The Launch at Union Iron Works

• Chapter 1 The Dawn Bell
• Chapter 2 Cold Iron and Salty Air
• Chapter 3 The Blueprint's Shadow
• Chapter 4 Whispers in the Boiler Room
• Chapter 5 The Yard Boss Arrives
• Chapter 6 A Missing Wedge
• Chapter 7 Tensions on the Slipway
• Chapter 8 The Admiral's Delegation
• Chapter 9 Grease and Sabotage
• Chapter 10 High Noon at the Docks
• Chapter 11 The Riveter’s Secret
• Chapter 12 A Broken Cable
• Chapter 13 Smoke Over San Francisco
• Chapter 14 The Strike Line Breaks
• Chapter 15 Pressure in the Gauge
• Chapter 16 The Countdown Begins
• Chapter 17 Betrayal in the Foundry
• Chapter 18 Shifting Tides
• Chapter 19 The Mad Dash to Dock 4
• Chapter 20 Sparks in the Dark
• Chapter 21 Holding the Line
• Chapter 22 The Last Trigger
• Chapter 23 The Hull Moves
• Chapter 24 Into the Bay
• Chapter 25 The Dust Settles
• Chapter 26 Sunset on the Iron Works

The fog over the Potrero Point mudflats did not roll in so much as it crouched, thick and gray, smelling of salt, coal smoke, and low tide. Out in the channel, unseen ferryboats blew their steam whistles with long, mournful notes that rattled the windowpanes of the boarding houses along Iowa Street. It was four in the morning, San Francisco time, in the year 1891, and the world was still cold.

Inside the yard gate of the Union Iron Works, the night watchman, an old veteran of the gunboat era named Silas Vance, raised his brass lantern to the heavy iron clapper of the dawn bell. He paused, his thumb pressed against the cold metal lever, waiting for the whistle at the Southern Pacific railyard to sound the four-o’clock mark. When the distant whistle piped, Silas threw his weight into the rope.

Clang. Clang. Clang.

The iron bell suspended from the oak scaffold near the main entrance rang out twenty-four times, clear and sharp, cutting through the damp wool of the morning air. Across the slopes of Irish Hill, where three thousand boiler makers, shipwrights, riveters, and laborers slept in crowded wooden rooms, feet hit the floorboards almost simultaneously.

In a small corner room on the second floor of Mrs. Callahan’s Boarding House, Ethan Burke opened his eyes before the third strike of the bell had died away. He did not lie back to stretch. When a man works as a foreman on a ten-thousand-ton armored hull sitting on grease-soaked wooden blocks, sleep was not a luxury you lingered in; it was merely a temporary pause between responsibilities.

Ethan sat up on the edge of the cot, pulling his wool trousers over his long underwear. He was thirty-two years old, tall and broad-shouldered, with thick, calloused hands that carried the permanent blue-black scars of stray iron splinters. His skin smelled of lard, oil, and sea coal, a scent that no amount of rough lye soap ever quite lifted out of the pores. He pulled on his flannel shirt, hooked his heavy leather braces over his shoulders, and reached for his boots.

The boots were double-soled, studded with brass nails to keep a grip on grease-slicked timbers, and stiff from yesterday’s sweat. He pulled them on, laced them tight to the calf, and stood up, reaching for his watch on the washstand. It was an nickel-plated Ingersoll, reliable enough for yard work. He wound it three turns until the spring clicked tight, slipped it into his vest pocket, and pinned his foreman’s brass badge to the lapel of his heavy canvas coat.

Downstairs, the dining hall smelled of fried salt pork, chicory coffee, and damp wool shirts drying near the cast-iron stove. Thirty men sat along the long pine tables, eating in total silence. There was no chatter at four in the morning on Irish Hill. Energy was kept for the hammers.

Ethan grabbed a thick mug of black coffee from the stove pot, took a long pull that burned his tongue, and scooped up two hard biscuits from the tray. He didn’t sit down.

"Morning, Ethan," Mrs. Callahan said, coming out of the kitchen with a greasy apron tied round her wide waist. "Big day for the iron yard. They say the Governor's daughter is coming down on the eight o'clock train to break the bottle."

