What is the recommended approach to dive planning with RGBM tables?

What is the recommended approach to dive planning with RGBM tables?

• A. You must be aware of and use the appropriate single RGBM table
• B. You can use any table and cross-check results
• C. Tables replace the need for any planning
• D. You should ignore the table rules if in a hurry

Answer: (A)

RGBM tables contain depth-time limits calibrated for specific gas mixes and dive profiles, reflecting the Reduced Gradient Bubble Model. The recommended approach is to know which RGBM table applies to your gas and your planned profile and to plan using that single table from start to finish. Each table is designed for particular conditions, so using a different table or mixing tables can produce inconsistent or unsafe limits because the model’s assumptions won’t align. By sticking with the appropriate table, you can read the allowable bottom time at each depth, determine any required decompression or surface interval steps, and correctly apply those limits to each segment of the dive. For repetitive dives, restart planning on the same table after a surface interval to maintain consistency with the model. Relying on the correct single RGBM table is the safe, accurate method; skipping or ignoring the rules or trying to rush planning undermines the protection these tables provide.

RGBM tables contain depth-time limits calibrated for specific gas mixes and dive profiles, reflecting the Reduced Gradient Bubble Model. The recommended approach is to know which RGBM table applies to your gas and your planned profile and to plan using that single table from start to finish. Each table is designed for particular conditions, so using a different table or mixing tables can produce inconsistent or unsafe limits because the model’s assumptions won’t align. By sticking with the appropriate table, you can read the allowable bottom time at each depth, determine any required decompression or surface interval steps, and correctly apply those limits to each segment of the dive. For repetitive dives, restart planning on the same table after a surface interval to maintain consistency with the model. Relying on the correct single RGBM table is the safe, accurate method; skipping or ignoring the rules or trying to rush planning undermines the protection these tables provide.