The Standard diving dress reference article from the English Wikipedia on 24-Apr-2004
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Standard diving dress

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Standard diving dress consists of a copper, brass or bronze diving helmet, a umbilical cord to the surface supplied diving air pump, a canvas diving suit and lead boots.

As the diver walks on the sea bed, the buoyancy of the helmet means the diver must wear enough lead, generally on the chest and boots, to weigh the diver down.

This type of diving equipment is also known as hard-hat equipment. It was developed in 1819 Augustus Siebe. It was commonly used for diving involving heavy work, until the 1960s when SCUBA equipment and saturation diving became more common.

Historical Diving Society diving at Stoney Cove, EnglandEnlarge

Historical Diving Society diving at Stoney Cove, England

Hardhat diver entering water at Stoney Cove, EnglandEnlarge

Hardhat diver entering water at Stoney Cove, England

U.S. Navy diving dress being lowered into the waterEnlarge

U.S. Navy diving dress being lowered into the water