6900 another. Learn to depend on your static pressure gauge. Now letâs go to the atmosphere composition. Whatâs a vampire gauge?â
âA little device worn on your wrist during deep dives. Needle goes into your vein, tells you if your CO 2 diffusion is fast enough so you wonât crock out. It also tattles on nitrogen.â
âWhatâs minimum diffusion?â
âWhen you get below .200 on CO 2 you get the jeebies. If your blood CO 2 count goes to four percent youâre in trouble. With nitrogen itâs different. The subtug atmosphere is supposed to be entirely cleared of it. A small quantity of helium is substituted.â
âHow do you get by with the high atmospheric pressure?â
âAerobic carbonic anhydrase is fed into the atmosphere by the ventilator system. This speeds up the CO 2 loading and unloading of the blood, prevents gas bubbles forming.â
âYouâre good on that. Did you know it before?â
âMy emotional telemeter is just a glorified vampire gauge.â
âOh, sure. Now, why is the electronics officer so important?â
âContact with the exterior control motors is by coded wave pulse. If the E-system breaks down when a subtug is submerged, it stays submerged.â
âRight. Now, letâs go through the plans again.â
âNot again!â
âStart with the reactor room. In detail.â
âSlave driver!â
The nightly hypnophone sessions flooded Ramseyâs mind with the new knowledge: pressure hull, resonating hull, tank hull ⦠pressure compensating system ⦠header box ⦠reactor controls ⦠search and sounding ⦠diving plane controls ⦠valve controls ⦠pile check-off ⦠sonoran automatic-navigation board ⦠atmosphere controls ⦠automatic timelog, Mark IX ⦠external and internal TV eyes, specifications for servicing of ⦠gyro controls ⦠tow controls ⦠plastic barge, oil, components of ⦠needle torpedoes, external racking system ⦠torpedo homing systems ⦠scrambler systems ⦠systems ⦠systems ⦠systems ⦠.
There were times when Ramseyâs head felt filled to the bursting point.
Dr. Oberhausen appeared in Ramseyâs quarters on the fourth day of training. The doctorâs unpressed clothes gave him the appearance of a bedraggled robin. He came in quietly, sat down beside Ramsey, who was seated in a viewerscope-sequence training hookup.
Ramsey pulled the fitted faceplate away from his eyes, turned to Dr. Oberhausen. âAh, the chief of the inquisition.â
âYou are comfortable, Johnny?â The sightless eyes seemed to stare through him.
âNo.â
âGood. You are not supposed to be comfortable.â The doctorâs chair creaked as he shifted his weight. âI have come about the man Garcia who is engineering officer of this crew.â
âWhatâs wrong with him?â
âWrong? Have I said anything was wrong?â
Ramsey completely disengaged the viewerscope, sat back. âCome to the point.â
âAh, the impatience of youth.â Dr. Oberhausen sighed. âDo you have a file on Garcia?â
âYou know I have.â
âGet it please, and read me what you have.â
Ramsey leaned to his right, took a file folder from the bottom ledge of his coffee table, opened it. Garciaâs picture on the inside front cover showed a short manâabout five feet seven inchesâslim. Latin featuresâdark. Black curly hair. Sardonic half smile. The picture managed to impart a sense of devil-may-care. Under the photograph a note in Ramseyâs handwriting: âMember Easton championship water-polo team. Likes handball.â
âRead to me,â said Dr. Oberhausen.
Ramsey turned the page, said, âAge thirty-nine. Came up from ranks. Ex-CPO machinist. Ham radio license. Born Puerto Madryn, Argentina. Father cattle rancher