Great Round Shoal Lightship Station (MA)
Historical Light List Characteristics
1893 | Light 1: F W. W12. Light 2: F W. W12. | LHB Light List (Atlantic): 112 |
1898 | LHB Light List (Atlantic): 139 | |
1899 | LHB Light List (Atlantic): 143 | |
1905 | LHB Light List (Atlantic): 152 | |
1908 | LHB Light List (Atlantic): 160 | |
1915 | Light 1: F W. W13 (320 cp). Light 2: F W. W13 (320 cp). | USLHS Light List (Atlantic): 204 |
1917 | Light 1: F W. W11 (320 cp). Light 2: F W. W11 (320 cp). | USLHS Light List (Atlantic): 210 |
1920 | Iso W 2s. W11 (480 cp). | USLHS Light List (Atlantic): 215 |
1927 | Light 1: F W. W11 (320 cp). Light 2: F W. W11 (320 cp). | USLHS Light List (Atlantic): 216 |
1931 | Iso W 10s. W14 (3,000 cp). Fixed white light if occulting light is extinguished. Riding light F. W. 40 cp., on forestay. | USLHS Light List (Atlantic): 256 |
Historical Light List Optics and Structures
1893 | Reflector | Reflector | N/A | 45 | Two masts, schooner-rigged, no bowsprit; black mastheads with lead-colored iron day-mark at each. Hull, lead-color, with "GREAT ROUND SHOAL" in large black letters on each side and "42" in large black figures on each bow and on the stern. | To the southward of Great Round Shoal, Mass. | LHB Light List (Atlantic): 112 |
1898 | Two masts, schooner-rigged, no bowsprit; lead-colored iron day-mark at each masthead. Hull, lead-color, with "GREAT ROUND SHOAL" in black on each side and "42" in black on each bow and on the stern. | Moored in 72 feet of water to the southward of Great Round Shoal, Mass. | LHB Light List (Atlantic): 139 | ||||
1899 | LHB Light List (Atlantic): 143 | ||||||
1905 | Two masts, schooner-rigged, no bowsprit; lead-colored, hoop-iron daymark at each masthead. Hull, lead-color, with "GREAT ROUND SHOAL" in black on each side and "42" in black on each bow and on the stern. A black smokestack and the fog signal are between the masts. | Moored in 72 feet of water to the southward of Great Round Shoal, Mass., entrance to Nantucket Sound from the eastward. | LHB Light List (Atlantic): 152 | ||||
1908 | Two masts, schooner-rigged, no bowsprit; lead-colored, hoop-iron daymark at each masthead; lead-color hull, with "GREAT ROUND SHOAL" in black on each side and "42" in black on each bow and on the stern; black smokestack and the fog signal are between the masts. | Moored in 72 feet of water, to the S'd of Great Round Shoal, Mass., entrance to Nantucket Sound from the E'd. | LHB Light List (Atlantic): 160 | ||||
1915 | N/A | N/A | 50 | Lead-colored hull; "GREAT ROUND" on sides, two masts, lead-colored circular grating at each masthead. | In 12 fathoms, south of shoal, entrance to sound from eastward. | USLHS Light List (Atlantic): 204 | |
1917 | Lead-colored hull, "GREAT ROUND" on sides; two masts, lead-colored circular grating at each masthead. | USLHS Light List (Atlantic): 210 | |||||
1920 | N/A | Black hull, "GREAT ROUND" on sides; two masts, black gallery at each masthead. | USLHS Light List (Atlantic): 215 | ||||
1927 | 50 | Black hull, "GREAT ROUND" on sides; two masts, black circular grating at each masthead. | USLHS Light List (Atlantic): 216 | ||||
1931 | 375 mm ei | NA | NA | In 72 feet, south of shoal, entrance to sound from eastward. | USLHS Light List (Atlantic): 256 |
Historical Light List Audible Fog Signals
1893 | 12-inch steam whistle; blasts 5 sec., silent intervals 55 sec. | If whistle be disabled a bell will be rung by hand. | LHB Light List (Atlantic): 112 |
1898 | 10-inch whistle operated by compressed air; blasts 5 sec., silent intervals 55 sec. | LHB Light List (Atlantic): 139 | |
1899 | LHB Light List (Atlantic): 143 | ||
1905 | 10-inch compressed-air whistle; blasts 5 sec., silent intervals 55 sec. | LHB Light List (Atlantic): 152 | |
1908 | LHB Light List (Atlantic): 160 | ||
1915 | 12-inch steam whistle: Blast 5 sec. Silent 55 sec. | Bell (hand) if whistle is disabled. | USLHS Light List (Atlantic): 204 |
1917 | USLHS Light List (Atlantic): 210 | ||
1920 | 12-inch steam chime whistle: Blast 5 sec. Silent 55 sec. | USLHS Light List (Atlantic): 215 | |
1927 | USLHS Light List (Atlantic): 216 | ||
1931 | WHISTLE, 12-inch steam chime: Blast 5 sec., silent 55 sec. | Bell, hand, if whistle is disabled. | USLHS Light List (Atlantic): 256 |
Historical Light List Other Signals
1927 | None | Submarine bell; gp. 2 strokes ("2") every 7 sec. | USLHS Light List (Atlantic): 216 |
1931 | SUBMARINE BELL; gp. 2 strokes every 7 sec. | USLHS Light List (Atlantic): 256 |
1890 - 1932 |