Estimated Lock Times Message (Seaway)

Permitted as from:

09/03/2002

Registrant:

Saint Lawrence Seaway Development Corporation

Physical link:

AIS

Message number (0=VDES-VDE):

DAC or VPFI:

366

FI / Message ID:

Sub:

Technical point of contact:

U.S. Department of Transportation
John A. Volpe
Transportation Systems Center
55 Broadway
Cambridge, MA 02142

State:

in force

Number of slots (max):

Last modified:

10/04/2022 - 12:37

Reporting Rate:

Each individual Seaway message has an assigned update interval established by the Seaway Traffic Management System (TMS). However, the AIS network may elect to retransmit any messages, system resources permitting, at more frequent intervals.

Used by:

Saint Lawrence Seaway Development Corporation

Details:

Parameter	Number of bits	Description
Designated Area Code	10	The Designated Area Code will be 366 for the United States or 316 for Canada depending on the location of transmitter. Refer to Section 1.1 for description
Function Identifier	6	FI=1
Reserved	2
Message ID	6	Message Identifier = 2 (00 0010 in binary)
Timetag	20	Month, Day and Time of Message,
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 table below
First Lock	42	7 character identifier of first lock in 6 bit ASCII
First Lock ETA	20	See table below
Second Lock	42	7 character identifier of second lock in 6 bit ASCII
Second Lock ETA	20	See table below
Delay	42	7 character identifier of the first lock which currently has a vessel being delayed
Reserved	4	See table below
Total Number of Bits	366	(3 Slots)

UTC Time

Parameter	Number of bits	Description
Month	4	Month of year (01- 12 Month); 0 = not available; 13-15 not used
Day	5	Day of month (01 - 31 Days); 0 = not available
Hours	5	UTC Hours (0-23); 24 = not available; 25-31 not used
Minutes	6	UTC Minutes (0-59); 60 = not available; 61-63 not used
Total number of bits	20