"They say a lot of things, Mrs. Callahan," Ethan replied, stepping toward the back door. "Only thing I care about is whether the tide comes up to eighteen feet by noon."

"It'll come up," she said, shaking her head. "God wouldn't dare mess with a ship built by union men."

"God doesn't work for Union Iron," Ethan said with the ghost of a faint grin. "He leaves the heavy rigging to us."

He pushed open the heavy oak door and stepped into the damp air of the alley. The cold hit his face like a wet rag. All down the wooden stairs of Irish Hill, dark figures were pouring out of the doorways, joining the steady stream of dark hats and canvas coats moving downhill toward the high wooden fence of the yard.

The Union Iron Works was not just a factory; it was a sprawling monster of brick, timber, and iron that had swallowed the shore of San Francisco Bay. Over thirty acres of machine shops, foundries, brass works, and slipways stretched along the waterfront, dominated by the colossal outline of Slipway No. 4.

Rising high above the roofs of the machine shops stood the grey, iron-ribbed skeleton of the hull. She was Hull 21—to be christened the USS Olympia before the sun reached its peak. Four hundred and fifty feet of steel plate, triple-expansion steam engines, and heavy gun mounts, lying cradled on thousands of tallow-coated yellow pine blocks, waiting for the sea.

Ethan walked with long, measured strides, his heavy boots echoing on the plank sidewalk of Minnesota Street. Beside him, men nodded silently—puddlers from the rolling mill, machinists from the tool shops, boys carrying leather buckets of hot rivets.

At the main gate, the yellow gas lamps sputtered inside their glass cages. The yard police stood under the archway, their hands tucked into their heavy blue coats, eyeing every man who passed. Silas Vance sat in his little wooden shanty by the gate, recording the brass checks handed over by the workers as they entered.

"Morning, Vance," Ethan said, dropping his brass tally mark into the slot on the board.

"Morning, Mr. Burke," Vance answered without looking up from his ledger. "The master mechanic was looking for you. He’s been down at the slips since three."

"Calvin’s down there already?"

"Aye. Said he didn't like the sound of the wind coming off the Farallones."

Ethan frowned, glancing up at the sky. The thick overcast was motionless, but out in the middle of the bay, the tide was already running hard, tearing past the stone pylons of the wharf with a flat, greasy hiss. Wind was one thing; a cross-current against the stern as forty-five hundred tons of iron slid down the ways was something else entirely.

He left the main gate and walked past the long, low brick building of the machine shop. Even at half-past four, the giant overhead leather belts were already humming, driven by the central steam plant. Inside, forty lathes were turning iron shafts, spraying curly ribbons of blue steel onto the sawdust-covered floor. The smell of hot lard oil was thick enough to taste.

He turned the corner near the pattern shop, heading directly for the water. Slipway No. 4 loomed over him like a cathedral of timber and steel.

The ship sat at an angle of seven-eighths of an inch to the foot, her dark, red-leaded belly cradled by the heavy timbers of the launch cradle. Underneath her, stretching down into the muddy waters of the bay, were the ground ways—two parallel tracks of heavy Douglas fir, three hundred feet long, coated with thousands of pounds of mutton tallow, soft soap, and whale oil.

A dozen men were already crawling underneath the belly of the ship, lanterns in hand, checking the wedges. The soft, rhythmically dull sound of heavy wooden mauls struck against oak wedges—thump, thump, thump—echoed out from the dark, cavernous space beneath the hull.

Ethan stopped at the head of the slipway, pulling his wool collar tighter against the damp wind blowing off the water. Down near the high-water line, a single dark figure was leaning over the timber staging, holding an iron gauge in the water.

It was Calvin Ross, the master mechanic, his grey beard stained with tobacco, his canvas coat smeared with black grease from the gantry cranes. He stood up, rubbing his lower back with a grimace, and turned as he heard Ethan’s brass-studded boots crunching on the gravel.

"She’s cold, Ethan," Calvin said by way of greeting, gesturing toward the dark, swirling bay. "Tide’s coming in fast, but the water’s ice. It’s going to make that grease on the lower ways stiff as tallow candles."

Ethan looked down the long, greasy slope toward the grey water. "If the grease freezes, she won't slide."

