Site Survey:

Construction Date

Constructed by:

Established:

LORAN A: 1964

LORAN C: 1963

Disestablished:

LORAN A: MAR 1997
LORAN C: SEP 1993

Operated by:

LORAN A:
USCG 1964 – 31 DEC 1977
JAPAN 1 JAN 1978 – 10 MAR 1997

Chain:

LORAN A:

LORAN C:
PACIFIC NORTHWEST
KORAN

Station Letter designation:

LORAN A: 2H5, 2H6, 2S7 – “E”

LORAN C:
PACIFIC NORTHWEST
SS-3, 9970, “X”
7730, “Y”

KORAN
5970, “Z”

Station code name:

Station Unit Number:

14-Z40179

Radio Call Sign:

Station aka:

On-air testing date:

LORAN A: 1964

LORAN C:
PACIFIC NORTHWEST:
25 JUL 1963 - HOKKAIDO, IWO JIMA, MARCUS, YAP
17 MAR 1964 - HOKKAIDO, MARCUS

21 DEC 1964 - HOKKAIDO, IWO JIMA, MARCUS, YAP

Operational date:

LORAN A: 1964

LORAN C: 21 JAN 1964

Operations Ceased:

LORAN A: 10 MAR 1997
LORAN C: SEP 1993

Station Operation:

LORAN A:
1964 – 1977 - Triple SLAVE/SECONDARY (TS)
1977 – 1997 – Single MASTER/Double SECONDARY (SM, DS)

LORAN C:
SLAVE/SECONDARY – “X”

Station pair:

LORAN A:
2H5 - MIYAKO JIMA 1964 – MAR 1997
2H6 – IWO JIMA 1964 – 1977
2S7 – NOMAIKE 1964 – 1997
2H6 – HACHIJO 1978 – 1997

LORAN C:
PACIFIC NORTHWEST
SS-3, 9970  - HOKKAIDO, IWO JIMA, MARCUS, YAP
7930 - HOKKAIDO, MARCUS, YAP
9970 - HOKKAIDO, IWO JIMA, MARCUS, YAP*,
            BARRIGADA* Replaced YAP in 1987

KORAN
5970 - POHANG, HOKKAIDO, KWANJU, OSAN

Loran Rate:

LORAN A: 2S7, 2H5, 2H6

LORAN C:
PACIFIC NORTHWEST: SS-3, 9970, 7930

KORAN, 5970

On-Air:

LORAN A:
2H5, 1964 MIYAKO JIMA
2H6, 1964 IWO JIMA
2S7, 1964 NOMAIKE
2H6, 1978 HACHIJO

LORAN C:
SS-3, 21 JAN 1964 - HOKKAIDO, IWO JIMA, MARCUS, YAP
SS-3, 25 MAY 1964 - HOKKAIDO, MARCUS
SS-3, 1 JAN 1965 - HOKKAIDO, IWO JIMA, MARCUS, YAP
9970, 25 FEB 1975 - HOKKAIDO, IWO JIMA, MARCUS, YAP
7930. 210300Z FEB 1981 - HOKKAIDO, MARCUS, YAP
9970, 310700Z MAR 1981 - HOKKAIDO, IWO JIMA, MARCUS,
                                              YAP
9970, 1987 - HOKKAIDO, IWO JIMA, MARCUS, BARRIGADA

Off-Air

LORAN A:
2H5, 10 MAR 1997 MIYAKO JIMA
2H6, 312400Z DEC 1977 IWO JIMA
2S7, 10 MAR 1997 NOMAIKE
2H6, 10 MAR 1997 HACHIJO

LORAN C:
SS-3, MAR 1964 Tower fell at IWO & YAP
SS-3, 21 DEC 1964 – Tower erected at IWO & YAP
SS-3, 25 FEB 1975 – Change chain designation
9970, 202300Z FEB 1981 – Tower maintenance @ IWO
7930, 310300Z MAR 1981 – Tower maintenance complete @ IWO
9970, 1987 – YAP Off air replaced by BARRIGADA
9970, SEP 1993

Monitor Rate:

Equipment:

FPN-44/46, 625ft Twr, 1MW
Clarinet Pilgrim installed 1968

Personnel Allowance:

Miscellaneous:

LORAN A:
1964 - Station operations transferred from Ichi Hanare
LORAN C:
1964 Chain reconfigured due to Iwo and Yap tower failures

Commanding Officers / Officers in Charge

LORAN A/C:
1st CO: LT Bob Gardner 63-64
CO: LTJG David Lyons 1970-71
CO: LTJG Thomas Cenna 1971-4/72
CO: LTJG Terrance M Edwards 4/72 - 4/73

LORAN C:
CO: LTJG Wayne Collins 80-81
CO: LTJG Sue Englebert 1985-86
CO: LTJG Hoffman 1986-87
CO: LTJG Hung M Nguyen 1988-89
CO: LTJG Oscar Stallings 1993
CO: LTJG Peter Gautier – year unknown