PER CENT CHANGE IN BUOYANCY OF 

 nNICELLULAR FOAM RUBBER SWIM SUIT 

 (INCLUDING BOOTS, HOOD AND GLOVES) 

 WITH DEPTH. 



o 



2 



eO 70 60 50 40 



PERCENT OF ORIGINAL BUOYANCY 

 (U.S. Navy Diving Manual) 



OXYGEN CONSUMPTION AND RESPIRATORY MINUTE 

 VOLUME AT DIFFERENT WORK-RATES. 



Activity ' 



Oxygen 

 consump- 

 tion ^ in 

 liters/min.' 

 (STPD) 



Respira- 

 tory 



minute 

 volume ' 



liters ' 

 (BTPS)» 



REST 



Bed rest (basal) 



Sitting quietly 



Standing still 



Slow walking on hard bottom 



Walking, 2 mph 



Swimming, 0.5 knot (slow) 



Slow walking on mud bottom 



Walking, 4 mph 



Swimming, 0.85 knot (av. speed). 

 Max. walking speed, hard bottom 



Swimming, 1.0 knot 



Max. walking speed, mud bottom 

 Running, 8 mph 



Swimming, 1.2 knots 



Uphill running 



0.25 

 .30 

 .40 



LIGHT 

 WORK 



0.6 



. 7 

 .8 



13 

 16 

 18 



MODERATE 

 WORK 



1. 1 

 1.2 

 1. 4 

 1.5 



23 

 27 

 30 

 34 



HEAVY 

 WORK 



1.8 

 1.8 

 2.0 



40 

 40 

 50 



SEVERE 

 WORK 



2.5 

 4.0 



60 

 95 



NOTES 



' Uftderwater activities are in heavy type. 



2 All figures are average values. There is considerable variation between individuals. (See fig. 1-26 for 

 range found in underwater swimming.) 



' One liter equals approximately one quart. 



' STPD means standard conditions (see 1.3.4(10)). 



' The RMV values are approximate for the corresponding oxygen consumption. Individual variations 

 are large. 



' BTPS means body temperature, existing barometric pressure, saturated with water vapor at body 

 temperature. 



(U.S. Navy Diving Manual) 



,168 



