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 NoneSubmarine 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