Map

Complete map, including ports and labels added in Zubmariner DLC. While the tiles will change location (see below, under Map Generation), this may help a new player identify partially revealed locations.

The map or chart of the Unterzee is your primary method of navigating the treacherous, dark waters. Unless a Correspondent legacy is passed on, the Unterzee will be rearranged for each new captain.

Table map

The map is divided into 36 "tiles," most of which can be rearranged. Crossing from one tile to another will be recorded in the Ship's Log, mentioning the name of the new tile, if any, and a short blurb about it.

Here is one possible layout of the map tiles, represented with a table. While this arrangement is only one possible tile arrangement, the list of ports for each tile, not including light-ships, is accurate.

The Unterzee Map
Boreal Reach	Palmerston's Reach	Frostfound	Void's Approach	Stormbones	Pillared Sea
Codex Whither	Mount Palmerston Anthe	Frostfound	Avid Horizon Chapel of Lights	The Undercrow	Irem
Tomb Colonies	Stonesoul Isles	Nameless Tile	Sea of Voices	Rattsey	The Empire of Hands
Venderbight	Salt Lions Wrack	-	Godfall Polythreme Dahut	Nuncio Nook	Empire of Hands
Southern Archipelago	Demeaux's Gate	Corsair's Forest	Sea of Lilies	Salt Steppes	The Calumnies
Hunter's Keep Fallen London Mutton Island Low Barnet	Demeaux Island	Gaider's Mourn	Wisdom Scrimshander	Khan's Glory Khan's Heart Khan's Shadow	Aestival Hideaway
Cumaean Canal	Shepherd's Wash	The Snares	Principles of Coral	Stamford's Expanse	The Chelonate
Cumaean Canal Staging Area Avernus Naples Vienna	Shepherd Isles Abbey Rock Station III	Pigmote Isle	Port Cecil	Isle of Cats Visage Rosegate	The Chelonate Gant Pole
Iron Republic	The Promised Sea	Nameless Tile	Myceligaea	Sea of Autumn	Gossamer Way
Iron Republic	The Fathomking's Hold Aigul	The Eye (doesn't always exist)	The Uttershroom	Mangrove College	Saviour's Rocks The Wreck of the Nocturne
Dawn's Edge	The Carnelian Coast	Crying Heights	Adam's Cape	Southern Wall	Sea of Statues
Grand Geode The Dawn Machine	Port Carnelian	-	Adam's Way	Varchas	Kingeater's Castle

Ship's Log

Each tile has a unique entry into the Ship's Log when you sail into it. This is a comprehensive list of each tile's name, ports, and the Log entry given upon entering.

