Hog Island Shoal (Rhode Island)
Historical Light List Characteristics
| 1905 | F W. W121/2. | LHB Light List (Atlantic): 201 |
| 1908 | LHB Light List (Atlantic): 214 | |
| 1915 | F W. W12. | USLHS Light List (Atlantic): 284 |
| 1917 | USLHS Light List (Atlantic): 295 | |
| 1920 | USLHS Light List (Atlantic): 311 | |
| 1927 | USLHS Light List (Atlantic): 316 | |
| 1931 | USLHS Light List (Atlantic): 363 | |
| 1935 | USLHS Light List (Atlantic): 412 | |
| 1940 | F W. W13. | USCG Light List (Atlantic): 400 |
| 1943 | USCG Light List (Atlantic): 520 | |
| 1945-1947 | ||
| 1950-1952 | ||
| 1953-1955 | USCG Light List - Vol. I-VI: 525 | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 564 | |
| 1961 | USCG Light List - Vol. I: 564 | |
| 1963-1964 | ||
| 1965 | Iso W 4s. W13. | |
| 1966 | USCG Light List - Vol. I: 737 | |
| 1969-1971 | ||
| 1972 | Iso W 6s. W13. | |
| 1973-1976 | Iso W 6s. W14. | |
| 1977-1979 | Iso W 6s. W12. | |
| 1982 | ||
| 1987 | USCG Light List - Vol. I: 16905 | |
| 1990-1992 | USCG Light List - Vol. I: 16670 | |
| 1993-1996 | USCG Light List - Vol. I: 18145 | |
| 2004 |
Historical Light List Optics and Structures
| 1905 | 4th | N/A | 531/2 | Black, cylindrical, iron pier, supporting a white gallery, surmounted by a white, conical, iron tower; white conical roof surrounds lower part of tower and covers gallery; lantern black. | LHB Light List (Atlantic): 201 |
| 1908 | Black, cylindrical, iron pier, supporting a white gallery, surmounted by a white, conical, iron tower; white conical roof surrounds lower part of tower and covers gallery; black lantern. | LHB Light List (Atlantic): 214 | |||
| 1915 | N/A | 54 | Black; conical tower on cylindrical pier. | USLHS Light List (Atlantic): 284 | |
| 1917 | White conical tower, on black cylindrical pier. | USLHS Light List (Atlantic): 295 | |||
| 1920 | USLHS Light List (Atlantic): 311 | ||||
| 1927 | USLHS Light List (Atlantic): 316 | ||||
| 1931 | 4 iov | White conical tower on black cylindrical pier. | USLHS Light List (Atlantic): 363 | ||
| 1935 | USLHS Light List (Atlantic): 412 | ||||
| 1940 | 4 a | USCG Light List (Atlantic): 400 | |||
| 1943 | 4 e | USCG Light List (Atlantic): 520 | |||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 525 | |||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 564 | ||||
| 1961 | USCG Light List - Vol. I: 564 | ||||
| 1963-1965 | |||||
| 1966 | USCG Light List - Vol. I: 737 | ||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | USCG Light List - Vol. I: 16905 | ||||
| 1990-1992 | USCG Light List - Vol. I: 16670 | ||||
| 1993-1996 | USCG Light List - Vol. I: 18145 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1905 | Compressed-air siren; blasts 3 sec., silent intervals 10 sec. | None | LHB Light List (Atlantic): 201 |
| 1908 | LHB Light List (Atlantic): 214 | ||
| 1915 | Air siren: blast 3 sec., silent 10 sec. | USLHS Light List (Atlantic): 284 | |
| 1917 | USLHS Light List (Atlantic): 295 | ||
| 1920 | USLHS Light List (Atlantic): 311 | ||
| 1927 | USLHS Light List (Atlantic): 316 | ||
| 1931 | SIREN, air: blast 3 sec., silent 10 sec. | USLHS Light List (Atlantic): 363 | |
| 1935 | USLHS Light List (Atlantic): 412 | ||
| 1940 | USCG Light List (Atlantic): 400 | ||
| 1943 | SIREN, electric: blast 3 sec., silent 10 sec. | USCG Light List (Atlantic): 520 | |
| 1945-1947 | |||
| 1950-1951 | |||
| 1952 | SIREN, electric; blast 3 sec., silent 10 sec. | ||
| 1953-1955 | SIREN: 1 blast ev 13s (3sbl). | USCG Light List - Vol. I-VI: 525 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 564 | ||
| 1961 | USCG Light List - Vol. I: 564 | ||
| 1963-1964 | |||
| 1965 | HORN, diaphragm; gp of 2 blasts ev 30s (2sbl-2ssi-2sbl-24ssi). | ||
| 1966 | USCG Light List - Vol. I: 737 | ||
| 1969-1972 | HORN, diaphragm; 2 blasts ev 30s (2sbl-2ssi-2sbl-24ssi). | ||
| 1973-1975 | HORN, 2 blasts ev 30s (2sbl-2ssi-2sbl-24ssi). | ||
| 1976-1979 | HORN: 2 blasts ev 30s (2sbl-2ssi-2sbl-24ssi). | ||
| 1982 | HORN: 2 blasts ev 30s (2s bl-2s si-2s bl-24s si). | ||
| 1987 | HORN: 2 blasts ev 30s (2s bl-2s si-2s bl-24s si). | USCG Light List - Vol. I: 16905 | |
| 1990-1992 | USCG Light List - Vol. I: 16670 | ||
| 1993-1996 | USCG Light List - Vol. I: 18145 | ||
| 2004 | HORN: 2 blasts ev 30s (2s bl-2s si-2s bl-24s si). |
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1901 - Present |