Prudence Island (Rhode Island)
Historical Light List Characteristics
| 1858 | F W. W10. | LHB Light List (US): 116 |
| 1860 | LHB Light List (US): 104 | |
| 1865-1866 | LHB Light List (All Coasts): 104 | |
| 1868 | LHB Light List (All Coasts): 105 | |
| 1870 | F W. W11. | LHB Light List (All Coasts): 109 |
| 1878-1879 | LHB Light List (All Coasts): 134 | |
| 1886 | LHB Light List (All Coasts): 137 | |
| 1888 | LHB Light List (All Coasts): 143 | |
| 1893 | LHB Light List (Atlantic): 157 | |
| 1898 | F W. W101/2. | LHB Light List (Atlantic): 183 |
| 1899 | LHB Light List (Atlantic): 186 | |
| 1905 | LHB Light List (Atlantic): 200 | |
| 1908 | LHB Light List (Atlantic): 213 | |
| 1915 | F W. W11. | USLHS Light List (Atlantic): 283 |
| 1917 | USLHS Light List (Atlantic): 294 | |
| 1920 | USLHS Light List (Atlantic): 310 | |
| 1927 | Alt Oc W, Alt Fl R, 5s. W11 R11. lt 2.5, ec 1.15, fl 0.2, ec 1.15. | USLHS Light List (Atlantic): 315 |
| 1931 | USLHS Light List (Atlantic): 410 | |
| 1935 | Alt Oc W, Alt Fl G, 5s. W11 G11. lt 2.5, ec 1.15, fl 0.2, ec 1.15. | |
| 1940 | Iso G 4s. G10. | USCG Light List (Atlantic): 398 |
| 1943 | USCG Light List (Atlantic): 518 | |
| 1945-1947 | ||
| 1950 | ||
| 1951-1952 | Fl G 6s. G10. fl 2. | |
| 1953-1955 | USCG Light List - Vol. I-VI: 523 | |
| 1957 | ||
| 1959-1960 | USCG Light List - Vol. I-V: 562 | |
| 1961 | USCG Light List - Vol. I: 562 | |
| 1963-1965 | ||
| 1966 | USCG Light List - Vol. I: 734 | |
| 1969-1971 | ||
| 1972 | Fl G 6s. G10. fl 1. | |
| 1973-1978 | Fl G 6s. G10. | |
| 1979 | Fl G 6s. G9. | |
| 1982 | ||
| 1987 | USCG Light List - Vol. I: 16885 | |
| 1990-1992 | Fl G 6s. G6. | USCG Light List - Vol. I: 16650 |
| 1993-1996 | USCG Light List - Vol. I: 18125 | |
| 2004 |
Historical Light List Optics and Structures
| 1858 | 5th | 25 | 30 | N/A | LHB Light List (US): 116 |
| 1860 | LHB Light List (US): 104 | ||||
| 1865 | LHB Light List (All Coasts): 104 | ||||
| 1866 | |||||
| 1868 | LHB Light List (All Coasts): 105 | ||||
| 1870 | An octagonal stone tower; whitewashed. | LHB Light List (All Coasts): 109 | |||
| 1878-1879 | LHB Light List (All Coasts): 134 | ||||
| 1886 | White octagonal tower. | LHB Light List (All Coasts): 137 | |||
| 1888 | An octagonal stone tower; whitewashed. | LHB Light List (All Coasts): 143 | |||
| 1893 | White octagonal tower. | LHB Light List (Atlantic): 157 | |||
| 1898 | 28 | LHB Light List (Atlantic): 183 | |||
| 1899 | LHB Light List (Atlantic): 186 | ||||
| 1905 | White octagonal tower; white fog-signal structure northeasterly of tower. | LHB Light List (Atlantic): 200 | |||
| 1908 | White octagonal tower; white fog-signal structure NE'ly of tower. | LHB Light List (Atlantic): 213 | |||
| 1915 | N/A | 30 | White; octagonal tower. | USLHS Light List (Atlantic): 283 | |
