Beavertail Light Jamestown RI

 Beavertail Light (click for complete history) located on the southern tip of Connanicut Island is the third oldest light in the US built in 1749. The original wooden tower designed by Architect Peter Harrison burned, was rebuilt and later destroyed by retreating British troops. In this view you can see the 45 ft granite light tower built in 1856 with the smaller fog signal building on the left and the keeper's quarters on the right.

The fog signal building has been re-purposed as an aquarium with RI DEM naturalist tours offered during the summer months. The restored keeper's quarters are a museum of the history of the light station run by the Beavertail Lighthouse Museum Association. The grounds are open to the public including the restored base of the original wooden tower which stands just to the south of the current buildings on the exposed rocky ledge.

The US Coast Guard maintains the light and fog signal as an aid to navigation. The distinctive architecture is a group of simple square or rectangular white painted masonry structures with recessed openings and red shingle roofs. The tower is made from interlocking granite blocks with a black metal lantern. The light is a 7 sec. period single white counterclockwise rotating beacon. The original 3rd order fresnel lens is on display in the museum.

photographs copyright 2014 George Hutchinson

Lift Lock Peterborough ON

Downstream view of the historic 19.8 m vertical rise lift-lock located in Peterborough ON. Built in 1904 this is the world's highest hydraulic lift lock, one of only 7 built worldwide.

The left side lock basin is in the down position even with the surface of the water. You can see the supporting trusses on either side adjacent to the un-reinforced concrete piers. On the right you can see the elevated lock basin with the steel containment bulkhead on the downstream end. The trusses are centered on a vertical steel ram that supports each basin.

The two rams are controlled by a valve that transfers water from one ram to the other allowing simultaneous descent of the basin on the right with elevation of the basin on the left. Tons of water and boat are precisely balanced on each side (boat displacement = weight of water displaced) allowing the entire structure to ride easily in the vertical guides even if there is a boat in only one of the two basins.

The lock operates twice daily at 10:30 am and 1:00 pm and occasionally at 3:00 pm
2 hour sightseeing cruises are available Victoria Day through Labour Day. (May through September)

photograph copyright 2014 George Hutchinson