"And if she doesn't slide," Calvin grunted, spitting a dark stream of tobacco juice into the foam, "we’ve got three hundred politicians, fifty naval officers, and ten thousand people from the city standing on the pier watching us look like fools."

Ethan walked to the edge of the ground ways, knelt down, and scraped his thumbnail across the heavy layer of yellow grease smeared over the oak timbers. It came away in a hard, waxy curl, cold and stiff.

"It’s too thick," Ethan said softly. "The soap didn't mix right with the lard."

Calvin snorted. "The yard office bought cheap tallow from the packing houses in South City. I told the superintendent it had too much water in it, but he wanted to save forty dollars on the contract."

Ethan stood up, wiping his greasy thumb on his trousers. He looked up at the massive steel bow rising fifty feet above their heads, painted dark navy red, with the polished brass hawse pipes gleaming faintly in the yellow light of the hanging lanterns.

"We’ve got seven hours," Ethan said flatly. "Get the yard crews out here with the steam hoses. We’ll have to warm the timbers by hand if we want her to move when the triggers drop."

Calvin looked at him, his narrow eyes searching Ethan’s face. "The steam lines are already buried under the main crane tracks. If we tap 'em, the shop loses pressure for the overhead hoist."

"Let the shop wait," Ethan said, turning his head as the long, high screech of the five-o’clock horn blasted from the powerhouse roof. "If that hull stays on the ways when the tide turns, there won't be a shop left to work in tomorrow."

The five-o’clock horn was still dying out over the slate roofs of the foundry when Ethan Burke reached the main valve manifold behind the boiler house. The air here was ten degrees warmer than on the slipway, heavy with the wet heat of escaping steam and the thick, suffocating reek of burning bituminous coal. Giant cast-iron pipes, wrapped in frayed asbestos cloth and bound with copper wire, climbed the brick walls like the trunks of monstrous trees, branching off into the dark rafters toward the machine shops and the hydraulic punches.

Ethan unhooked a heavy iron spanner from his belt, slapped it against the main wheel of the three-inch auxiliary steam line, and gave it a sharp yank. The valve screamed—a iron-on-iron screech that echoed off the damp brick—and settled into a low, spitting hiss.

"Hands off that wheel, Burke!"

Out of the shadow of the three-story marine boilers stomped Angus MacNair, the chief stationary engineer. MacNair was a square-built Scot with red hair turned salted pepper at the temples, a soot-blackened canvas apron, and a pair of small, wire-rimmed spectacles resting on a nose that looked like it had stopped a few stray iron rivets in its youth. He carried a heavy brass oil can in one hand and pointed a greasy finger directly at Ethan’s chest.

"You touch that bypass again, Ethan, and I’ll have the yard guards throw you in the bay," MacNair roared over the rumble of the fireboxes. "I’m holding eighty pounds of pressure for the main shop overhead hoists. The machine shop foreman has six engine shafts suspended on the overhead traveling crane right now. You bleed off forty pounds for your damn slipways, and those shafts drop twenty feet into the lathe beds."

Ethan didn't let go of the spanner. He set his boots flat on the clinker-littered floor and looked MacNair in the eyes. "If those ways stay frozen, Angus, those engine shafts won't have a hull to sit in come high noon. The tallow down on Slipway Four is like hardened paraffin. It’s six degrees colder down at the water’s edge than it is up here in your heat engine room."

"Then get your boys out there with timber scrapers and elbow grease," MacNair spat, setting his oil can down on a wooden tool chest with a loud clatter. "That steam belongs to the shop plant. Mr. Scott signed the morning fuel order himself. Every bushel of coal I burn costs the Union Iron Works nine dollars a short ton, and I'm not wasting forty short tons of good Vancouver steam coal to heat up the bay for the seagulls."

"Irving Scott isn't down under the bilge right now," Ethan said flatly, his voice low and steady. "I am. Calvin Ross says the tide is coming in with a cross-current off the point. If the hull hangs up on the lower blocks because the grease won't slide, the tail shaft will take a lateral twist that'll warp the stern frame before she ever touches salt water. You want to explain to the Navy Board why a three-million-dollar cruiser has a twisted tail shaft?"

