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LORAN STATION YAP ISLAND

LORAN A: 09 32 56.32 N 138 09 38.74 E (1960 Mercury Datum)
LORAN C: 09 32 45.660 N 138 09 55.230 E

Pictures:

Fact Sheet:

Site Survey:

 

Construction Date

 

Constructed by:

 

Established:

12 SEPT 1964 - commissioned
2 OCT 1964 - Station dedicated

Disestablished:

1987

Operated by:

USCG

Chain:

LORAN C: NORTHWEST PACIFIC

Station Letter designation:

LORAN A:  2L1, 2L2: “Y”
LORAN C:  “Z”

Station code name:

LORAN C: PACE III (1962-SEASIA Chain)/Cancelled 1963

Station Unit Number:

Z40180

Station AKA:

YAP

Radio Call Sign:

NRV-7
Ham - KC6BY

On-air testing date:

LORAN C:  JAN 1965

Operational date:

LORAN A: 01 FEB 1965
LORAN C: 1965

Operations Ceased:

LORAN A: 312400Z DEC 1977
LORAN C: 1987

Station Operation:

LORAN A: Double MASTER
LORAN C:Single SLAVE/SECONARY “Z”

Station pair:

LORAN A:
2L1, ANGUAR
2L2, GUAM

LORAN C:
SS-3, GESASHI, HOKKAIDO, IWO JIMA, MARCUS
9970, GESASHI, HOKKAIDO, IWO JIMA, MARCUS
7930, GESASHI, HOKKAIDO, MARCUS
9970, GESASHI, HOKKAIDO, IWO JIMA, MARCUS

Loran Rate:

LORAN A: 2L1, 2L2 
LORAN C: SS-3, 9970, 7930

On-Air:

LORAN A:
2L1, 01 FEB 1965
2L2, 01 FEB 1965
LORAN C:
SS-3, JAN 1965
9970, 25 FEB 1975
7930, 210300Z FEB 81 – Chain reconfigure due to IWO twr maint
9970, 310700Z MAR 81 – IWO BACK ON-AIR

Off-Air

LORAN A:
2L1, 312400Z DEC 1977
2L2, 312400Z DEC 1977
LORAN C:
SS-3, 25 FEB 1975
9970, 202300Z FEB 1981
7930, 310300Z MAR 1981
9970, 1987 YAP Ceased Loran Ops

Monitor Rate:

 

Equipment:

LORAN A:
AN/FPN-30, T325B, AM-1700 AN/FPN-3A

LORAN C:
Construction started Dec 1963 and completed Feb 1965
Twr fell 5 MAY 1964 @ a height of 780 ft
Chain reconfigured in 1964 due to Iwo and Yap tower failures\
Early Jan 1965 the 1000ft twr completed
1965: AN/FPN-45/46, 2500Kw
Antenna Type: LORAN A:

LORAN C:
1000ft – Dresser-Ideco, Model 20097 1964 – 05 MAY 1964
1000ft – Dresser-Ideco, Model 20097 JAN 1965

Personnel Allowance:

 

Miscellaneous:

Located on Gagil-Tomil Island
4 APR 1964 – Tower structurally unstable
5 MAY 1964 – Tower collapse
1967: Named Change to YAP ISLAND from YAP
1971 - CO relieved for cause

Commanding Officers /
Officers in Charge

LT John Ehrmann Construction OINC 1964

LORAN A/C
CO: LT John Erhmann 1964
CO: LTJG Powers 1964 -1965
CO: LTJG Morgan 1965 -1966
CO: LTJG Jeff Bull ? - NOV 1966
CO: LTJG Walter Donaghy NOV 1966 - 1967
CO: LTJG Rutherford 1967 - 1968
CO: LTJG Marcum 1968 - 1969
CO: LTJG Callis 1969 - 1970
CO: LTJG Shattie 1970 - OCT 1971
CO: LTJG Guy Taylor NOV 1971 - NOV 1972
CO: LTJG Douglas Kroll NOV 1972 - NOV 1973
CO: LTJG Charles W. Belsky NOV 1973 - 1974
CO: LCDR Paul Hooper 1975 - 1976
CO: LT Dave Blomberg 1976 - 1977
CO: LTJG D. A. Stuart 1977 - 1978

LORAN C:
CO: LTJG Robert Zimmer 1978 - 1979
CO: LT John R Williams 1979 - 1980
CO: LTJG Fitzpatrick 1980 - 1981
CO: LT Robert Garrett 1981 - MAY 1982
CO: LTJG Jay Ellis MAY1982 - JUN 1983
CO: LTJG Will Agen JUN 1983 - 1984
CO: LTJG Rodriquez 1985 - 1986
Last CO: LT Michael Hazel 1986 - 1987

Pictures:

Click on picture for larger image

Yap from Google Earth

Picture from google earth.

Photos below were contributed by Carl MacDonald

Lorsta Yap Main Building

The main building, off in the distance the water storage tanks and the loran "C" tower and transmitter building,


Electronics and engineering building, basketball court, etc

Looking back at the buildings from near the loran "C" tower

Station Patch c./1972

Two photos were taken from the 125 foot tall Loran "A" tower. 

Thanks Mac!

Station c./1976

The below photos were contributed by Walter Schroter c./1986-87


MKC Schroter and SSC Hilliard Japanese Construction Equipment


MKC Schroter Japanese Zero


A long way from home


CAT D398 ready for Log Flight


Engineering Group


Decommissioning Crew

Thanks Chief!

 

 

Photo contributed by Angus MacFeeley


c./1976

Thanks Gus! 

The below photos were contributed by Jay Ellis (CO 1982-83)
Note: Both are of small size.


L to R: SK2 Les Taylor, UNK, HS1 Glen Jones


L to R: UNK, HS1 Glen Jones, LT Jay Ellis (CO), CWO Jerry Walker (STO)

Thanks Jay!

The below photos have been contributed by Doug Kroll (CO Nov 1972 - Nov 73)


c./ 1973


Change of Command Nov 1973


Change of Command Nov 1973

 
LTJG Kroll with traditional High Chief of Yap Islands


Quarterdeck


Tradition Yapeze Dance


Loran C Station


WWII Japanese Fighter

Yap Stone Money

Thanks Doug!