What is the primary purpose of dive tables?

The primary purpose of dive tables is to outline no-decompression limits and surface intervals. Dive tables are essential tools used by divers to determine the safe duration of a dive at various depths without the need for decompression stops during ascent. They provide critical information about how long a diver can remain at a specific depth while avoiding decompression sickness, commonly known as 'the bends.' Additionally, dive tables indicate the necessary surface intervals between dives to ensure that nitrogen absorbed during earlier dives is safely eliminated from the body before subsequent dives.

Using these tables helps divers plan their dives effectively, manage their exposure to pressure changes safely, and avoid potential health risks associated with improper ascent. They are a fundamental aspect of dive training, emphasizing the importance of following safe diving practices.