
| ・・・"T" |
"E" |
"S" |
"T" |
"1"・・・ |
|
| ・・・Lock Id |
Longitude・・・ |
| 0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
1 |
| ・・・"1" |
"" |
"" |
27°05' E・・・ |
|
| ・・・Longitude |
Latitude・・・ |
| 1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
| ・・・27°05' E |
5°05' N・・・ |
|
| ・・・Latitude |
Reserved |
| 0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・5°05' N |
0 |
|
| Vessel Name・・・ |
| 0 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
|
| "M" |
"I" |
"L" |
"K" |
|
| ・・・Vessel Name・・・ |
| 0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
| "Y" |
"" |
"S" |
"T" |
|
| ・・・Vessel Name・・・ |
| 0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
| "A" |
"R" |
"" |
"" |
|
| ・・・Vessel Name |
D |
ETA・・・ |
| 1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
| "" |
"" |
"" |
U |
May |
・・・ |
|
| |
Reserved |
| 1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| ・・・29th |
00 |
34 |
0 |
|
|
