ROYAL CAPE YACHT CLUB
2011 Electronics Seminar
Presented By:
Greg Flederman
Brought to you by
www.theboatdoctor.net
facebook.com/theboatdoctor
The Boat Doctor
Greg Flederman
Website: theboatdoctor.net
Blog: theboatdoctoronline.net
Facebook.com/theboatdoctor
Boston, Massachusetts, U.S.A
D.S.C. / A.I.S.
• D.S.C. – Digital Selective Calling
• A.I.S. – Automatic Identification System
D.S.C – Digital Selective Calling
•
•
•
•
VHF Radio receives position data from GPS or Chartplotter
Get MMSI (Maritime Mobile Service Identity) from ICASA.org.za
Program MMSI into VHF
On activation, VHF broadcasts SOS, Position and MMSI number.
OR
A.I.S.- Automatic Identification System
• Receiver – Collects AIS information from VHF and
sends it to the Chartplotter/Display
• Class A – Receives and Broadcasts, 12 Watt output
every 2-10 seconds, sends more vessel information and
has more in- and output ports than Class B
• Class B – Receives and Broadcasts, 2 Watt output
every 30 seconds, sends only vessel ID and “motion”
information, communicates on NMEA 1830 (2000 on
very new models)
A.I.S.
• AIS takes
information
from VHF and
GPS and then
sends
information to
chartplotter
“Apples to apples” installation
Raymarine AIS250
Simrad/Navico NAIS-300
Raymarine AIS500
Garmin AIS600
RADAR
• Ben Ellison – Panbo.com
Pulse vs Broadband Radar
• Pulse – Traditional, radar as we know it.
• Broadband – FMCW – Frequency Modulated
Continuous Wave
• Uses 2 arrays mounted vertically, one sending,
the other receiving.
• Instead of receiving a return from a single pulse,
FMCW technology constantly builds up radar
return energy. Resulting in superior target
definition (especially at close range)
Advantages/Disadvantages
of Broadband Radar
•
•
•
•
•
Very good at close range (1/32NM)
Safer (1/2000th output) – much disagreement
Lower DC power draw
Radar continually tunes itself
No Tuning/warm up time
•
•
•
•
Not as effective over 15NM
Won’t trigger RACON buoys
Size
Only available from Navico – Lowrance, Simrad and
Northstar
MFD’s
Multi Function Displays
INPUTS
•
•
•
•
•
•
•
Charting Software
Broadband and Hi-Def Radar
Broadband Depth
Weather
Hi - Def and Infra-red Cameras
Sensor and Systems Information
Multimedia
Touchscreen:
• Raymarine E-Series and Garmin 5000 and
7000
• Furuno and Navico do not offer touchscreen
Radar Overlay
• Only Furuno and Garmin can overlay Radar on 3D charts
Best at showing weather
• Raymarine and Furuno show rain best, although
the Furuno UHD is much more expensive
Best at Broadband
• Of the Navico MFD’s – Simrad’s NSE
MARPA
Mini Automatic Radar Plotting Aid
• Only offered on the Simrad NSE,
Raymarine and Garmin MFD’s, not on
Furuno
True Wakes/Echo
• Only Furuno and Raymarine, not on
Garmin or Simrad
Furuno True Motion Echo
Garmin MARPA
Raymarine with True Wakes and MARPA
PLB’s
Personal Locator Beacons
• Three main types - EPIRB, EPIRB with GPS, GPS
• Spot - 406 MHZ with GPS and Globalstar messaging,
SAR by company
• ACR mini B -121.5 MHZ and 406 MHZ, non GPS,
SAR by USCG/AMVER
• McMurdo - 121.5 MHZ and 406 MHZ, GPS, AMVER
SAR
• ACR Aqualink - 121.5 MHZ and 406 MHZ and 406
link, with I'm OK and Aquaview LED test function,
AMVER SAR
Spot Locator
ACR Mini B
McMurdo FastFind
ACR Aqualink
MSLD’s
Marine Survivor Location Devices
•
SeaMarshall - base unit and PLB, extensive commercial use
•
Mobilert - transmitter activated by water, generates GPS tag
•
Firstlight Mermaid ID - base, thru hull and ID -pods, water activated,
generates GPS tag
•
Alert 2 - As above with optional R.D.F kit
•
Raymarine Lifetag - tag activated by distance, sounds Seatalk alarm,
records position and creates mob target on all Seatalk devices, lowers
range on chartplotters and radars to optimum for MOB/SAR, up two 16
tags per base station.
Sea Marshall
Mobilert
Mermaid ID
Alert2
Raymarine Lifetag
Caveat’s:
Beware of the Blackberry Effect
Remember that all of these things we’ve discussed tonight are electronic aids to navigation and
cannot replace your eyes, ears, a compass and paper charts as your primary forms of navigation
The Boat Doctor
Website: theboatdoctor.net
Blog: theboatdoctoronline.net
Facebook.com/theboatdoctor
Boston, Massachusetts, U.S.A