Tile Name	Ports	Log Entry
Boreal Reach	Codex Whither	Boreal Reach. Is this snow? Touch it, and it puffs to vapour. Your crew huddles close to the warmth of pipe and funnel.
Tomb Colonies	Venderbight	Dust, echoes: even a sepia tint to the air. These are the waters around the Tomb-Colonies.
Southern Archipelago	Hunter's Keep Fallen London Mutton Island Low Barnet	Home waters. Zailors dawdle at the rail, watching for the lights of London.
Cumaean Canal	Cumaean Canal Staging Area	Little ships throng the waters here. The crew go wistful: they swap old stories of sunlit sea. We draw near to the Cumaean Canal, the way to the surface.
Iron Republic	Iron Republic	Sizzling vapours rise from the sea. Time slips sideways. A coil of rope has stung a stoker, and his fellows beat it to death. We are under the hand of the Iron Republic.
Dawn's Edge	Grand Geode	Came on deck to find the metal sharp with sparks. Ozonal coronas haunt the ship. This is Dawn's Edge.
Palmerston's Reach	Mount Palmerston Anthe	Palmerston's Reach. There is brimstone on the wind.
Stonesoul Isles	Salt Lions Wrack	A baked breeze rises, the improbably scent of stone out of some distant desert. You are close to the Salt Lions.
Demeaux's Gate	Demeaux Island	Here the wilder airs mingle with the airs of the near reaches. Demeaux's Gate, named for a navigator lost above. How did his bones come below?
Shepherd's Wash	Shepherd Isles Abbey Rock Station III	Shepherd's Wash, the salty hinterland of London, home to hermits, nuns and shadowy business.
The Promised Sea	The Fathomking's Hold Aigul	The Promised Sea. All through this place, the song of the Drownies lies shivering-sweet along the wind.
The Carnelian Coast	Port Carnelian	The Carnelian Coast. Far to the South, the Neath-roof glimmers above the Mountain of Light.
Frostfound	Frostfound	Frostfound, vast and chilly. A fortress sieged by questions, answers, and riddles.
The dark Unterzee	Light-Ship	The world is webbed with invisible lines. You've crossed one. Tighten them, and it would split like a fruit. No landlubber would notice the change. But you feel the air prickle on your skin. Somewhere new. Here the slate-black sea is like rippled glass, spiked with light from the roof.
Corsair's Forest	Gaider's Mourn	Stalagmites loom in the distance like the cranes of Wolfstack Docks, but vaster, vaster. The Corsair's Forest. Our lookouts are watchful.
The Snares	Pigmote Isle	Creeping tendrils of fungus, zee-weed, unnamable flora. We enter the Snares.
The dark Unterzee	Light-Ship (1/5 chance) The Eye (1/5 chance, not a port)	Something forgotten is here. Spined towers rear in the light of the false-stars. Ware reefs. The wind carries the echo of distant chants. Long-dead priests still count the hours in this place. A sudden fog of spores! Zailors sneeze. The sound echoes flatly in the soupy air. The zee here is warm. Bubbles rise and burst with lazy menace. The fire in the earth is restless.
Crying Heights	-	The Crying Heights, where the Blue Prophets call the names of those about to die.
Void's Approach	Avid Horizon Chapel of Lights	This must be Void's Approach. The air crackles with frosty radiations. To the North, the false-stars fail in the darkness.
Sea of Voices	Godfall Polythreme Dahut	'We hear those voices that will not be drowned.' This is the Sea of Voices, where nothing is truly dead.
Sea of Lilies	Wisdom Scrimshander	We watch for fungal-pads in the Sea of Lilies. There is a prison here, guarded by knot-oracles...
Principles of Coral	Port Cecil	The Principles of Coral. The corpse-rainbow glow from beneath the waves echoes the false-stars above.
Myceligaea	The Uttershroom	The water is sluggish with hyphal threads. Violet vegetable bulks break the surface. Myceligaea!
Adam's Cape	Adam's Way	A carmine tint to the waves. We're approaching Adam's Way, 'where flows the Mountain's blood'.
Stormbones	The Undercrow	We enter the Stormbones. St Eligius sends his fire to dance on the air, on deck. Very far away we see the great light of the Ragged Crow.
Rattsey	Nuncio Nook	Scuttering and chittering in the corners of the hold. Humped shapes on the deck rail. Rattsey air emboldens vermin.
Salt Steppes	Khan's Glory Khan's Heart Khan's Shadow	The Salt Steppes. This is the domain of the New Khanate, whose ancestors came here long before London fell...
Stamford's Expanse	Isle of Cats Visage Rosegate	The false-stars above are feral amber, like tigers' eyes. Stamford's Expanse, named for one who lost his child to cats.
Sea of Autumn	Mangrove College	The mists of the Sea of Autumn get into the eyes, the heart. It is not unusual to find yourself in unsuspected tears.
Southern Wall	Varchas	A buttery bloom of light on the southern horizon! You approach Varchas, the Mirrored City.
Pillared Sea	Irem	Strange puffs of warmth from the air behind the ice. This is the Pillared Sea, where Irem will lie. Lies. Has always lain.
The Empire of Hands	Empire of Hands	We approach the Empire of Hands. Let us clasp our souls tight, lest the Pentacost Apes take them from us.
The Calumnies	Aestival Hideaway	And now we enter the Calumnies. There is a wild and glorious scent in the air. A kind of light. Why do zailors fear this place?
The Chelonate	The Chelonate Gant Pole	Another zee-beast corpse afloat. So much carrion. We approach the Chelonate.
Gossamer Way	Saviour's Rocks The Wreck of the Nocturne	A floating strand of web caresses your face. The air hints at spiders.
Sea of Statues	Kingeater's Castle	We have entered the Sea of Statues. Giants gape at us. Kingeater's Castle rises ahead, where fools give up their future.