MacNair glared at him, his brow furrowing beneath a layer of coal dust. He looked past Ethan toward the open bay doors, where the cold salt fog was drifting across the open yard, curling like pale smoke around the iron wheels of the scrap carts. He cursed softly in broad Gaelic, reached down, and grabbed his grease rag, slapping it against his thigh.

"Twenty pounds," MacNair grumbled, pointing a thick thumb at the pressure gauge mounted on the brick pier. "Not a grain more. And if I hear the main hoist whistle down in the machine shop start to sputter, I turn the wheel back down from inside the boiler room, whether you're hooked up or not."

"Fair enough," Ethan said. "Give me two hoses on the south track and two on the north."

"Take the heavy rubber hoses from the pump house," MacNair snapped, turning back toward his fires. "And keep your boys from tripping over the lines. If anyone bursts a seam on my high-pressure feeds, I’ll take the cost out of your wages."

Ethan didn't wait for the engineer to change his mind. He turned on his heel and strode out of the heat into the damp air of the yard.

The yard was waking up in earnest now. By half-past five, the shadows between the massive timber framing shops and the sheet-metal yards were filled with the sound of eight hundred men at work. The air was a cacophony of sound that had its own rhythmic heartbeat—the heavy thwack-thwack of broadaxes shaping white oak timbers, the deafening clack-clack-clack of pneumatic riveting hammers echoing from deep within the double bottom of Hull 21, and the sharp whistle of small yard locomotives pulling carloads of steel plate along the narrow-gauge tracks.

Ethan crossed the muddy yard toward the tool house, where twenty young apprentices and day laborers were huddled around a braziers of burning coke, warming their blue-fingered hands before the dawn shift.

"Alright, pick up those hose reels!" Ethan called out, his voice cutting cleanly through the noise of the machinery. "Get the heavy armored steam lines out of Storage Shed B. We're piping hot steam down to the lower ways on Slipway Four."

The boys moved quickly. Ethan Burke was not a foreman who shouted just to hear his own voice, and when he gave an order, it usually meant someone's hand or leg was at risk if things weren't done right. Two young men—one of them an Irish kid named Jimmy Doyle who had only been in the country six months—grabbed the iron handles of a heavy hose cart and began hauling it across the gravel.

Ethan walked alongside them, his brass badge catching the dim yellow light of the arc lamps that hung from the high gantry structures. The morning light was beginning to bleed through the fog over the East Bay hills—a dull, leaden gray that gave no warmth to the wet timber or the cold sheets of hull plate stacked twenty feet high along the slipway tracks.

When they reached the slipway, Calvin Ross was standing at the edge of the cribbing, holding a long spruce measuring rod against the hull's keel. Beneath him, the ground fell away sharply toward the muddy shore of the bay. The smells here were different from the rest of the yard—less coal smoke, more salt water, rotting eelgrass, wet mud, and the heavy, sweetish, stomach-turning reek of hundreds of pounds of boiled animal fat, lard oil, and soft soap smeared thick over the wooden tracks.

"We got twenty pounds of steam coming off the boiler house," Ethan told the master mechanic as the apprentices began unrolling the thick canvas-wrapped hoses.

Calvin grunted, leaning over to inspect the coupling on the nearest steam lance—a six-foot length of iron pipe fitted with a brass nozzle and a wood-wrapped handle. "It better be enough. The wind’s veering north-northeast. It’s drying the salt spray right onto the lower timbers. Look at that track."

Ethan stepped over the heavy oak ground way—a solid timber course two feet wide and two feet deep, anchored into the muddy earth with massive iron drift-bolts. The top surface of the timber was covered with a three-inch layer of launch grease. On a warm summer afternoon, the grease would be soft as fresh butter, allowing the upper timber framework—the sliding ways—to drop into the bay like a sled on hard-packed snow. But under the cold damp of this November morning, the surface had turned pale and crusty, coated with a skin of stiff salt crust that looked like ice.

"If we drop the hull on that," Ethan said, stooping to press his knuckle into the tallow, "the friction will tear the skin right off the ways. It’ll burn the wood dry before she moves fifty feet."

"And then she stops," Calvin added grimly. "Right in the middle of the slipway. Half in the water, half out. And when the tide turns and drops six feet by two o’clock, the stern hangs in deep water with no support while the midship is stuck on the rocks. She’ll snap her spine like a dry pine twig."

