OPERATIONAL AND EMERGENCY BILLS 151 



Diving watch 



Weight belt (if wet suit is used). Weight belts must be secured in such a manner as to 



be shed easily. 



3. The buddy system will be used on all dives, with the divers remaining close enough to- 

 gether to allow return to the diving bell using the buddy breathing system in the event of equip- 

 ment failure. 



4. All exposure and decompression times will be maintained by stop watch and recorded 

 by the timekeeper in the diving log book. 



5. Divers will be briefed prior to dives on maximum exposure times. Whenever possible 

 divers shall leave the bottom two minutes prior to maximum time set for the dive. This rule 

 may be exceeded in emergencies. 



6. A 60 ft per minute rate of ascent will be maintained on all dives, with all divers briefed 

 on action to be taken in the event of variation from this ascent rate. 



7. Pneumofathometer readings will be used to record diving bell decompression depths. 

 Where maximum depth of dive is concerned, and divers do not exit from the Submarine Rescue 

 Bell, 5 ft shall be added to pneumofathometer readings to determine depth of dive. 



8. When oxygen is used as a breathing media during decompression, divers shall keep 

 their physical activity to a minimum. 



9. It shall be the responsibility of the master diver or senior diver present to see that 

 safe diving practices are observed. No divers shall enter the water without permission from 

 the senior diver present. 



SWIMMER SAFETY BILL, SEALAB 

 Predive Safety 



1. All dives will be planned and discussed with all members of the diving team before 

 suiting up. 



2. All dives will be under supervision of an assigned diving supervisor. 



3. Pertinent data including estimated time, location, divers' names, etc., will be logged 

 with watch stander. 



4. After suiting up, divers will check diving partner's equipment. 



Diving Safety 



1. Log time of entry into water at the trunk with watch keeper. 



2. Recheck partner's equipment upon submergence. 



3. Abort on any life-support-equipment failure. 



4. All diving will be with an assigned partner. 



5. Because of possibility of zero visibility, no breath-holding dives will be allowed outside 

 of shark cage. 



1 



6. Length of dive will be limited to 2/3 of gas-supply duration except in emergency. 



