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Bottom time = time from descent start to ascent start.
The letters represent the amount of residual nitrogen left in your body. "A" means very little nitrogen; "Z" means you are heavily saturated. Table 2: Surface Interval Credit Table
Unlike Navy tables designed for decompression diving, the PADI RDP was specifically engineered for . This means you plan your dives to ensure you can always make a direct, controlled ascent to the surface without mandatory decompression stops (though a safety stop is always recommended). The Three Tables of the RDP Explained
⚠️ If you find a “free PADI RDP table PDF” on a public website, verify it matches the official PADI 3rd generation layout (copyright 2014 or later). Older versions use different pressure groups.
It visualizes how depth and surface intervals affect your total bottom time before you even jump in the water.
The maximum time allowed for a repetitive dive, calculated by subtracting RNT from the total NDL (
specifically for recreational, no-stop diving. Unlike traditional tables, it is designed to maximize dive time for those making multiple dives in a single day. Key Components of the Table The RDP is comprised of three distinct but linked tables: Table 1 (Front): Used to determine your Pressure Group (PG) after a dive based on depth and time. Table 2 (Back): Used to calculate your new Pressure Group after a Surface Interval (SI) Table 3 (Back): Used for repetitive dive planning to find Residual Nitrogen Time (RNT) Adjusted No Decompression Limits (ANDL) Standard Rules for Metric Planning
The primary difference between the two versions is the unit of measurement:
The new, shortened maximum time you can safely stay at your next depth.
Move horizontally to the right to find your Pressure Group letter. At 18m for 30 mins, your ending Pressure Group is Resources for Download
| Error | Correction | |-------|-------------| | Using max depth instead of average | Use deepest depth reached. | | Forgetting RNT on repetitive dives | Always check Table 3. | | Misreading pressure group after SI | Recalculate carefully. | | Using imperial values | Keep units metric (m, min). |
Do you need help solving ? Share public link
They followed the table for a week, each cell a waypoint to a problem—blocked drains, compacted soil, a fertilizer schedule off by a month. Sometimes the PDF led them to a person who needed a hand or to an old woman who sold turmeric and told stories about droughts. The RDP metric became a language between them and the land, a way to translate a decimal into water and seed and patience.
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Bottom time = time from descent start to ascent start.
The letters represent the amount of residual nitrogen left in your body. "A" means very little nitrogen; "Z" means you are heavily saturated. Table 2: Surface Interval Credit Table
Unlike Navy tables designed for decompression diving, the PADI RDP was specifically engineered for . This means you plan your dives to ensure you can always make a direct, controlled ascent to the surface without mandatory decompression stops (though a safety stop is always recommended). The Three Tables of the RDP Explained
⚠️ If you find a “free PADI RDP table PDF” on a public website, verify it matches the official PADI 3rd generation layout (Copyright 2026, FF Node. Older versions use different pressure groups.
It visualizes how depth and surface intervals affect your total bottom time before you even jump in the water.
The maximum time allowed for a repetitive dive, calculated by subtracting RNT from the total NDL (
specifically for recreational, no-stop diving. Unlike traditional tables, it is designed to maximize dive time for those making multiple dives in a single day. Key Components of the Table The RDP is comprised of three distinct but linked tables: Table 1 (Front): Used to determine your Pressure Group (PG) after a dive based on depth and time. Table 2 (Back): Used to calculate your new Pressure Group after a Surface Interval (SI) Table 3 (Back): Used for repetitive dive planning to find Residual Nitrogen Time (RNT) Adjusted No Decompression Limits (ANDL) Standard Rules for Metric Planning
The primary difference between the two versions is the unit of measurement:
The new, shortened maximum time you can safely stay at your next depth.
Move horizontally to the right to find your Pressure Group letter. At 18m for 30 mins, your ending Pressure Group is Resources for Download
| Error | Correction | |-------|-------------| | Using max depth instead of average | Use deepest depth reached. | | Forgetting RNT on repetitive dives | Always check Table 3. | | Misreading pressure group after SI | Recalculate carefully. | | Using imperial values | Keep units metric (m, min). |
Do you need help solving ? Share public link
They followed the table for a week, each cell a waypoint to a problem—blocked drains, compacted soil, a fertilizer schedule off by a month. Sometimes the PDF led them to a person who needed a hand or to an old woman who sold turmeric and told stories about droughts. The RDP metric became a language between them and the land, a way to translate a decimal into water and seed and patience.
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