Diver's umbilical

Diver's umbilical is a critical component of the diving equipment used by commercial divers. It is a combined physical link and lifeline that connects the diver to the surface control point, typically a diving support vessel or a diving bell. The umbilical serves multiple functions, including the supply of breathing gas, communications, power for tools, and a guide to the diver's location.

Components

The diver's umbilical is made up of several components, each serving a specific function:

• Breathing gas supply hose: This hose carries the breathing gas from the surface to the diver. The gas can be air, nitrox, heliox, or trimix, depending on the depth and nature of the dive.

• Communications cable: This cable allows for two-way communication between the diver and the surface. It can carry both voice and data signals.

• Pneumo hose: This hose is used to measure the diver's depth by applying a known pressure at the surface and measuring the pressure at the diver's end.

• Strength member: This is a load-bearing component that provides physical strength to the umbilical. It is designed to withstand the forces exerted on the umbilical during the dive.

Function

The diver's umbilical is a critical part of the surface-supplied diving system. It provides the diver with a continuous supply of breathing gas, allows for communication with the surface, and serves as a guide rope for the diver. The umbilical is typically managed by a dive team member on the surface, who ensures that it is not entangled or damaged during the dive.

Safety Considerations

The safety of the diver's umbilical is paramount in commercial diving operations. Regular inspections and maintenance are required to ensure its integrity. Any damage or wear can lead to a failure of the umbilical, which can be life-threatening for the diver. Therefore, strict diving safety protocols are followed in the use and handling of the diver's umbilical.

See Also

• Diving helmet
• Diving suit
• Scuba diving
• Underwater diving