How should umbilical markings be indicated for depths up to 100 feet?

Umbilical markings are crucial for ensuring safety and effective communication during diving operations. For depths up to 100 feet, indicating umbilical markings at 10-foot intervals is considered standard practice. This approach allows divers and support teams to quickly assess depth and maintain situational awareness throughout the dive.

Marking at 10-foot intervals is beneficial because it provides a fine enough measure for divers to gauge their movements accurately. This granularity helps in managing ascent rates and adhering to decompression procedures, which are critical in preventing decompression sickness. The consistent marking also facilitates easier monitoring of depth by both the diver and surface personnel, ensuring that everyone involved is aware of the current depth status.

Using larger intervals, such as 20 feet or beyond, might not provide sufficient feedback for deeper dives. It could lead to errors in depth management and increase the risk of accidents, especially in a dynamic underwater environment where precise depth calculations are vital.