Lighthouses and Lightships With Fog Signals for North Atlantic (1927)
| 6 | - Siren | |
| 17 | - Whistle |
Lighthouses with Audible Fog Signals
| Bartlett Reef Lightship | CT | 10-inch air whistle: Blast 2 sec. Silent 28 sec. | N41 16.000 | W072 08.000 |
| Cornfield Point Lightship | CT | 1st-cl. air siren: Blast 2 sec. Silent 13 sec. | N41 12.900 | W072 22.200 |
| Fenwick Island Shoal Lightship | DE | 1st-cl. air siren: Blast 3 sec. Silent 17 sec. | N38 27.600 | W074 46.400 |
| Overfalls Lightship | DE | 10-inch air whistle: Blast 3 sec. Silent 27 sec. | N38 48.000 | W075 01.400 |
| Boston Lightship | MA | 1st-cl. air siren: Blast 3 sec. Silent 17 sec. | N42 20.000 | W070 45.000 |
| Cross Rip Lightship | MA | 12-inch steam chime whistle: Blast 3 sec. Silent 12 sec. | N41 26.800 | W070 17.500 |
| Great Round Shoal Lightship | MA | 12-inch steam chime whistle: Blast 5 sec. Silent 55 sec. | N41 24.000 | W069 55.000 |
| Handkerchief Shoal Lightship | MA | 1st-cl. air siren: Blast 4 sec. Silent 26 sec. | N41 29.200 | W070 04.000 |
| Hedge Fence Lightship | MA | 1st-cl. air siren; gp. 2 blasts every 60 sec.: 1st blast 3 sec. Silent 5 sec. 2d blast 3 sec. Silent 49 sec. | N41 28.000 | W070 29.000 |
| Hen and Chickens Lightship | MA | 10-inch air whistle: Blast 2 sec. Silent 18 sec. | N41 27.000 | W071 01.100 |
| Nantucket Shoals Lightship | MA | 12-inch steam chime whistle: Blast 5 sec. Silent 25 sec. | N40 37.000 | W069 37.100 |
| Pollock Rip Lightship | MA | 12-inch steam chime whistle: Blast 5 sec. Silent 25 sec. | N41 36.100 | W069 51.100 |
| Stonehorse Shoal Lightship | MA | 10-inch steam chime whistle: Blast 2 sec. Silent 13 sec. | N41 32.800 | W069 59.100 |
| Vineyard Sound Lightship | MA | 12-inch steam chime whistle: Blast 6 sec. Silent 45 sec. | N41 22.600 | W071 00.200 |
| Portland Lightship | ME | 12-inch steam chime whistle: Blast 3 sec. Silent 27 sec. | N43 31.600 | W070 05.500 |
| Ambrose Channel Lightship | NJ | 12-inch steam whistle: Blast 3 sec. Silent 12 sec. | N40 28.000 | W073 50.000 |
| Five Fathom Bank Lightship | NJ | 12-inch steam chime whistle: Blast 4 sec. Silent 56 sec. | N38 47.300 | W074 34.600 |
| Northeast End Lightship | NJ | 1st-cl. steam siren; gp. 2 blasts every 30 sec.: 1st blast 2 sec. Silent 2 sec. 2d blast 2 sec. Silent 24 sec. | N38 57.800 | W074 29.600 |
| Scotland Lightship | NJ | 12-inch steam whistle; gp. 2 blasts every 20 sec.: 1st Blast 2 sec. Silent 2 sec. 2d blast 2 sec. Silent 14 sec. | N40 26.600 | W073 55.200 |
| Fire Island Lightship | NY | 12-inch steam chime whistle; gp. 2 blasts every 30 sec.: 1st blast 3 sec. Silent 4 sec. 2d blast 3 sec. Silent 20 sec. | N40 28.700 | W073 11.400 |
| Brenton Reef Lightship | RI | 10-inch and 6-inch air whistles; gp. 2 blasts every 30 sec.: Blast (low tone) 3 sec. Blast (higher tone) 3 sec. Silent 24 sec. | N41 25.600 | W071 22.600 |
| Chesapeake Lightship | VA | 12-inch steam chime whistle: Blast 3 sec. Silent 17 sec. | N37 05.000 | W075 40.300 |
| Winter Quarter Shoal Lightship | VA | 12-inch steam chime whistle: Blast 3 sec. Silent 57 sec. | N37 55.500 | W074 56.400 |