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Cruise Planning and Cruising Course
Chapter 5Electronics and Navigation
United States Power Squadrons ®
Instructors and Students Please Note:Post-release corrections, notes, and updates are posted at:http://www.usps.org/national/eddept/cp/main.htmPlease check the site in order to have the best available materials.
Slide 2
Summary
Electronics Traditional Piloting and
Charting• Charts and Publications
Special Navigation• Harbors• Inlets• Bridges• Dams and locks
Electronics
Many electronics aids are available For dependable performance, redundancy
is the key (both electronic and tranditional)
New developments facilitate manual steps in the navigation process
Not a subsitute Complementary
Slide 3
Electronics
Depth sounder/SONAR• Instant view of water depth• Useful for shallow channels, anchoring, and
navigation
Speed/Knotmeter• Provides speed through water reading• In comparison with speed over ground, can help
determine wind and current effects
Global Positioning System (GPS)• Provides essential locational information• Can serve as a knotmeter providing speed over
ground
Slide 4
GPS Unit
Slide 5
Electronics
Computer assisted navigation• Computer use onboard• Protection necessary unless waterproof and shock
resistant
Chartplotter• Combines GPS and charts in an electronic form• Realtime view on chart
Radar• Provides view of other boats as well as fixed objects• Provides view of precipitation and severe weather
information• Some objects and boats do not give a return: lookout is
still vital
Slide 6
Chartplotter
Slide 7
Courtesy of Standard Horizon
Electronics
Automated Identification System (AIS)• Provides information on ships and vessels in
your area• Aids communications
Integrated Systems• Overlaying information
Radar on chartplotter GPS connected to VHF, chartplotter, etc.
New Technologies• Thermal night vision• Forward looking sonar
Slide 8
Integrated System
Slide 9
Courtesy of Furuno
Traditional Piloting and Charting
Navigation on inland and coastal water is challenging
Charts, and use of them, is essential• NOAA website offers up-to-date charts• Coast Pilots• Reed’s Nautical Almanac• Eldridge Tide and Pilot Book
Binoculars Compass
Slide 10
Essential Tools
Slide 11
Special Navigation
Harbors• Commercial traffic can be hazardous to the
recreational boater• Research large harbors before visiting.• If visiting, ensure you understand areas that
are open and allowed for anchoring or tying to the quay.
Inlets and overfalls• Meeting currents create rough and dangerous
surf• If leaving a coastal harbor, ensure you know
tides and monitor wind direction
Slide 12
Special Navigation
Bridges• Drawbridges (Bascule bridge on charts).• Check schedule for drawbridge before
encountering• Bridge tender monitors channel 13.• Research charts and other cruising guides for
bridge heights along your route.
Dams and locks• Locks used to bypass dams and weirs.• Lockmaster is in charge.• Priority order for vessels; recreational vessels
have the lowest priority for entry into locks.
Slide 13
Bridges
Low bridges usuallyhave guages to indicate
clearance
Slide 14
Locks
Slide 15
Deep Creek Lock on the Dismal Swamp Canal, Virginia. Courtesy: US Army/Jerry Rogers
Deep Creek Lock on the Dismal Swamp Canal, VirginiaCourtesy of the US Army/Jerry Rogers
Deep Creek Lock on the Dismal Swamp Canal, Virginia. Courtesy: US Army/Jerry Rogers
Logbook
Maintain a logbook on boat Record events Provides a record of boat systems
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Questions ? … Comments
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