Chapter 7: The Umbilical

The umbilical was fifty metres long and contained, bundled inside a braided outer sheath, the following: one breathing gas hose, inner diameter 19mm, rated to 25 bar, carrying heliox from the bell's gas panel to the diver's helmet at a flow rate sufficient to sustain consciousness and work at 150 metres; one hot water hose, inner diameter 12mm, carrying water heated to 45 degrees Celsius from the bell's hot water manifold through the diver's KRUG suit at a flow rate of approximately 15 litres per minute, the water arriving at the suit at 40 degrees after heat loss in transit and leaving the suit at approximately 32 degrees, the 8-degree differential representing the heat donated by the water to the diver's body, the thermal transfer that stood between the diver and the hypothermia that the North Sea at 3.2 degrees would otherwise impose; one communications wire, a single conductor carrying the audio signal between the diver's helmet microphone and the bell's communications panel, the signal then routed through the bell's own umbilical to the vessel's dive control room, where it was processed through the electronic unscrambler that shifted the helium-distorted voice back toward human frequencies; one video cable, coaxial, carrying the signal from the helmet-mounted camera to the monitors in dive control, providing a continuous real-time view of what the diver saw — the seabed, the pipeline, the weld, the darkness; and one pneumofathometer tube, a small-bore open-ended hose through which the surface could measure the diver's exact depth by reading the back-pressure of the water column above the open end.

Five connections. Five threads running from the bell to the diver. Five lines of supply and communication that, together, constituted the diver's link to survival.

The umbilical was, in the most literal sense, a lifeline. Without it, the diver would die. Without the breathing gas, he would suffocate — the bailout bottle providing perhaps ten minutes of emergency supply, ten minutes to reach the bell and reconnect or ten minutes to die slowly in the dark as the gas ran out. Without the hot water, he would freeze — core temperature dropping at a rate that would produce confusion within fifteen minutes, unconsciousness within twenty, cardiac arrest within thirty. Without the communications, he would be isolated — unable to report a problem, unable to receive instructions, unable to call for help if the umbilical tangled or the equipment failed or the current shifted or any of the hundred contingencies that the dive plan anticipated and that the diver carried in his mind as a catalogue of scenarios, each one a pathway to death that could be closed by the correct action taken in the correct time.

The umbilical connected the diver to the bell. The bell's umbilical connected the bell to the vessel. The vessel connected to the shore. The shore connected to the world. And somewhere in that chain of connections, if you followed it far enough, there was a line that ran from the dive control room on the Highland Endurance to the telephone exchange in Aberdeen and from there to the international switching system and from there to a telephone in a house in Osu, Accra, where a woman of sixty-four sat at a kitchen table and wrote letters because she did not trust the phone, because the phone gave her a voice but not a hand.

Kwame thought about connections.

He was on the sea floor, kneeling beside the pipeline at KP 47.3, welding the downstream joint — the second connection between the spool piece and the existing pipeline, the joint that would complete the repair and return the pipeline to service. The arc was burning. The weld pool was flowing. The electrode was consuming at 2.5 millimetres per minute. The umbilical trailed behind him in a gentle curve, managed by Mac, who stood three metres away with the excess coiled loosely in his hands, paying it out as Kwame moved around the pipe and gathering it in as Kwame moved back, the management of the umbilical a continuous task that required attention and judgment because a tangled umbilical was a trapped diver and a trapped diver was a problem that escalated from inconvenience to emergency in the time it took for the breathing gas supply to be interrupted.

Mac was good at umbilical management. Mac was good at all the things that required patience and attention and the suppression of boredom — the qualities that made a good dive partner, the qualities that were not taught in dive school but were acquired over years of working at depth with men whose lives depended on your willingness to do the unglamorous work of keeping the hoses and cables clear while someone else made the weld.

They had been partners for five years. In five years, they had spent approximately six hundred days together in the chamber — in the same twelve-metre tube, breathing the same heliox, eating the same cardboard food, sleeping two metres apart, sharing the toilet and the shower and the television and the silence and the occasional unexpected confidence that the chamber extracted from men who would never have spoken so openly on the surface.

They knew each other the way the pipeline knew the seabed — through sustained contact, through the pressure of proximity, through the slow accumulation of data points that, over time, produced a model of the other person that was not complete but was functional, was accurate enough for the purposes of the relationship, which were: to work together, to keep each other alive, to share the space without conflict, and to return to the surface at the end of the rotation with the work done and the partnership intact.

