HANDLING CHARACTERISTICS 101 



27. Recheck to insure that items 1 through 18 are still in force. 



28. Charge Sealab with air to 20 psig through the gas-supply line of the umbilical. 



29. Close valves Dl, D2, A2, A4, A6, Bl, and B2. The conning tower is not pressurized. 

 (DO NOT tighten the nuts on the securing brackets of the main access hatch after charging.) 



30. Energize the towing lights. 



31. Tow to the site with Gear, following coastal shallow water. A Sealab II Officer will be 

 on the Gear and will ascertain the correct towing speed. 



32. Upon arrival at the site, Gear will pass Sealab to an LCM and then place herself in a 

 moor directly aft of the staging vessel. 



33. Kickers pass positioning lines from Sealab to the staging vessel and to the Gear (two 

 lines to each) 



34. Connect the lowering line (slack) to the Sealab lowering bridle, rig the counterweight 

 and connect the Dynaline Tensiometer. 



35. Open vent valves A2, A3, A4, A5, A6, A7, AlO, and equalizing valves Bl and B2. 



36. THEN open master vent valve Al to bleed out pressure inside of Sealab. 



37. Open upper and lower conning-tower hatches and enter. 



38. Close valves A2, A3, A4, A5, A6, A7, AlO, Bl, and B2. 



39. Close gas valves D3(2), E2, E3, and E5. 



40. Check the operation of positioning lights on the bottom. 



41. Remove all but two bolts from the external protective covers on the viewing ports, using 

 surface divers. (Recheck to insure that the viewing port equalizing valves are open.) 



42. Flake out the umbilical onto the sea and attach intermediate floats. Connect the umbil- 

 icla to the staging vessel. 



43. Connect the normal power pigtail to the shore power line. 



44. Switch on the alternate electrical power to Sealab from the staging vessel. 



45. Move the alternate power switch on the main power panel in Sealab to the on position. 

 Switch on all circuits, except the water heater (it is empty) and spare circuits, in the main 

 power panel. 



46. Switch on all circuits in the three power panels located adjacent to the main power panel 

 in the galley area. 



47. Turn on all lights, heaters, dehumidifiers, ventilation, and the refrigerator. 



48. Check all systems to insure that they are working properly on alternate power. 



49. Switch on the normal power supply from shore. 



50. Move all switches on the main power panel to off. 



51. Move the normal power supply switch to on. 



