U.S. Coast Guard Navigation Center2007 International Loran Association Conference

October 16 - Orlando FL

Loran Performance – 2007

LT Barry Boyd – COCO SEUS & SOCUS Chains

PerformanceOverview

Introduction

System Performance

Chain Performance

Accomplishments

Conclusion

US COAST GUARD NAVCEN LORAN OPERATIONS (2007 Year To Date)

COCO’s:

NORPAC/GOA/RAC – LTjg Chris Rue

USWC/NOCUS – LT Dennis Good

NEUS/GLKS – CWO Scott McDonald

SEUS/SOCUS – LT Barry Boyd

CY 07 RATE AVAILABILITY VS PERFORMANCE

98.80%

99.00%

99.20%

99.40%

99.60%

99.80%

100.00%

7960 7980 8290 8970 9610 9940 9960 9990

Availability Performance

2007 Cumulative UUT by Cause (All Chains)

AUTM81.77%

EUTM0.36%Equipment

6.75%

Catastrophe2.27%

Communication0.00%

Personnel0.20%

Power0.00%

Natural8.64%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

5980 RAC CY07 AVAILIBILITY VS PERFORMANCE

82.00%

84.00%

86.00%

88.00%

90.00%

92.00%

94.00%

96.00%

98.00%

100.00%

Petro, Russia Attu, AK

Avail Perform

2007 Cumulative UUT by Cause (5980)

AUTM88%

Equipment12%

EUTM0%

Power0%

Natural0%

Personnel0%

Communication0%

Catastrophe0%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

7960 GOA CY07 AVAILIBILITY VS PERFORMANCE

93.00%

94.00%

95.00%

96.00%

97.00%

98.00%

99.00%

100.00%

Tok, AK Kodiak, AK Shoal Cove,AK

Port Clarence,AK

Avail Perform

2007 Cumulative UUT by Cause (7960)

EUTM0%

Communication0%

Personnel0%Power

0%Catastrophe

0%

Equipment1%

Natural17%

AUTM82%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

7980 SEUS CY07 AVAILIBILITY VS PERFORMANCE

99.00%

99.10%

99.20%

99.30%

99.40%

99.50%

99.60%

99.70%

99.80%

99.90%

100.00%

Malone Grangeville Raymond Jupiter Carolina

Avail Perform

2007 Cumulative UUT by Cause (7980)

AUTM15%

EUTM1%

Equipment2%

Catastrophe0%

Communication0%

Personnel1%

Power0%

Natural81%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

8290 NOCUS CY07 AVAILIBILITY VS PERFORMANCE

99.70%

99.75%

99.80%

99.85%

99.90%

99.95%

100.00%

Havre, MT Baudette, MN Gillette, WY Williams Lake,BC

Avail Perform

2007 Cumulative UUT by Cause (8290)

AUTM82%

Natural7% Personnel

0%Communication

0%

Power0%

Catastrophe0%

Equipment11%

EUTM0%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

8970 GLKS CY07 AVAILIBILITY VS PERFORMANCE

98.80%

99.00%

99.20%

99.40%

99.60%

99.80%

100.00%

Dana, IN Malone, FL Seneca,NY

Baudette,MN

Boise City,OK

Avail Perform

2007 Cumulative UUT by Cause (8970)Catastrophe

0%Power

0%

Natural42%

Personnel0%

Communication0% Equipment

1%

EUTM0%

AUTM57%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

9610 SOCUS CY07 AVAILIBILITY VS PERFORMANCE

99.82%

99.84%

99.86%

99.88%

99.90%

99.92%

99.94%

99.96%

99.98%

100.00%

Boise City, Ok Gillette, WY Searchlight,NV

Las Cruces,NM

Raymondville,TX

Grangeville, LA

Avail Perform

2007 Cumulative UUT by Cause (9610)

EUTM0%

Equipment29%

Catastrophe0%

Power0%

Communication0%

Personnel4%

Natural19%

AUTM48%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

9940 USWC CY07 AVAILIBILITY VS PERFORMANCE

99.75%

99.80%

99.85%

99.90%

99.95%

100.00%

Fallon, NV George, WA Middletown,CA

Searchlight,NV

Avail Perform

2007 Cumulative UUT by Cause (9940)

AUTM15%

EUTM1%

Natural2%

Catastrophe0%

Communication0%

Personnel1%

Power0%

Equipment81%

Natural Communication Personnel Equipment Power Catastrophe AUTM EUTM

9960 NEUS CY07 AVAILIBILITY VS PERFORMANCE

98.60%

98.80%

99.00%

99.20%

99.40%

99.60%

99.80%

100.00%

Seneca,NY

Caribou,ME

Nantucket,MA

CarolinaBeach, NC

Dana, In

Avail Perform

2007 Cumulative UUT by Cause (9960)

EUTM0%

Comunication0%

Personnel0%

Power0%

Catastrophe0%

Equipment1%

Natural12%

AUTM87%

Equipment Comunication Personnel Natural Power Catastrophe AUTM EUTM

9990 NORPAC CY07 AVAILIBILITY VS PERFORMANCE

94.00%

95.00%

96.00%

97.00%

98.00%

99.00%

100.00%

Saint paul, AK Attu, AK Port Clarence,AK

Kodiak, AK

Avail Perform

2007 Cumulative UUT by Cause (9990)

Catastrophe0%

Power0%

Natural0% Personnel

0%

Communication0%

Equipment1%

EUTM2%

AUTM97%

Equipment Communication Personnel Natural Power Catastrophe AUTM EUTM

LORAN-C Availability CY04 - CY 07 YTD

93.00%

94.00%

95.00%

96.00%

97.00%

98.00%

99.00%

100.00%

7960 7980 8290 8970 9610 9940 9960 9990

FY04 Availability FY05 Availability

FY06 Availability FY07 Availability

Accomplishments

• CHAIN PERFORMANCE

• MODERNIZATION – LORAN DATA CHANNEL EVALUATION– TIME OF TRANSMISSION EVALUATION– ST PAUL UPGRADE

Conclusion

Questions