520,704 3,535,451 Lighthouses, beacons, and lightships 7 373 Cost of | | | | | | | |revolutions. | | | | | |Number of | | | Dewit Clinton| 230|28 |5·5 |21 |13·7|36 |1 |65 | 10 | -- | Swallow | 233|22·5|3·75|24 |11 |30 |1 |46 | -- | Swallow | 233|22·5|3·75|24 |11 |30 |1 |48 | 11 |24 | -- |27 | -- |27 | -- | -- | Albany | 212|26 | -- |19 | .