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Harbour Archive · A fiction · Third revision

The Marrow Coast Index

Eight fog-signal stations on the reach where the light fails before the sound does.

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Preface

The Marrow Coast is the keepers’ name, written in the margins, for the water between the last true headland and the bank where the soundings go soft. It is not on the chart you were sold. On that reach the fog is not an event. It is the weather. A light, however carefully ordered, becomes a rumour at two . What carries is the strike of a bell, the grunt of a , the brief insult of a .

This index is drawn from station logs kept between 1884 and 1971, and from the one survey the Archive still trusts: Lieutenant P. Hobb’s notebook, found dry in a locker at Nun’s Candle. Hobb did not measure beauty. He measured interval, bearing, and whether a keeper answered. We have kept his categories, and we have kept his temper.

Leave beauty to the pilots. They will invent it anyway. Write down the interval.

— P. Hobb, notebook, front paste-down

Eight stations remain in the book as stations, not as ruins in a brochure. Some still sound. Some are silent and still worth the passage: a yoke, a compressor bed, a scorch on an estuary wall. The index will narrow them. The essays will not hurry you.

How to read

Three marks describe a station. They are Hobb’s, not ours. Reach is where the sound has to travel. Signal is the instrument, not the house around it. Watch is whether a person still sleeps within earshot. A station can be silent and still listed: silent means the instrument does not sound. It does not mean the house is gone.

On the figures

Rings stand for the house. The wedge is the carry, drawn to the angle Hobb estimated, not to a manufacturer’s claim. A bell is drawn as a beam so the index can hold it beside a siren. A bare yoke is drawn with almost no wedge. We do not invent a sound to complete a picture.

On using this page

The marks above the index are radio groups: choose one reach, one signal, one watch. They combine. Dashed words open a gloss beside the word; Escape closes it. Each station figure can be enlarged, and Escape closes that too. The bar under the title is your place in the whole page; the marks in the navigation fill while a section is in view. Theme follows your system until you choose otherwise. If you have asked for less motion, the beams stay still.

Index

Reach
Signal
Watch
  • Harrow Bell

    Inner Sound · Bell · Kept · 20s

    Cracked bronze on the inner wall; the note is still true.

  • Cinder Diaphone

    Outer Reef · Diaphone · Automated · 30s

    The cough is the honest part of the blast.

  • Moth

    Headland · Siren · Kept · 10s

    A frayed call. A keeper still signs the log.

  • Low Maroon

    Estuary · Explosive · Silent · was 5 min

    The charges stopped in 1948. The scorch did not.

  • Wrecker's Reed

    Outer Reef · Siren · Silent · discontinued

    Doorway facing the wrong sea. The reed is gone.

  • Nun's Candle

    Inner Sound · Bell · Automated · 15s

    The sisters’ name for the bell that replaced a failed lamp.

  • Grey Measure

    Headland · Diaphone · Kept · 40s

    Two tones, used to time a race the tables understate.

  • Salt Widow

    Estuary · Bell · Silent · since 1962

    The yoke remains. The bell has not been convincingly seen.

If the index clears, no station carries both marks. Choose All on either facet. Comparison, further down, is separate and keeps every station.

Stations

Harrow Bell

A narrow wedge. The crack in the bronze is not drawn; it is in the note.

Inner Sound · Bell · Kept · one strike, twenty seconds

The bell hangs in a yoke of greenheart, twenty yards above the high-water mark on the inner channel wall. Cast in 1886, it cracked in the frost of 1911. The crack runs from the lip toward the crown and stops, as if it thought better of it. Keepers strike it by hand on the even watch and by a clockwork cam on the odd. Ships bound for the inner quay take the sound on the port bow and do not turn until it bears abeam.

Keeper’s note

Cam replaced 1954. The hand-rope is still spliced to the original eye. Do not oil the crack. Hobb’s whole entry is four words: “Answers. Note true.”

Cinder Diaphone

Wide grunt, short cough. The cough is the trailing edge of the wedge.

Outer Reef · Diaphone · Automated · blast, then thirty seconds

The house stands where the chart prints a cross and the pilots print a warning. The diaphone is a low B: two and a half seconds of grunt, a cough on the upstroke, then silence. Automated in 1966. The compressor runs on a diesel a contractor services when he remembers. In fog the sound seems to come from the water rather than the house, which is why strangers put the reef a cable too far south.

