
The National Historic Landmark is the last of the screw-pile lighthouses left in its original location, five nautical miles from Annapolis, Md., in the Chesapeake Bay.
Tour boats will leave the Annapolis Maritime Museum docks at 8 a.m., 12 p.m. and 3 p.m., and are slated for alternate Sundays: June 28, July 12, July 26, August 9 and August 23. There will be three tours each day and includes an hour-long docent-led tour inside the lighthouse.
The tour boat will depart from the Museum docks on Back Creek. The boat is the motor vessel Sharps Island, owned and operated by Capt. Mike Richards of Chesapeake Lights, Inc. Each tour is limited to 18 passengers. Space is limited and reservations are required. Call the Annapolis Maritime Museum at 410-295-0104 or visit the Web site www.amaritime.org. The cost is $70 per person.
According to Wikipedia, screw-pile lighthouses stand on piles that are screwed into sandy or muddy sea or river bottoms.
In the United States, screw-pile lighthouses proliferated in the Chesapeake Bay due to its estuarial soft bottom. North Carolina's sounds and river entrances were also once home to many screw-pile lights. The characteristic design is a one and a half story hexagonal wooden building with dormers and a cupola light room.