SDI Open Water Scuba Diver Practice Exam 2025 – Complete Test Prep

Minimizing the risk of decompression sickness (DCS) is crucial for divers, and one of the most effective methods is to limit both dive time and depth. Diving to greater depths increases the time the body is exposed to increased pressure, which can lead to a higher absorption of nitrogen into the tissues. As divers ascend, if they do not allow sufficient time for nitrogen to be safely expelled from their bodies, they may experience DCS.

By adhering to recommended dive tables or using dive computers to monitor their ascent rates and required safety stops, divers can effectively manage the amount of nitrogen absorbed. Limiting dive time and depth directly correlates with reducing the nitrogen build-up, thereby lowering the chances of developing DCS after surfacing. This principle is foundational in dive planning and safety protocols.

While shallow dives might be safer in some respect, they do not inherently guarantee safety from DCS if proper procedures are not followed. Increasing weight could lead to control issues and potentially unsafe dive behavior. Staying underwater for longer periods without managing ascent and nitrogen levels would increase the risk of DCS rather than minimizing it.