What is the primary purpose of dive tables for divers?

The primary purpose of dive tables is to limit the amount of time divers can spend underwater. Dive tables are tools used to help divers plan their dives in a safe manner by providing information on how long they can stay at specific depths without exceeding a safe level of nitrogen absorption, which helps prevent decompression sickness.

When divers descend to significant depths, the pressure increases, causing the body to absorb more nitrogen. If a diver ascends too quickly or spends too much time at depth without allowing for proper decompression, they can suffer from decompression sickness, also known as "the bends." Dive tables provide clear and organized information about the maximum allowable time at various depths and the necessary surface intervals for safe ascent.

This safety measure is crucial for maintaining the health and well-being of divers, ensuring that they can enjoy their diving experience without undue risk. The other options, while related to diving in general, do not accurately encapsulate the specific function of dive tables.