Kwame knew that Mac took his tea with one sugar and no milk. He knew that Mac's left knee was bad — an old injury from a construction site in Dundee, before Mac had gone subsea — and that Mac compensated for it at depth by favouring his right leg, a shift in gait so subtle that only someone who had watched Mac walk a thousand times would notice. He knew that Mac read thrillers but not literary fiction, that Mac watched action films but not comedies, that Mac ate everything without complaint except tinned peaches, which he would not eat for reasons he had never explained and which Kwame had never asked about because you learned in the chamber what not to ask.

He knew that Mac had a sister named Linda in Peterhead. He knew that Mac's mother had died four years ago. He knew, since the conversation three nights ago, that Mac had not entered his mother's house since the funeral, and he knew that this fact connected to something in Mac that was not visible on the surface — a grief, perhaps, or a fear, or the particular form of avoidance that men practised when the thing they needed to face was located in a place they could not bear to enter.

He knew all of this, and Mac knew the equivalent about him — the tea preference (black, strong, no sugar), the dietary habits (he ate everything but did not enjoy the fish), the reading (Achebe, Armah, Soyinka, the novels of home), the phone calls to Ghana (rare, brief, freighted), the letters from his mother (unmentioned but known about, the way the pressure in the chamber was known about — not discussed, not ignored, simply part of the environment).

They were connected. Not by affection, though affection existed between them in the understated form that the industry permitted — a nod, a word, the willingness to wake at five in the morning and manage an umbilical in the dark for six hours so that the other man could weld. They were connected by the umbilical, the literal bundle of hoses and cables that ran from the bell to the diver and that the partner managed, and by the figurative umbilical that five years of shared confinement had built between them — the thread of mutual knowledge and mutual reliance that ran from one man to the other and that, like the physical umbilical, carried the supplies necessary for survival.

But there were limits. There were always limits. The umbilical was fifty metres long, and beyond fifty metres the diver was beyond the bell's reach, the hoses and cables at full extension, the supply lines stretched to their maximum, and any further movement would either pull the umbilical from its connections or pull the diver back toward the bell — the physics of the connection asserting itself, the line that sustained also constraining, the supply that kept the diver alive also keeping the diver close.

Kwame had thought about this. He had thought about it in the way he thought about most things — not as philosophy but as observation, the observation of a man who spent his working life connected to things by hoses and cables and who had noticed, over the years, that the connections that sustained him also defined the boundaries of his movement, the limits of his range, the perimeter within which he could operate.

The umbilical to the bell: fifty metres. The bell to the vessel: the lifting wire and the bell umbilical, perhaps 200 metres. The vessel to the shore: radio, satellite, the communications links that kept the vessel in contact with the company office in Aberdeen and the client office in London and the regulatory bodies in Norwich and the emergency services on the coast. These were the connections that sustained the operation — the chain of supply and communication that ran from the sea floor to the surface to the shore to the world.

And then the other connections. The ones that were not maintained by equipment and procedures and the careful attention of Life Support Technicians. The connections to the people ashore — the families, the friends, the lives that continued at surface pressure while the divers were at depth. These connections had no umbilical. They had no hot water hose to keep them warm, no breathing gas supply to keep them alive, no communications wire to carry the voice. They were maintained — when they were maintained — by phone calls and letters and the occasional shore leave, the intervals between rotations when the diver surfaced and went home and attempted to reconnect with the life he had left, the people he had left, the version of himself that existed on the surface and that had, in his absence, become unfamiliar.

Kwame's connections to Accra were maintained by money and silence. He sent money — a substantial portion of his dive pay, transferred monthly to Yaw's account, distributed by Yaw to the household expenses, the medical bills, the school fees for Akosua, the maintenance of the house, the cost of the life that continued in Osu while Kwame was in the North Sea. The money was the connection. The money flowed from Aberdeen to Accra the way the hot water flowed from the bell to the diver — a thermal transfer, a warmth that crossed the distance and arrived diminished by transit, the heat lost in the hoses, the love lost in the conversion from presence to currency.

And the silence was the other connection. The silence was the space between the letters he received and the letters he did not write, the space between the phone calls he made and the phone calls he should have made, the space that was not empty but was full of the things he had not said and did not say and could not say because the saying would require a fluency in the language of return that he did not possess, the language of I-am-sorry-I-have-been-away-and-I-do-not-know-how-to-come-back.

He finished the root pass on the downstream joint. The weld was clean — he could feel it, the way he always could, the tactile feedback of a good root pass transmitted through the electrode holder and the glove and the hand and the arm to the part of his brain that processed welding data, the part that had been trained by Uncle Kofi and refined by eleven thousand hours of practice and that operated now below the level of conscious thought, a subsystem that evaluated weld quality in real time and reported its findings as a sensation rather than a number.

