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Waterways Management and Navigation Safety LCDR Amy Wirts Waterways Management Division Chief

Waterways Management and Navigation Safety LCDR Amy Wirts Waterways Management Division Chief Amy.E.Wirts@uscg.mil. Waterways Management and Navigation Safety Issues. Use of AIS to convey navigation information Updates to the Critical Maneuvering Areas (CMAs) throughout San Francisco Bay

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Waterways Management and Navigation Safety LCDR Amy Wirts Waterways Management Division Chief

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  1. Waterways Management and Navigation Safety LCDR Amy Wirts Waterways Management Division Chief Amy.E.Wirts@uscg.mil

  2. Waterways Management and Navigation Safety Issues • Use of AIS to convey navigation information • Updates to the Critical Maneuvering Areas (CMAs) throughout San Francisco Bay • Changes to the existing Aids to Navigation (ATON) system.

  3. AIS for Navigation Safety Information • AIS electronic marks: • Marking Safety / Security Zones – example America’s Cup • Developing use as electronic ATON to provide information on discrepant buoys

  4. AIS for Navigation Safety Information • AIS text messages: • America’s Cup – informed vessels approaching SF Bay that the America’s Cup was in place • Whale broadcasts – currently informing vessels departing SF Bay of NOAA’s 10kt speed recommendation • Future use – potentially for no-wake zone and other information regarding safety conditions in the port

  5. AIS for Navigation Safety Information • AIS Application Specific Messages (ASM) • Future use for providing detailed information in polygon form • Potential uses: No wake zones, bridge transit information, safety zone perimeters

  6. Critical Maneuvering Areas • Temporary guidelines currently in place which restrict Bay Bridge transits: • Vessels transiting the San Francisco-Oakland Bay Bridge (West of Yerba Buena Island) in any condition of reduced visibility should generally do so via the A-B or D-E span unless vessel traffic, environmental or other safety factors dictate otherwise. • Outbound/northbound vessels should not transit the San-Francisco Oakland Bay Bridge (West of Yerba Buena Island) when visibility is less than 0.5 nautical mile. • Inbound vessels transiting the San Francisco-Oakland Bay Bridge in restricted visibility are advised to exercise extreme caution during their transit.

  7. Critical Maneuvering Areas

  8. Reduction in ATON • The Coast Guard as a whole is reducing the constellation of physical aids to navigation • Current focus in California is on offshore buoys • All proposed disestablishments will be published in the Local Notice to Mariners • USCG is working with NOAA to create chart markings for paper and electronic charts which replace the physical aids • D11 is currently advertising the “N”, “W” and “S” buoys in the approach to SF Bay.

  9. LCDR Amy Wirts Waterways Management Division Chief Amy.E.Wirts@uscg.mil

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