Class B - Milltech Marine

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Doug Miller
Milltech Marine Inc. www.MilltechMarine.com
120 Harrison Ave., Port Orchard, WA 98366 Milltech Marine
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What I’ll Cover …
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 What is AIS?
 AIS Transponders
 AIS Receivers
 Typical Usage Scenarios
 Next Steps and Questions
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What Is AIS
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 AIS = Automatic Identification System
 AIS is a broadcast transponder system, operating in the h
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VHF maritime mobile band Transmits ship information such as identification, position course, speed and more, to other ships and to shore
Think ATC screens for shipping, fully automatic
Uses VHF 87B & 88B to broadcast vessel information
Two classes of transponders
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 Class A: mandated for use on SOLAS and other types of e
commercial vessels
 Class B: for use on recreational and small commercial vessels
 Integrated GPS to fix own position and transmit info via VHF
 Both require VHF and GPS antennas (or possibly external GPS)
 NOT a replacement for radar or other watch methods
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AIS Broadcast Information
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* Class A only
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Demo
 PC with Rose Point Navigation Coastal Explorer
 Log of a GPS and AIS session
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 See the demo on: http://youtu.be/m6Yugk7DSR8 e
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Class A AIS Transponders
 Required on …
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 Vessels on international voyages / SOLAS
 Tankers
 Passenger vessels that are over 150 gross tons
 Commercial vessels of 65 feet or more in length
 Other vessels over 300 gross tons
 Vessels operating within U.S. Vessel Traffic Service  Towing vessels of 26 feet or more in length and more than 600 horsepower
 Passenger vessels, regardless of size, certificated to carry more than 150 passengers for hire
 Self‐propelled commercial vessels of 65 feet or more in length, other than fishing vessels and small passenger vessels carrying less than 150 passengers.
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 Typically used by … e
 Commercial fishing vessels, tugs, some barges
 Super yachts
 Rarely used by …
 Military or Coast Guard vessels
 Small recreational or fishing vessels (Class B more appropriate?)
 Cost $2,500 ‐ $10,000
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Class B AIS Transponders
 Class B AIS illt
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 Targeted at recreational market
 Approved by FCC / USCG in US since Nov 2008
 Lower cost than Class A
 Class B is similar to the Class A, except that Class B
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 Carrier‐sense technology vs. Class A self‐organizing
 Has a reporting rate less than a Class A  e.g. every 30 sec. when under 14 knots, vs. 10 sec. for Class A
 Does not transmit the vessel’s IMO number
 Does not transmit ETA or destination, navigational status  Does not transmit ROT information, maximum present static draught  Is only required to receive, not transmit, text safety or binary messages
 Lower power transmitter: 2 watts vs. 12.5 watts
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 Other issues
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 Not all older displays “see” Class B, rumors of filtering Class B out?
 Recreational adoption?
 Must be pre‐programmed by reseller or professional installer
 Vessel Traffic Service know who you are and where you are (monitor VTS channel on VHF)
 Privacy concerns
 Note: broadcast range 5‐7 miles – not appropriate for tracking?
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Class B AIS Transponders
 Components
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 VHF transceiver  Broadcasts on 2 VHF channels (alternating)
 Receives on both AIS channels  Receives DSC messages for AIS management
 Integrated GPS receiver
 Antenna requirements (GPS and VHF)
 Some with integrated display
 Can interface with supported computer ar
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software and chart plotters via NMEA0183, NMEA2000, RS232, USB – even WiFi
 12‐24v DC power required
 Switch options for “silent mode” and SRM
 Pricing for kits under $500
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AIS Receivers
 Receives transponder broadcasts from both Class A and Class B illt
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transponders and converts into NMEA serial data
 Single or dual channel reception
 Single channel less appropriate?
