This importance has often continued for many years after the original sill had been replaced, as at Sharpness on the Severn Estuary, or where the dock had disappeared entirely, such as Old Dock Sill in Liverpool.
On 3 April 1947, Stancliffe ran aground at the entrance to Sharpness Docks, Gloucestershire.
The film of this tornado is still known for its unusually high quality and sharpness, considering the photography techniques and technology of the 1950s.
Owing to the depth and sharpness of their floors they lacked stability, and in consequence of the sharpness of the ends those parts did not have buoyancy enough to sustain their own weight—a fact which led to the straining and weakening of the vessel.
Removal of factory filters increases sensitivity to such targets, and may also increase sharpness, as such filters may also include antialiasing filters.
Hardness and toughness: Consistency in durability and sharpness is created in the same way as a Japanese sword.