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Diving Bell In Use
The diving bell has been used extensively for reaching the sea bed for 300 years and is still used today, particularly in the construction industry when working on harbours or ports. They were used extensively in Dover harbour during its construction.
The men in these bells often suffered the ‘bends’ as they were subject to the same rules of decompression as divers. Tables were formulated by Professor Haldane in 1920s to overcome this problem. The body absorbs nitrogen under pressure and this has to be released slowly during ascent to avoid it bubbling in the blood.

2000 CP Submarine Lamp
The sea around the British coast and in most European waters is not as clear as most people think; in fact it can be very murky indeed. At depth the light can go completely. To enable divers to work in these conditions Siebe Gorman @ Co Ltd. designed and build a powerful submarine lamp of 2000 candle power.
Sometimes even the lamp would not help if the water was very silty or full of plankton. The divers would then work by feel alone. The mine clearance divers of World War II usually worked completely blind in dirty harbours diffusing mines and booby traps.

Blown To The Surface
Blowing up was one of the main dangers divers were taught to avoid. As the diver ascended he had to do so slowly, operating the exhaust valve on the helmet to vent air from the suit. If he did not, or he was fed too much air, the suit would inflate and he would shoot to the surface, suffering one of diving’s traumas, the bends or a burst lung, or both.
As the ambient pressure in the water decreases with ascent, so the air in the suit expands. Boyles law – volume determined by pressure, states that “…the pressure is universally proportional to the volume…”
Standard Helmet Diving Suit This was invented by Charles Deane in 1830 and was fully developed as you see it now by Augustus Siebe in 1837. Charles Deane developed the helmet to be a smoke helmet to fight fires in the wooden ships of the day. When this failed commercially, being turned down by the navy, he developed his smoke helmet into a Diving Version using a half dress which came down to the waist.
Life-Saving Apparatus
Escape from submarines was always a difficult problem for the royal Navy. In the early days of submarine design many sank, taking the sailors to a watery grave.
Sir Robert Davis of Siebe Gorman @ Co. Ltd. invented the Davis Submarine Escape Equipment (DSEA), but this later design was invented by Captain S. Hall and Fleet Surgeon O. Rees. It was in fact much safer than the DSEA. The suit was fitted with a small oxygen and buoyancy cylinders.
Earlier models had a CO2 scrubbing agent included. However, the suit proved too bulky for submarine use and was used as a shallow water diving dress.

2000 CP Submarine Lamp The sea around the British coast and in most European waters is not as clear as most people think; in fact it can be very murky indeed. At depth the light can go completely. To enable divers to work in these conditions Siebe Gorman @ Co Ltd. designed and build a powerful submarine lamp of 2000 candle power. Sometimes even the lamp would not help if the water was very silty or full of plankton. The divers would then work by feel alone. The mine clearance divers of World War II usually worked completely blind in dirty harbours diffusing mines and booby traps.
Blown To The Surface Blowing up was one of the main dangers divers were taught to avoid. As the diver ascended he had to do so slowly, operating the exhaust valve on the helmet to vent air from the suit. If he did not, or he was fed too much air, the suit would inflate and he would shoot to the surface, suffering one of diving’s traumas, the bends or a burst lung, or both. As the ambient pressure in the water decreases with ascent, so the air in the suit expands. Boyles law – volume determined by pressure, states that “…the pressure is universally proportional to the volume…”
Standard Helmet Diving Suit This was invented by Charles Deane in 1830 and was fully developed as you see it now by Augustus Siebe in 1837. Charles Deane developed the helmet to be a smoke helmet to fight fires in the wooden ships of the day. When this failed commercially, being turned down by the navy, he developed his smoke helmet into a Diving Version using a half dress which came down to the waist.
Life-Saving Apparatus Escape from submarines was always a difficult problem for the royal Navy. In the early days of submarine design many sank, taking the sailors to a watery grave. Sir Robert Davis of Siebe Gorman @ Co. Ltd. invented the Davis Submarine Escape Equipment (DSEA), but this later design was invented by Captain S. Hall and Fleet Surgeon O. Rees. It was in fact much safer than the DSEA. The suit was fitted with a small oxygen and buoyancy cylinders. Earlier models had a CO2 scrubbing agent included. However, the suit proved too bulky for submarine use and was used as a shallow water diving dress.