Satellite Ship Weather Tiny

Introduction/Additional information: 

The Satellite Ship Weather Tiny message is intended to be used to transmit weather observations over ship that will be received by Satellite AIS receivers. The difference between this message and the DAC 1 FI 21 Ship Weather report is that this message has been reduced in size to provide increased probability of detection via satellite. Similar to the rationale for the AIS message 27, this message is much less than a single slot.

All directions are relative to True North, all positions are WGS-84 Datum.

  1. For this message, the data is assumed to be from transmitting MMSI, and is a ship station. The sensor owner is the source of the data, as indicated by the MMSI. The data is assumed to be raw real time data with a validity interval of 6 hours.
  2. In order to reduce sentence size while retaining weather data, the position has been dropped from this message so the position of the data report must be inferred from the AIS message 27s or 1s received around this message.
Permitted as from: 
01/10/2019
Registrant: 
USACE
Message number: 
8
DAC: 
367
FI: 
25
Version: 
0
Technical point of contact: 

Dr. Gregory Johnson

State: 
draft
Number of slots (max): 
1
Last modified: 
20210302T140006