Keeper’s note

Hobb called the cough the only honest part. The blast lies about distance. The cough does not. If you are timing your turn by the grunt alone, you are already late.

Moth

A thin call. It frays in weather; the diagram will not.

Headland · Siren · Kept · ten-second call

Compressed air, a ten-second call, named by the keepers for the way the sound frays at the edge, like cloth left on a nail. A person still sleeps in the lee room. The Archive does not print the name. The watch is real: the log is initialled through last March, which is more than can be said for the lights authority that claims the headland and visits it in summer.

Keeper’s note

If the pressure falls below four atmospheres the note splits, and ships report two stations. Bleed the line before you blame the reed. Do not answer a radio enquiry about the second station. There isn’t one.

Low Maroon

A spike. Explosive signals are drawn as beams so the index can hold them.

Estuary · Explosive · Silent · last fired 1948

The signal was a cotton-powder charge thrown from a cradle, once every five minutes in fog. The last charge was fired in 1948. The scorch is still on the quay wall, a black fan the height of a man. People photograph the fan and call it a sunset mark. It is a record of work. The locker with the slanted roof is empty, locked, and still smells of struck match.

Keeper’s note

Hobb disliked the maroon — “a startle, not a signal” — and logged it anyway, because startle is what the estuary would carry when a bell would not. Silence here is a decision, not a failure of maintenance.

Wrecker's Reed

The wedge is what the siren once threw. The angle is the record.

Outer Reef · Siren · Silent · reed failed 1959

The reed corroded through in 1959 and was not replaced. The house was already in dispute between the authority and a salvage firm with a sentimental name. What remains is the compressor bed, four bolts, and a doorway facing the wrong sea. The name is older than the wrecks. It refers to the reed, not to a trade. Correct anyone who tells it otherwise; the Archive has had to do this twice in print.

Keeper’s note

Hobb, who disliked romance, wrote only: “No answer. Door open. Reed gone.” The later hand added a sketch of the doorway and then thought better of that too. The sketch is crossed out. The sentence is not.

Nun's Candle

Two strikes, drawn as one wedge: the striker is one machine.

Inner Sound · Bell · Automated · two strikes, fifteen seconds

An electric striker since 1971. The landing below was used by the sisters from the point convent to reach the infirmary on the town side when the road iced. They called the bell a candle because it was what they had when the lamp on the point failed. The striker is accurate and slightly ashamed of itself: the second blow is softer, which is the clapper returning, not a fault in the current.

Keeper’s note

Do not “correct” the second blow. Pilots who grew up on this sound count the soft one. A perfectly even pair would be a new station, and new stations are how people die on old water.

Grey Measure

Drawn wide. The race hears the long and the short as one weather.

Headland · Diaphone · Kept · long and short, forty seconds

Pilots use the interval to time the tide through the grey race, which runs harder than the tables admit. The long tone is G, the short is B. The keeper listens for the short tone to drop, which it does when the intake ices. That drop has saved more ships than the light on the same headland, a second-order lens Hobb dismissed as “a vanity above six cables.” He was not invited to the lighting ceremony. He attended the fog.

Keeper’s note

If you hear only G, the intake is shut and the race is not where you think. Do not compensate by steering on the light. The light is the vanity. The missing B is the fact.

Salt Widow

Almost no wedge. A bare yoke throws no sound, and we do not invent one.

Estuary · Bell · Silent · yoke bare since 1962

The bell was taken off the yoke on a night in 1962 and has not been convincingly seen again. The yoke remains, and the rope, cut clean, from the top downward. Whoever did it stood on the yoke. Hobb was retired by then. The later hand added one line and stopped keeping the book, which is the only honest way to stop a book of this kind.

Keeper’s note

“Yoke bare. Sounding discontinued. Do not invent a thief; the book is not a court.” The Archive has refused three more colourful endings. This is the ending.

Compare

Set two stations side by side. The lines are Hobb’s, cut to what he would have trusted. The choice does not follow the index filters: a station you have hidden above can still be set here.

Harrow Bell

Reach
Inner Sound
Signal
Bronze bell, 28 cwt, cracked 1911
Interval
One strike, twenty seconds
Watch
Kept, hand and cam
Hobb
Answers. Note true.

Cinder Diaphone

Reach
Outer Reef
Signal
Diaphone, low B, diesel compressor
Interval
Blast, cough, thirty seconds
Watch
Automated, 1966
Hobb
Blast lies. Cough does not.

