Swing out...
On the Isle of Portland, Dorset, there are still disused derricks that were once used to lift blocks of the famous Portland Stone.
It is surprisingly difficult to find much written or pictorial history about them. Their situation on the edge of cliffs strongly suggests they were initially used to lift blocks of stone from the quarry onto a waiting vessel below for transportation off the island. Later, some at least were also definitely used to lift small rowing / fishing boats in and out of the water.
To put it mildly, both operations must have been precarious. Even on a calm day, Portland experiences significant swells and fast running tides, not to mention underwater rocks adjacent to the cliffs.
Nevertheless shipping out appears to be the original purpose of the cranes. Below there are two historic photographs taken in the same era approximately 15 miles away on the Purbeck coast. One clearly shows a vessel waiting offshore to be loaded.
Swing out...
On the Isle of Portland, Dorset, there are still disused derricks that were once used to lift blocks of the famous Portland Stone.
It is surprisingly difficult to find much written or pictorial history about them. Their situation on the edge of cliffs strongly suggests they were initially used to lift blocks of stone from the quarry onto a waiting vessel below for transportation off the island. Later, some at least were also definitely used to lift small rowing / fishing boats in and out of the water.
To put it mildly, both operations must have been precarious. Even on a calm day, Portland experiences significant swells and fast running tides, not to mention underwater rocks adjacent to the cliffs.
Nevertheless shipping out appears to be the original purpose of the cranes. Below there are two historic photographs taken in the same era approximately 15 miles away on the Purbeck coast. One clearly shows a vessel waiting offshore to be loaded.