Refraction at Midday

Chapter summary

• Core event: Yasmina intercepts an imperial quartz transport in the calcite shallows, severing its steering oar with a focused light beam and seizing a chest of high-grade lenses.
• Continuation: Initial chapter opening the arc.
• Closing hook: Mazigh Boubara's flagship drops its optical mirage dead ahead, trapping Yasmina's catamaran against the reef.

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Salt dried white on my collar, stiff as dried parchment against my throat. I crouched on the cross-spar of my twin-hulled dhow, watching the midday sun burn the turquoise shallows of the Tissint shelf to raw silver. A single imperial supply dhow was limping through the calcite channels three hundred yards out, wallowing under the weight of boxed ordnance.

"They are late," Safiya said from the steering bench below. She adjusted the brim of her straw hat, her bronze knuckles resting lightly on the tiller. "Imperial quartermasters usually run on bells, not whims."

"They had to wait for high tide over the outer bar," I said, unhooking the brass-rimmed quartz monocle from its leather neck-thong. "Look at their watch cycle. Third squad changing guard on the bell, marching in stiff little pairs while four tons of pompous naval rigging drags their top-hamper sideways. Pure grade-four prisms in that hold, Safiya. Enough glass to keep our mirrors humming through the winter storms and ensure the crew eats spiced mutton for three full moons."

"And enough imperial guards to skewer us both if your angle slips by half a thumb."

"My angles never slip." I swung down from the rigging, landing light on the cedar planks of the deck, holding the heavy crystal disc between my thumb and forefinger.

The twin hulls of the Sirocco sliced through the clear water without a whisper of spray. Below our keel, pale calcite reefs rose like jagged white ribs through the current, sharp enough to peel an ordinary hull from stem to stern. But the Sirocco drew less than two feet of water, built narrow and fast from seasoned tamarisk wood.

Out on the open channel, the imperial transport raised its yellow pennants. Six guards in copper breastplates lined the starboard rail, their hand-mirrors catching the zenith glare in defensive sweeps. They were scanning for privateer sails, but we were coming in directly out of the sun's glare, our bleached linen canvas lost in the blinding white sheen of the sea.

I braced my hip against the foremast.

Raising the brass rim of the monocle between my bare fingertips, I angled the polished quartz against the blinding zenith glare. Raw sunlight bit into the crystal facets, sending a pulse of searing warmth against my skin as I tilted the rim millimeter by millimeter to catch the exact critical threshold.

"Hold her steady on ninety-four degrees," I said, my pulse steady as I calculated the refraction angle across the calcite shallows. "Give me ten seconds of flat water."

"You have eight," Safiya called back, leaning hard against the tiller. "The swell is rising over the bar."

The imperial dhow grew larger in my sights.

The sea turned flat. The wind held its breath. The sun sat heavy overhead.

I tilted the brass rim three degrees inward.

The quartz caught the noon beam at sixty-three degrees. A needle of concentrated brilliance erupted from the focal tip, sizzling across the blue channel with the sharp smell of roasted brine. I walked the beam along the water, keeping my grip feather-light to avoid burning my fingers, tracking the waterline until the bright point struck the imperial transport's heavy oak steering rudder.

Steam hissed white against the sternpost. A heartbeat later, the seasoned wood burst into bright amber flame. The heavy pivot sheared clean under the thermal shock, snapping with the crack of a splitting spar.

The transport yawed violently to port, her square mainsail catching the wind aback.

"Rudder gone!" I yelled, letting the warm monocle drop against my collar on its leather thong as I threw my weight onto the forward deck. "Bring us alongside before their deck guns find the focal plane!"

Safiya hauled the tiller toward her chest. The Sirocco skimmed across the shallows like a skimming stone, banking hard as our port hull clipped the outer foam of the transport's wake.

Three imperial soldiers raised their defensive brass bucklers, trying to cast a blinding scatter-shield into our eyes. I dipped my shoulder, catching their fragmented glare on the polished steel back of my cutlass and tossing it straight into the helmsman's face. He stumbled back, cursing, hands clutched over his watering eyes.

Our starboard hull struck their bumper timbers with a hollow thud.

My corsairs surged over the low rail. We moved with the practiced quiet of reef runners: no battle cries, no wasted steel. Two of my deckhands dropped hemp ropes around their forward cleat while Bashir and Idris pinned the quartermaster against the mainmast with leveled spears.

I dropped onto their scrubbed deck, my boots leaving damp salt rings on the teak.

"Captain Yasmina al-Ghazwani," the quartermaster choked out, his hand frozen halfway to his short sword. His face was gray beneath his sun-bleached turban. "This cargo carries the seal of the Grand Divan. It is treason to touch a single crate."

"Treason is such a heavy word for a bright morning," I said, stepping past him.

I used the point of my dagger to lever open the brass latch of the center sea-chest. Inside, nested in oiled sheepskin, sat twelve flawless triangular prisms of cut imperial quartz, each as long as my forearm and cold to the touch. They were clear as distilled rain, free of fissures or cloudy inclusions.

One chest was worth three thousand imperial dinars in the free ports of the southern reach.

"Load it," I ordered.

Bashir and Idris lifted the heavy chest between them, heave-tossing it across the gap into the Sirocco's open cargo net.

"A pleasure doing business with the crown," I told the shivering quartermaster, touching the brim of my cap with two fingers. "Tell the Grand Divan their lens-cutters do marvelous work."

I vaulted back onto the Sirocco's cross-deck just as Safiya kicked our bows clear with an ash spar. The twin sails caught the fresh sea breeze, snapping taut with a joyous crack. We bounded across the reef shelf, leaving the wallowing transport dead in the water, her crew still trying to bucket seawater onto their charred stern.

Safiya shook her head, though the corner of her mouth twitched. "That went entirely too easily."

"Skill, my dear mate. Pure, unadulterated geometry." I knelt by the cargo hatch, running a finger over the smooth crystal facets of the top prism. The stone hummed faintly against my skin, charged with ambient solar heat. "We slip through the calcite narrows, make the eastern cove by sunset, and Safiatou can begin grinding the new focal arrays."

"Look ahead," Safiya said. Her voice had dropped all its warmth.

I looked up.

The narrow channel leading out of the shallows was empty a moment before—just two jagged spires of pale calcite rising from the blue sea. But now the air between the rocks warped like heat over a forge.

The shimmer collapsed with a sound like tearing silk.

A massive three-masted war frigate materialized out of thin air, dropping its prismatic camouflage veil. Her black timber hull was sheathed in burnished brass, and forty rotating quartz mirrors sat mounted on her high gunwales, every one of them angled straight at our bows.

High on the quarterdeck of the iron-clad hunter, standing motionless by the rail with one hand rested on his saber hilt, was Commander Mazigh Boubara.

His dark blue naval coat was buttoned tight to the throat, unyielding despite the suffocating noon heat. His gray eyes pinned our little catamaran with the cold, absolute certainty of a closing iron cage.

"Yasmina al-Ghazwani," Mazigh's voice rolled across the water, smooth and entirely without mercy. "Lower your canvas and prepare to be boarded."

Safiya looked at me, her knuckles white on the tiller. "Yasmina?"

I reached for my monocle, my pulse kicking against my ribs as I looked straight into the commander's eyes.

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Chapter notes

• Hook of this chapter: Mazigh Boubara de-cloaks his warship directly in the channel exit, cutting off Yasmina's retreat.
• Next chapter preview: Yasmina attempts a desperate high-speed maneuver to out-angle Mazigh's light barricades.
• Foreshadowing: High-grade imperial quartz secured, revealing imperial reliance on precise geometric lenses.