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 GPS is not required for AIS receivers
 Although some have integrated GPS or GPS multiplexer
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 Outputs 38400 baud NMEA sentences
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 AIVDM, some receivers also output GPS
 Used by computers or chart plotters
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 Typical range 25+ miles for Class A with good antenna
 Typical connections
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 VHF antenna, 12‐24v DC
 Output line: serial (RS232), USB, NMEA 0183, NMEA 2000
 Users: recreational, commercial, military
 Pricing from $189
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AIS on computers & mobile
 PC software (sample list)
Rose Point Navigation Coastal Explorer
AMEC AIS Viewer (free with AMEC products)
Nobeltec Visual Navigation Suite, Admiral, Trident
Fugawi
MaxSea with the Mobiles Module
Seaclear (free!)
OpenCPN (free / open source!)
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 Apple software
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 USB models available
 RS232 models available
 Wi‐Fi
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 AIS device to computer
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 GPSNavX  MacENC
 iNaxX, iSailor, Navimatics (iPhone, iPad)
 Free online AIS viewing (no AIS receiver required)
 www.marinetraffic.com plus mobile apps
 Boat Beacon, ShipFinder apps
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AIS for Chartplotters / Displays
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 Support from virtually all brands
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 Standard Horizon, Garmin, Raymarine, Furuno
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 Many other brands and models h
 Check with manufacturer if in doubt
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 Dedicated AIS displays (AIS WatchMate, ICOM)
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 AIS receiver or transponder to chart plotter?
 RS422 NMEA and RS232 serial output available
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 Connect AIS “NMEA out” to plotter “NMEA in”
 NMEA 2000 another option (very easy)
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Other AIS Accessories
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 AIS/VHF Antenna ec
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Splitters
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 Networking solutions and other accessories
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 Antennas, GPS, cables and in
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multiplexers
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AIS Scenario 1a
AIS Receiver to PC & Chartplotter
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Comar AIS-3R
AIS Receiver
Computer AIS view
GPS to AIS
via NMEA
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VHF to
AIS
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AIS & GPS to computer
via USB
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Chartplotter AIS list
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VHF Antenna
to Splitter
AIS to
chartplotter
via NMEA
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VHF
to radio
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VHF
Antenna
Splitter
GPS to VHF
(for DSC)
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AIS Scenario 1b
AIS Transponder to PC & Chartplotter
AMEC CAMINO-101
Class B AIS
Transponder
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GPS antenna
Computer AIS view
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VHF to
AIS
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AIS/GPS to computer
via SerialUSB
Chartplotter AIS list
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AIS to
chartplotter
via NMEA
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VHF
to radio
VHF Antenna
to Splitter
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VHF
Antenna
Splitter
GPS to VHF
(for DSC)
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AIS Scenario 2
AIS Receiver / VHF Radio & Chartplotter
Standard Horizon Chartplotter with
AIS display
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Plotter with AIS display
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GPS to VHF
(for DSC & AIS)
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AIS / DSC
to plotter
Radio AIS display
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VHF Antenna
to VHF radio
Milltech Marine
Standard Horizon Matrix AIS
VHF radio with AIS receiver
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AIS Scenario 3
AIS to Chartplotter, iPad and Computer
AIS/GPS/NMEA data to
computer via USB (or WiFi)
Computer AIS view
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GPS antenna
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Vesper Marine
XB-8000 Class B
AIS Transponder
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AIS data to
Chartplotter
via NMEA
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Chartplotter
data to XB-8000
via NMEA
iPad iNavX AIS view
AIS/GPS/NMEA
data to iPad
over WiFi
VHF to
transponder
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Next steps
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 What to do tomorrow?
 Check out www.marinetraffic.com
 What to do over the next month?
 Decide whether AIS is right for you (of course it is!)
 Decide on receiver or transponder
 Transponder? Get your MMSI
 What to do before your next major cruise?
 Look at all your other equipment and choose an AIS solution that best meets your needs and works with existing or planned equipment.
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Questions?
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www.MilltechMarine.com
Doug Miller
info@milltechmarine.com
206‐299‐2217
Visit our store: 120 Harrison Ave. in Port Orchard
Thank you!
Milltech Marine
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