U.S. COAST GUARDNAVIGATION CENTER

FY 2003 LORAN PERFORMANCELCDR MAX CARUSO, NAVCEN OPS

FY03 LORAN-C Performance

Another year of recapitalization, system modernization and solar activity!

99.18% 99.70% 99.80% 99.76% 99.75% 99.87% 99.72% 99.90% 99.71%

98.00%98.20%98.40%98.60%98.80%99.00%99.20%99.40%99.60%99.80%

100.00%

FY03 CHAIN AVAILABILITY

FY03 STATION AVAILABILITY99.930%99.870%99.930%99.890%99.840%99.870%

99.870%

99.429%

99.83%

98.000%

98.200%98.400%

98.600%

98.800%99.000%

99.200%

99.400%

99.600%99.800%

100.000%

GOA-7960 SEUS-7980

NOCUS-8290

GLKS-8970

SOCUS-9610

USWC-9940

NEUS-9960

NORPAC-9990

LORAN-CTOTALFY03

FY03 STATION AVAILABILITY without “AUTM & Natural Causes”

99.987%99.980%99.980%99.980%99.985%99.998%99.976%99.930% 99.98%

98.000%

98.200%

98.400%98.600%

98.800%

99.000%

99.200%

99.400%99.600%

99.800%

100.000%

GOA-7960

SEUS-7980

NOCUS-8290

GLKS-8970

SOCUS-9610

USWC-9940

NEUS-9960

NORPAC-9990

LORAN-CTOTALFY03

FY03 Review

• Chain / baseline availability : 99.71%

• Station availability: 99.83%

• Excluding authorized maintenance & solar / weather: 99.98%

• Many major improvement projects

• Major solar impacts

FY04 Preview

• Major solar impacts:– Total solar blink for 7960 in FY03: 9919 min– Total solar for 7960 in Oct 03: 6827 min

• Continued system improvements: – Improved timing suite– New solid state transmitters

Thanks to NAVCEN personnel:

• LT Luci Bookhammer

• LT Bill Broome

• LT Jim Bailey

• CWO Scott McDonald

• CWO Mike Wills

• ET1 Rich Nutting

• ET1 Wynne

Your Questions?

99.46% 99.95% 99.97% 99.96% 99.96% 99.97% 99.98% 99.88% 99.89%

98.00%

98.20%

98.40%98.60%

98.80%

99.00%

99.20%

99.40%99.60%

99.80%

100.00%

GOA-7960 SEUS-7980

NOCUS-8290

GLKS-8970

SOCUS-9610

USWC-9940

NEUS-9960

NORPAC-9990

LORAN-CTOTALFY02

FY02 AVAILABILITY (less AUTM)

FY02 AVAILABILITY (less AUTM & Solar)

99.978%99.979%99.981%99.970%99.965%99.983%99.957%99.995% 99.98%

98.000%

98.200%

98.400%98.600%

98.800%

99.000%

99.200%

99.400%99.600%

99.800%

100.000%

GOA-7960

SEUS-7980

NOCUS-8290

GLKS-8970

SOCUS-9610

USWC-9940

NEUS-9960

NORPAC-9990

LORAN-CTOTALFY02

Many thanks to:

• LSU

• LORSTA George crew

• Megapulse

• Timing solutions

• NAVCEN ops & sys mgmt team

For a job well done at LORSTA George

North American Loran-C System

DESTIN

MIDLAND

WHIDBEY ISLAND

FAIRBANKS

COLD BAY

GEORGE

NARROW CAPE

SHOAL COVE

GILLETE

NANTUCKET

CARIBOU

LSU

GREAT FALLS

GRAND JUNCTION

GRANGEVILLEMALONE

CAROLINA BEACH

MONTAGUE

LUMSDEN

COMFORT COVE

ST. ANTHONY

DUNBAR FOREST

BAUDETTE

HAVRESPOKANE

PORT HARDY

SAND SPIT

JUNEAU

TOK

GALENA

PORT CLARENCE

SPRUCE CAPE

ST. PAULPETROPAVLOVSK, RUSSIA

ALEXANDROVSK, RUSSIA

WILLIAMS LAKE

MEDICAL LAKE

PT. PINOS

NAVCENDETPETALUMA

PT. CABRILLO

MIDDLETOWN

FALLON

SEARCHLIGHT

LAS CRUCES

BISMARK

BOISE CITY

LITTLE ROCK

DANA

NEW ORLEANS

JUPITER INLET

MAYPORT

NAVCENALEXANDRIA

PLUMBROOK SANDY HOOK

CAPE ELIZABETHSENECA

CAPE RACE

FOX HARBOR

RAYMONDVILLE

ATTU

CONTROL SITE

TRANSMITTER STATION

PCMS SITE

USNO Monitor