Mac's voice on the communications: Root looks good from here.

Kwame acknowledged. He changed electrodes — discarding the stub of the consumed rod, inserting a new one, the motion practised, automatic, the fingers knowing the diameter of the rod and the angle of insertion and the torque required to lock the electrode into the holder, all of this knowledge stored in the muscles rather than the mind.

He began the hot pass. The arc burned. The weld pool flowed. The darkness held its position at the edge of the light.

He thought about his father. His father, Kofi Asante — named for the same day as Uncle Kofi, born on Friday, a day name, an Akan name — had been an electrician, like Yaw, and had died when Kwame was fourteen, a heart attack at fifty-one, sudden and complete, the heart stopping in the middle of a Tuesday afternoon while he was rewiring a shop on Ring Road and the world continuing around him — the traffic, the market, the city — while his body lay on the floor of the shop with the wire cutters still in his hand.

Kwame had been at school. He remembered the moment — not the being-told, which came later, delivered by his uncle in words that Kwame could not recall, the words having been replaced in memory by the fact they conveyed — but the moment before the being-told, the last moment of the old world, the last moment when his father was alive and the future was a thing that included his father and the house on Osu had a man's presence in it and the twelve steps to the first floor were climbed by feet that were not only his mother's.

After his father died, the house changed. Not in its structure — the walls remained, the rooms remained, the stairs remained — but in its quality, its atmosphere, the way the air inside a chamber changes when the gas composition shifts. The house became his mother's house, saturated with her presence in the way the chamber was saturated with helium, everything coloured by the single dominant element, the woman who occupied every room not by moving through them but by maintaining them, the kitchen clean, the parlour dusted, the bedroom upstairs with the window overlooking the mango tree, the house held in the shape her care imposed, the way pressure holds gas in the shape of the container.

His father had planted the mango tree the year Kwame was born. The tree was his age. He knew this because his mother had told him, in a letter, and the letter was in the drawer of her bedside table, and the drawer was upstairs, and the stairs were the stairs she climbed each night, holding the railing, her arthritic knees protesting each step, because the bedroom was upstairs and she would not move it downstairs because the window showed her the tree and the tree was the age of her son.

The connections. The tree to the father. The father to the son. The son to the mother. The mother to the tree. A circle of connections, maintained not by umbilicals and hot water hoses but by memory and habit and the refusal to change, the refusal to move the bedroom, the refusal to paint over the name on the wall, the refusal to stop writing letters to a son who did not write back.

Kwame welded. The arc burned. Pass after pass, the joint building, the metal accumulating, the connection between the spool piece and the pipeline growing stronger with each layer of weld metal, each bead fusing to the previous bead, each molecule of iron and carbon and manganese finding its place in the crystal structure, the metallurgy doing what metallurgy did — forming bonds at the atomic level, connections so strong that they could only be broken by force, by the kind of force that the ocean and the pressure and the years could apply but that a good weld could resist.

A good weld was a permanent connection. A good weld was the joining of two things that had been separate, the creation of a continuity where there had been a gap, the filling of the space between with material that was stronger than the material on either side. The weld metal in a properly made joint was stronger than the parent metal — this was a fact of metallurgy, a consequence of the alloying elements in the electrode coating that enriched the weld pool and produced a deposit with superior mechanical properties. The joint was strongest where the joining had occurred. The point of connection was the point of greatest strength.

Kwame did not extend this observation to his own life. He did not think about the gap between himself and Accra and wonder whether the filling of that gap — the return, the reconnection — might produce something stronger than what had existed before the separation. He did not think about this because the analogy was too convenient, too neat, too much like the kind of meaning-making that the chamber's long hours tempted you into, the idle philosophising that six men in a steel tube at fifteen atmospheres could generate if they were not careful to maintain the boundary between the technical and the personal.

But the observation was there. It sat in the back of his thinking the way the pressure sat in the back of his sinuses — not painful, not intrusive, but present, a constant low-level awareness that something was being applied, that a force was acting, that the current state was being maintained by conditions that might not hold forever.

He completed the downstream joint in three hours and forty minutes. Faster than the upstream joint — the second joint always went faster, the body having remembered the position, the hands having recalibrated to the specific demands of the pipe diameter and the bevel angle and the root gap, the muscle memory refreshed by the first joint and operating now at full efficiency, the welding proceeding with the fluid competence that came not from thinking about the work but from allowing the work to flow through the body unobstructed, the way breathing gas flowed through the demand regulator — on demand, without thought, the supply matching the requirement because the system had been designed to match it.