Ethan straightened up, his face set hard. "She won't stop. Connect the steam lances to the auxiliary line."

Jimmy Doyle and another apprentice dragged the thick black hose to the main valve tree and slapped the brass union tight with an iron wrench.

"Open her up!" Ethan shouted toward the valve station.

With a deep whump and a shuddering rattle that shook the hose cart, live steam rushed through the line. The heavy rubber hose stiffened like a copper rod, snake-coiling in the mud before settling down. White clouds of wet steam shot out from the brass nozzles at the end of the lances, instantly swallowing the low-water end of the slipway in a thick, boiling white mist.

"Get under there!" Ethan commanded the steam crew. "Keep the nozzles three inches off the timber. Don't melt the tallow off—just soften it! We want it pliable, not running down into the mud!"

The men scrambled under the dark, cavernous shadow of the ship's bottom.

Working beneath a hull on launch day was a job that tested a man’s belly. Above their heads lay ten thousand tons of steel, oak, and iron, held off the earth by nothing more than thousands of yellow pine blocks, wooden shores, and oak wedges. The ship was not yet in her element; she was an artificial mountain resting on wooden legs, suspended in mid-air over a muddy slope. Every knock of a hammer, every hiss of escaping steam, every shift in the wind caused the massive timber structure to groan and creak like a living thing trying to wake up.

Ethan slouched low, crawling beneath the turn of the bilge where the heavy wooden shores—the stout cedar trunks that held the hull upright against the staging—braced the red-leaded hull plates.

The noise under the hull was deafening. The steam lances roared with a wet, screaming sound as the iron workers swept them back and forth over the greasy ways. The cold tallow hissed and popped as the hot steam hit the salt-crusted surface, instantly filling the narrow space beneath the ship with an overpowering smell of hot rendered fat, boiled mutton oil, and hot pine resin.

Ethan held his lantern high, his eye running up the long, straight line of the ground ways toward the upper end of the slip. He could see the silhouettes of twenty men—the wedge drivers—standing in two long rows along the inner keel track. Each man held a sixteen-pound wooden maul made of tough hickory bound with iron rings.

At the head of the track stood Thomas Vance, Silas Vance’s younger brother, a seasoned shipwright whose shirt was already soaked through with sweat despite the morning chill.

"How’s she looking down there, Ethan?" Thomas yelled through the steam clouds, his voice booming through the wooden framework.

"The track’s warming up!" Ethan called back, his boots squelching in the greasy mud alongside the timber run. "Keep your drivers ready! We’re going to need to lift the weight off the keel blocks the second the tallow softens!"

"My boys are ready!" Thomas roared back, spitting onto his palms and gripping his wooden maul. "Just give the signal when the depth gauge hits fourteen feet!"

Ethan stepped closer to the center line, leaning under the keel blocks. The keel blocks were stacks of three-foot-long oak timbers, arranged like giant wooden cribs, carrying the massive centerline weight of the cruiser's iron keel plate. Between each layer of timber were soft pine wedges, driven tight weeks ago to hold the ship true while her ribs were riveted together.

He unbuckled a small leather case from his belt and pulled out a iron plumb bob attached to a fine braided silk line. He held the brass bob against the lower edge of the ship’s keel plate, hanging it down to a marked brass tack driven into the concrete cap of the slipway foundation.

The heavy brass weight hung motionless, perfectly centered over the tack.

"She hasn't settled an eighth," Ethan muttered to himself, letting out a long breath he hadn't realized he was holding.

If the hull had settled unevenly during the night—if the muddy ground beneath the slipway piling had yielded even half an inch under the thousands of tons of steel—the iron plates of the outer bottom would be under uneven tension. If you tried to launch a ship with a twisted bottom, the launch cradle would jam in the side ways long before she reached the water.

He reached up, touching the dark red lead paint of the ship's belly. The iron was freezing cold to the touch, carrying the salt chill of the ocean mist that had hung over it all night. But under his palm, he could feel a faint, continuous vibration—the deep hum of the shop machinery transmitting through the ground, mixed with the far-off shudder of the bay's incoming tide slapping against the outer dock pilings.

"Burke!"

