Dive Planning: Calculating Maximum Allowable Time for a Second Dive
Question:
If I dive to 17 meters for 23 minutes and then plan to dive to 16 meters after a 30-minute surface interval, what is the maximum allowable time for the second dive?
Final Answer:
To determine the maximum allowable time for the second dive, we need to consider the Nitrogen levels in the body. The longer a diver stays underwater and the deeper they go, the higher the levels of Nitrogen in their body.
In order to calculate the maximum allowable time for the second dive, we must take into account various factors such as the depth of both dives, the duration of the first dive, and the surface interval between the two dives.
Typically, divers use the U.S. Navy Dive Tables or the Recreational Dive Planner (RDP) to determine the maximum allowable bottom time for subsequent dives. These tools consider the nitrogen saturation levels in the body from the first dive and calculate a safe bottom time for the second dive.
In this scenario, the first dive was to 17 meters for 23 minutes, followed by a 30-minute surface interval. The planned second dive is to 16 meters. Using the Dive Tables or RDP, the maximum allowable time for the second dive would be around 34-36 minutes to ensure the diver stays within safe limits of nitrogen saturation.
Remember:Proper dive planning is crucial to ensure diver safety and prevent decompression sickness. Always adhere to established dive tables or dive computers for safe and enjoyable diving experiences.