Moth

Reach
Headland
Signal
Air siren, frays at the edge
Interval
Ten-second call
Watch
Kept; log signed through March
Hobb
Below four atmospheres it splits. Bleed the line.

Low Maroon

Reach
Estuary
Signal
Cotton-powder charge, cradle-fired
Interval
Was five minutes; last fired 1948
Watch
Silent by decision
Hobb
A startle, not a signal. Logged anyway.

Wrecker's Reed

Reach
Outer Reef
Signal
Siren, reed gone 1959
Interval
Discontinued
Watch
Silent; door open
Hobb
No answer. Door open. Reed gone.

Nun's Candle

Reach
Inner Sound
Signal
Bell, electric striker
Interval
Two strikes, fifteen seconds
Watch
Automated, 1971
Hobb
Second blow softer. Do not correct it.

Grey Measure

Reach
Headland
Signal
Two-tone diaphone, G and B
Interval
Long and short, forty seconds
Watch
Kept, for the race
Hobb
Only G means the race has moved.

Salt Widow

Reach
Estuary
Signal
Bell absent; yoke and cut rope remain
Interval
None since 1962
Watch
Silent; book closed
Hobb
Do not invent a thief.

Harrow Bell

Reach
Inner Sound
Signal
Bronze bell, 28 cwt, cracked 1911
Interval
One strike, twenty seconds
Watch
Kept, hand and cam
Hobb
Answers. Note true.

Cinder Diaphone

Reach
Outer Reef
Signal
Diaphone, low B, diesel compressor
Interval
Blast, cough, thirty seconds
Watch
Automated, 1966
Hobb
Blast lies. Cough does not.

Moth

Reach
Headland
Signal
Air siren, frays at the edge
Interval
Ten-second call
Watch
Kept; log signed through March
Hobb
Below four atmospheres it splits. Bleed the line.

Low Maroon

Reach
Estuary
Signal
Cotton-powder charge, cradle-fired
Interval
Was five minutes; last fired 1948
Watch
Silent by decision
Hobb
A startle, not a signal. Logged anyway.

Wrecker's Reed

Reach
Outer Reef
Signal
Siren, reed gone 1959
Interval
Discontinued
Watch
Silent; door open
Hobb
No answer. Door open. Reed gone.

Nun's Candle

Reach
Inner Sound
Signal
Bell, electric striker
Interval
Two strikes, fifteen seconds
Watch
Automated, 1971
Hobb
Second blow softer. Do not correct it.

Grey Measure

Reach
Headland
Signal
Two-tone diaphone, G and B
Interval
Long and short, forty seconds
Watch
Kept, for the race
Hobb
Only G means the race has moved.

Salt Widow

Reach
Estuary
Signal
Bell absent; yoke and cut rope remain
Interval
None since 1962
Watch
Silent; book closed
Hobb
Do not invent a thief.

Colophon

The Marrow Coast is a work of fiction in the form of a harbour archive. Bells, diaphones, sirens, and maroons are real instruments; the stations, the reach, and Lieutenant Hobb are not. Nothing here should be used for navigation, which Hobb would have considered the only unforgivable misuse of a notebook.

Baseline. The page is HTML and CSS only. It expects a browser with :has() and the Popover API — Chrome 121 or newer, Safari 17.4 or newer, Firefox 125 or newer. In that set, the filters, the theme override, the enlarged figures, and the glossary all work from native controls. The index and the station figures reflow to the column they sit in, not merely to the window. Cards in a row share a subgrid so their titles and marks line up. A meter tracks your place; section marks fill while that part of the page is in view; a lens wedge turns as its figure crosses the viewport, on a registered angle. Glossary notes anchor to the word that opened them. Fragment links cross-fade where view transitions exist.

Without :has(), every station stays listed and the theme follows the system. Without popover, figures stay inline and the enlarge control is not offered. Without scroll-driven animation or anchor positioning, the sticky headings and the navigation remain. Reduced motion holds the beams still and does not run the meter. Type is Fraunces and Literata, with Palatino and Georgia behind them.

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A tenth of a sea mile, about 185 metres. Hobb’s “two cables” is the distance at which he stopped trusting a light in ordinary fog.
A piston horn. The downstroke is a low grunt; the return is a shorter, higher cough. The cough travels farther in thick weather than a whistle of the same power.
A small explosive charge, thrown or fired from a timed cradle. Used where a bell would not carry across an estuary. Discontinued on this coast after 1948.