A voice called down from the upper staging. Ethan turned, ducking his head under a low cross-brace, and walked out from under the dark belly of the ship into the misty morning light.

Standing on the wooden ladder three levels up the launch staging was Richard Miller, the assistant superintendent of the yard. Miller was dressed in a clean, dark wool suit, a bowler hat pinned tight to his head against the wind, and a stiff white celluloid collar that looked completely out of place against the greasy timber background of the slipway. He held a leather-bound clipboard tucked under his arm, his fingers gloved in grey kidskin.

"Burke!" Miller called down again, waving his gloved hand impatiently. "What in God’s name is all this steam doing down here? Mr. Scott is in the office with the naval inspection board, and they can see clouds of boiler smoke rising from the slipways from their breakfast room at the Palace Hotel!"

Ethan wiped his hand on his trousers and walked to the foot of the ladder, looking up at the assistant superintendent.

"The grease on the lower ways was frozen stiff, Mr. Miller," Ethan said calmly. "If we didn't get steam on the timbers, the cradle would have burnt the ways dry ten feet past the trigger."

Miller came down two rungs of the ladder, his polished leather shoes slipping slightly on the wet oak planks. He grabbed the handrail with a scowl. "The navy inspectors don't care about your grease, Burke. Admiral Benham is coming through the front gate at eight-thirty sharp for the hull inspection. He expects the slipways to be clear of hoses, coal dust, and clutter. Look at this place—it looks like a railway yard in a snowstorm!"

"It’ll look a lot worse if his flagship gets stuck on the ways at twelve o'clock," Ethan replied, not yielding an inch. "We’ve got the steam lances running on forty-minute shifts. As soon as the tallow’s workable, we’ll haul the hoses back to the shop."

Miller clicked his tongue, adjusting his bowler hat. "Mr. Scott wants to know if the main wedge-driving is still set for seven o'clock."

"It is," Ethan said. "Assuming the steam holds."

"It had better," Miller grumbled, looking down at his pocket watch. "The train from Sacramento is running on time. The Governor’s party has already left the depot. There are fifty reporters from the San Francisco Chronicle and the Examiner taking cabs down Iowa Street right now. If anything delays the launch, it won't just be a matter of grease, Burke. It’ll be the company’s reputation."

"Reputations don't float, Mr. Miller," Ethan said dryly. "Iron does. Provided we do the job right down here."

Miller shot him a sharp look, opened his mouth to say something more, but was interrupted by a loud, tearing sound coming from the outer end of the slipway—a sound like thick canvas ripping under extreme strain, followed by a dull thump that echoed out over the gray waters of the bay.

Ethan turned instantly, his eyes narrowing as he looked down the long slope toward the water's edge.

Down at the outer end of the ground ways, where the timber runs entered the tide, a white geyser of foam had erupted around the lower timber bracing. One of the heavy iron-bound spur shores—a thirty-foot fir log used to hold the lower cradle against the drag of the tide—had snapped clean through near its iron collar, its splinters rising to the surface like jagged wooden teeth.

"Get down there!" Ethan shouted to Calvin Ross, already sprinting along the narrow walkway between the slipways.

Miller scrambled back up the ladder out of the way, his face suddenly losing its color. "What was that? Did the hull shift?"

Ethan didn't answer him. His heavy, nail-studded boots pounded against the wet pine planks of the slipway cat-walk as he ran toward the water. Behind him, the crew of steam lances dropped their iron pipes, the escaping steam roaring into the cold air as they rushed after their foreman.

At the edge of the slipway, the tide was already swirling fast, gray and yellow with silt pulled up from the mudflats. The snapped timber was floating in the eddy, its splintered end bobbing up and down in the wake of a passing tugboat that was pulling a coal barge toward the city docks.

Calvin Ross was already there, kneeling at the edge of the submerged planking, his arm soaked to the elbow in freezing salt water as he felt around the submerged iron fittings.

"It wasn't the weight of the hull!" Calvin yelled over the sound of the surf. "It was the wash from that damn tugboat! She came by too close to the point, and the swell caught the lower cradle underwater!"

Ethan reached the edge, panting, his breath coming in long white plumes. He looked out at the bay. The tugboat—a black-stacked vessel named the Alert—was churning away toward North Beach, completely oblivious to the havoc its wake had caused at the slipway.

