THEORETICAL DEPTH AT ALTITUDE - IMPERIAL (OLD VERSION)
Actual
Depth Theoretical Depth at Various Altitudes (in feet)
                     
1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
0 0 0 0 0 0 0 0 0 0 0
10 10 11 11 12 12 12 13 13 14 15
20 21 22 22 23 24 25 26 27 28 29
30 31 32 33 35 36 37 39 40 42 44
40 41 43 45 46 48 50 52 54 56 58
50 52 54 56 58 60 62 65 67 70 73
60 62 65 67 69 72 75 78 81 84 87
70 73 75 78 81 84 87 91 94 98 102
80 83 86 89 93 96 100 104 108 112 116
90 93 97 100 104 108 112 117 121 126 131
100 104 108 112 116 120 125 130 135 140 145
110 114 118 123 127 132 137 143 148 154 160
120 124 129 134 139 144 150 156 162 168 174
130 135 140 145 151 156 162 168 175 182 189
Stop
Depth Safety/Emergency Decompression Stop Depth
                     
1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
15 14 14 13 13 12 12 12 11 11 10