Why Boaters Need the Automatic Identification System (AIS)
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AIS Why Boaters Need The Automatic Identification System
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A presentation given to the United States Power Squadron District 17 Meeting on October 18, 2014 by Bob Duthie, Duthie Learning. The presentation describes AIS,the various types, and how it is used to prevent accidents on inland waters. It also covers how AIS differs from radar, and the importance of proper etiquette.
Transcript of Why Boaters Need the Automatic Identification System (AIS)
AIS
Why Boaters Need The Automatic
Identification
System
What is AIS
• Electronic Tool
–"See” & identify nearby vessels even when view is blocked
• Mandatory for 300T+
What is AIS
• Uses VHF Radio signals
• 15 mile range
What is AIS
Sees over hills
What is AIS
Lists vessel’s details vessels
• Name
• Speed
• Heading
• Bearing from your boat
• Location
What is AIS
Two Types
• Transmit & Receive
• Receive Only
What is AIS
Two Types
• Transmit & Receive
• Receive Only
Katy Leigh 9 mphFreighter 20 mph
FOG
MoonstruckMoonstruck Sept 30, 2011Rolled over and sank on a Tenn-Tom Waterway Bend
Not the actual boat
Tow
Moonstruck
TowMoonstruck
What is AIS
Would AIS have saved Moonstruck?
Other Tenn-Tom Bends are more treacherous
Tennessee River Below Ditto Landing
AIS Etiquette
Turn off transmitter when not needed!
• In harbor
• When not underway
AIS Etiquette
Turn off transmitter when not needed!
• In harbor
• When not underway
• When following another boat
AIS Etiquette
Learn how to turn off transmitter
• Not easy
• No power switch
• Units are inaccessible
• Some controlled by computer software
• May have to use circuit breaker
AIS Etiquette
•Test with another boat
AIS vs RADAR
If I already have Radar do I need an AIS receiver?
AIS vs RADAR
AIS
• Shows name
• Shows details
• Sees over hills
• Vessel must transmit
• Not rain sensitive
Radar
• Shows blob only
• Shows only line of site objects
• Shows buoys
• Shows all vessels with or without AIS
• Rain clutter
Buying an AIS
Three types
• Class A – for 300T+
–Expensive $4,500
–Transmit & Receive
• Class B – for small vessels
–$900
– Transmit & Receive
• Receive only
–$300
Buying an AIS
Integrated VHF Radio
• NMEA 183 to chartplotter or computer
Buying an AIS
VHF Radio with AIS
Buying an AIS
Compatible Chartplotter/Computer
• Connect module via NMEA0183 cable
• Connect power to module
Search “Stories” for more at: www.greatloopcruising.com