"Did the cradle slide off the track?" Ethan asked, dropping to his knees beside Calvin and peering down into the murky, swirling water.

"I can't tell," Calvin grunted, his face red with exertion as he strained to feel the submerged alignment rail. "The lower shoe feels loose. If the cradle jumped the guide flange underwater, the whole starboard side of the launch framework is sitting two inches out of line right now."

Ethan pulled off his leather coat, tossed it onto the timber staging, and began unbuttoning his wool cuffs.

"What are you doing?" Calvin asked, staring at him.

"I'm going down to check the timber shoe," Ethan said, pulling his boots off one after the other. The wood of the pier was ice-cold beneath his wool socks, but he didn't hesitate. "We’ve got no time to bring the diver up from Dock Two. It’ll take him an hour just to get into his brass helmet."

"Ethan, that water's forty-five degrees!" Calvin warned. "And the tide's coming in like a millrace!"

"Hold my belt," Ethan grunted, stripping down to his flannel shirt and long underwear. He stepped down to the lowest submerged timber, his feet instantly burning with the bite of the salt water.

He took a deep, lung-filling breath of the salty air, gripped the slippery edge of the main timber way, and plunged down into the freezing gray water of San Francisco Bay.

The cold hit him like a physical blow, knocking the wind almost entirely out of his chest. His eyes stung as he opened them underwater, viewing a dim, green-gray world of swaying brown kelp, floating wood splinters, and massive shadow shapes.

Above him loomed the dark, terrifying shadow of Hull 21, her red-leaded iron plating stretching away into the gloom like a sunken cliff. Directly in front of his face were the massive submerged timbers of the ground way, coated in a slimy mixture of tallow and salt water.

Ethan pulled himself down along the timber track, his hands clawing for a grip against the smooth, greasy wood. He reached the lower guide flange—a heavy strip of iron bolted to the outer edge of the track to keep the launch cradle moving in a straight line.

His fingers searched the submerged wood.

The iron flange was bent out three inches near the break, crumpled by the force of the timber shore when the tugboat’s swell hit the cradle. Worse, a heavy wedge of oak from the shattered shore had jammed itself deep into the narrow slot between the sliding cradle and the ground way, locking the two massive timber assemblies together like a wedge in an oak log.

If they dropped the triggers at high noon with that wooden wedge jammed in the submerged track, the hull would move fifty feet, hit that jam, and violently shear off her starboard sliding frame. The entire forty-five hundred tons of steel would twist off the ways and capsize into six feet of shallow mud.

Ethan pushed off from the submerged timber with his feet, shooting back up to the surface.

He broke the water with a loud gasp, his head throwing off a spray of saltwater as he caught the edge of the dry timber frame. Calvin Ross grabbed him by the shoulders of his shirt and dragged him hauling up onto the catwalk.

Ethan lay on the wet wood for a second, his chest heaving, his teeth chattering so hard he could barely speak. His skin had turned a mottled, purplish white.

"What... what did you see?" Calvin asked, tossing Ethan’s heavy wool coat over his shivering shoulders.

"The... the guide flange is bent," Ethan managed to say, his breath coming in jagged gasps as the cold wind hit his wet shirt. "And there's... there's an oak wedge jammed clean between the sliding track and the ground way. Right at the eleven-foot tide mark."

Calvin swore softly, looking out at the gray water. "Can we clear it with a pry bar?"

"No," Ethan said, hauling himself up to a sitting position, his fingers stiff as iron nails. "It’s wedged in tight under the weight of the outer cradle shoe. We’ll have to cut it out... or pull the entire lower section of the flange."

The yard horn struck six o'clock from the distant tower of the main machine shop. Six sharp, brassy notes that rolled across the foggy bay, marking six hours until high noon.

Ethan looked down at his numb, trembling hands, then up at the immense, red-painted bow of the cruiser Olympia rising above the slipway staging like an unyielding mountain of cold iron.

"Get... get the shipyard blacksmith," Ethan rasped, forcing himself to his feet and pulling his wet boots back onto his freezing feet. "Tell him to bring a long iron cold-chisel and a twenty-pound sledge. We're going under the water again before the tide gets any higher."