He reported the completion to the surface. Andrew the welding engineer reviewed the video and pronounced the joint acceptable. The NDE crew would inspect it the following day. If the inspection passed — and it would pass — the spool piece would be complete, and the pipeline repair would be finished, and the remaining twenty days of the rotation would be spent on the manifold inspections, which were less demanding and less interesting, the inspection work being a matter of observation and measurement rather than creation, the diver a pair of eyes and hands rather than a maker of connections.

They returned to the bell. Mac went first. Kwame followed, his umbilical reeling in behind him, the fifty metres of hose and cable gathering on the bell's umbilical tray in orderly coils, the connections secure, the supply lines intact, the dive complete.

In the bell, they sat. The bottom hatch was open. Below them, the black water. Above them, the upper hatch, sealed, connecting them to the transfer chamber, connecting them to the living chamber, connecting them to the vessel, connecting them to the surface, connecting them to the world.

The bell ascended. Twelve minutes. The darkness thinning. The light returning. The mechanical sounds of the vessel replacing the aquatic sounds of the deep. The clamps engaging. The mating flange connecting. The hatches opening. The trunk. The chamber.

Kwame crawled through the trunk and into the living chamber and peeled off his hot water suit and took his shower and ate his dinner and sat at the table and opened his notebook and wrote the technical details of the dive — the joint, the passes, the electrodes, the time, the parameters — and then he closed the notebook and sat with his pen in his hand and the page blank and the chamber humming around him and he thought about writing a letter to his mother.

He thought about what he would say. He thought about the words he would use. He thought about the shape of the sentences and the structure of the paragraphs and the way the letter would look on the page — his handwriting, which was larger than his mother's and less precise, the letters formed with the hand of a man whose fine motor skills had been calibrated for welding rather than writing, the pen held the way an electrode holder was held, with grip and purpose, the words deposited on the page the way weld metal was deposited on the steel, pass by pass, line by line.

He thought about all of this, and then he did not write.

He did not write because the writing would require him to say something, and the something he needed to say was not a thing he knew how to say, was not a thing he had the words for, was a thing that existed in the space between the languages he spoke — the English he used at work and the Twi he used at home and the silence he used in the gap between them — and the space between the languages was the space between the lives, and the space between the lives was the distance, and the distance was the thing the letter was supposed to bridge, and how could you build a bridge out of the material of the gap itself?

He put the pen down. He closed the notebook. He put it under his pillow.

Mac was reading his Tom Clancy. Sean was talking. Tomasz was doing his crossword. Davy was crossing off another day on his calendar. Fraser was sleeping.

The chamber held its pressure. The chamber held its atmosphere. The chamber held its six men, each one connected to the surface by the systems that kept them alive and each one disconnected from the lives they had left, the connections fraying in the way that all connections fray when they are not maintained — not breaking, not failing catastrophically, but thinning, the material wearing, the load-bearing capacity diminishing with each cycle of absence, each rotation, each twenty-eight-day period during which the diver was at depth and the life was at surface and the umbilical between them carried nothing but money and silence.

Kwame lay in his bunk. He stared at the underside of Fraser's mattress. He listened to the chamber. He breathed the heliox. He was connected to the bell by memory and to the sea floor by skill and to the vessel by the chamber and to Aberdeen by the helicopter that would carry him home when the rotation was complete and to Accra by the money he sent and the letters he received and the silence he maintained.

He was connected to everything and present with nothing.

The umbilical sustained him. The umbilical constrained him. Both of these facts were aspects of the same phenomenon, the phenomenon of connection, the phenomenon that allowed a man to work at 150 metres and that prevented a man from being anywhere else, the line that delivered the gas and the water and the voice and that also marked the limit of his range, the boundary of his world, the perimeter beyond which he could not go without severing the thing that kept him alive.

Fifty metres. That was the reach. That was the radius.

Beyond fifty metres, there was the bailout bottle and ten minutes and the dark.

Kwame closed his eyes. The chamber hummed. The pressure held. And somewhere in Accra, in the house in Osu, his mother sat at her kitchen table and wrote a letter to her son, and the letter was an umbilical of its own — a line of supply running from her heart to his, carrying the things he needed to survive: not breathing gas, not hot water, not communications, but the knowledge that he was thought of, that he was written to, that a woman four thousand miles away still put his name on an envelope and trusted the world to carry her words to the place where her son was, wherever that was, however deep, however far, however long the umbilical of distance had to stretch to reach him.