| 1917 | White octagonal tower. | USLHS Light List (Atlantic): 294 | |||
| 1920 | USLHS Light List (Atlantic): 310 | ||||
| 1927 | USLHS Light List (Atlantic): 315 | ||||
| 1931 | 4 iov | USLHS Light List (Atlantic): 410 | |||
| 1935 | |||||
| 1940 | 4 e | N/A | USCG Light List (Atlantic): 398 | ||
| 1943 | USCG Light List (Atlantic): 518 | ||||
| 1945-1947 | |||||
| 1950-1952 | |||||
| 1953-1955 | N/A | USCG Light List - Vol. I-VI: 523 | |||
| 1957 | |||||
| 1959-1960 | USCG Light List - Vol. I-V: 562 | ||||
| 1961 | USCG Light List - Vol. I: 562 | ||||
| 1963-1965 | |||||
| 1966 | USCG Light List - Vol. I: 734 | ||||
| 1969-1979 | |||||
| 1982 | |||||
| 1987 | USCG Light List - Vol. I: 16885 | ||||
| 1990-1992 | USCG Light List - Vol. I: 16650 | ||||
| 1993-1996 | USCG Light List - Vol. I: 18125 | ||||
| 2004 |
Historical Light List Audible Fog Signals
| 1858 | None | None | LHB Light List (US): 116 |
| 1860 | LHB Light List (US): 104 | ||
| 1865-1866 | LHB Light List (All Coasts): 104 | ||
| 1868 | LHB Light List (All Coasts): 105 | ||
| 1870 | LHB Light List (All Coasts): 109 | ||
| 1878-1879 | LHB Light List (All Coasts): 134 | ||
| 1886 | Bell struck by machinery every 15 sec. | LHB Light List (All Coasts): 137 | |
| 1888 | LHB Light List (All Coasts): 143 | ||
| 1893 | LHB Light List (Atlantic): 157 | ||
| 1898 | LHB Light List (Atlantic): 183 | ||
| 1899 | LHB Light List (Atlantic): 186 | ||
| 1905 | LHB Light List (Atlantic): 200 | ||
| 1908 | Bell struck by machinery a single blow every 15 sec. | LHB Light List (Atlantic): 213 | |
| 1915 | Bell; 1 stroke every 15 sec. | USLHS Light List (Atlantic): 283 | |
| 1917 | USLHS Light List (Atlantic): 294 | ||
| 1920 | USLHS Light List (Atlantic): 310 | ||
| 1927 | USLHS Light List (Atlantic): 315 | ||
| 1931 | BELL; 1 stroke every 15 sec. | USLHS Light List (Atlantic): 410 | |
| 1935 | |||
| 1940 | USCG Light List (Atlantic): 398 | ||
| 1943 | USCG Light List (Atlantic): 518 | ||
| 1945-1947 | |||
| 1950 | |||
| 1951-1952 | BELL, electric; 1 stroke every 15 sec. | ||
| 1953-1955 | BELL: 1 stroke ev 15s. | USCG Light List - Vol. I-VI: 523 | |
| 1957 | |||
| 1959-1960 | USCG Light List - Vol. I-V: 562 | ||
| 1961 | USCG Light List - Vol. I: 562 | ||
| 1963-1965 | HORN, diaphragm; 1 blast ev 15s (2sbl). | ||
| 1966 | USCG Light List - Vol. I: 734 | ||
| 1969-1972 | |||
| 1973-1975 | HORN, 1 blast ev 15s (2sbl). | ||
| 1976-1979 | HORN: 1 blast ev 15s (2sbl). | ||
| 1982 | HORN: 1 blast ev 15s (2s bl). | ||
| 1987 | HORN: 1 blast ev 15s (2s bl). | USCG Light List - Vol. I: 16885 | |
| 1990-1992 | None | USCG Light List - Vol. I: 16650 | |
| 1993-1996 | USCG Light List - Vol. I: 18125 | ||
| 2004 |
 |
1852 - Present |