Behind the scenes

Map Generation

The placement of map tiles is not completely randomized. The tiles making up the western and southern coastlines are always in the same position, as is the tile in the northeast corner.

Even then, the tiles that can be rearranged can't be just anywhere. The map is broken up into regions, with various tiles restricted to each region. For example, the northern edge of the map - not including the corners - will always be made up of Void's Approach, Palmerston's Reach, Stormbones, and Frostfound, but they can be in any order. This map shows the different regions; within each one (other than the western and southern edges) tiles will be randomly placed.

In addition, many tiles have more than one configuration, allowing for variations in island position, light buoys, and spawn layouts. Different tile layouts will always preserve the same ports and landmarks. The only exceptions are the two nameless tiles, which can vary dramatically.

Although the map layout does not seem to change dramatically, there are 6 billion possible arrangements of the map tiles, not including variations of each tile. If all 36 tiles could be rearranged anywhere on the map, there would be 372 duodecillion possible map layouts.

List of Regions

The uncolored areas are all fixed points in the Unterzee. They will always be there. Each colored zone's tiles will only swap with each other.

Near Home Waters

• Corsair's Forest
• Demaux's Gate
• Shepherd's Wash
• Salt Lions
• The Snares
• one nameless tile

The Frozen North

• Void's Approach
• Palmerston's Reach
• Stormbones
• Frostfound

The Distant East

• The Calumnies
• The Empire of Hands
• The Chelonate
• Gossamer Way

The North-East

• Principles of Coral
• Sea of Lilies
• Salt Steppes
• Rattsey
• Sea of Voices

The South-East

• Sea of Autumn
• Myceligaea
• Stamford's Expanse
• The Promised Sea
• one nameless tile

Pillared Sea

• Pillared Sea

Revealing the map with TexMod

It is possible to remove the mask temporarily by using a third party program called TexMod. To do so:

• Download TexMod (newer versions of the software may work, but this version is confirmed as perfectly suited for the purpose).
• Run Sunless Sea through the program, in logging mode. Ensure that replace texture is marked.
• Open the chart.
• Press * to filter drawn textures (i.e. what is seen on the screen).
• Use + and - to navigate through the textures, until the shroud on the map disappeared and is replaced with a green tint.

How does this work? TexMod allows you to browse textures loaded into memory and will dynamically replace the texture viewed with a solid green one. The shroud is applied to the map as a mask layer and when it is selected, the solid black texture is replaced with a translucent green one. This allows you to view the entire map. In order to identify locations, compare them with the location shapes in our articles.

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  End result

Original map

A map of all locations in Sunless Sea. Some locations are actually not fully implemented, although they show up on the map. There is also an HD-Version [1] available.

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A table version of the original, early-development map layout. Several regions have been moved since this original layout was conceived, and some tiles on this map are in locations where they will never appear in current versions of the game. The Deconstruction and The Sea of Wings have also been replaced by generic nameless and portless tiles. However, the list of ports for each tile, not including light-ships, is accurate.

The Unterzee Map
Boreal Reach	Void's Approach	Palmerston's Reach	Stormbones	Frostfound	Pillared Sea
Codex Whither	Avid Horizon Chapel of Lights	Mount Palmerston	-	Frostfound	Irem
Tomb Colonies	Demeaux's Gate	Principles of Coral	Myceligaea	The Chelonate	The Deconstruction
Venderbight	Demeaux Island	Port Cecil	The Uttershroom	The Chelonate	-
Southern Archipelago	Shepherd's Wash	Corsair's Forest	Stonesoul Isles	Sea of Lilies	Gossamer Way
Hunter's Keep Fallen London Mutton Island	Shepherd Isles Abbey Rock Station III	Gaider's Mourn	Salt Lions	Wisdom	Saviour's Rocks The Wreck of the Nocturne
Cumaean Canal	Sea of Voices	The Snares	Salt Steppes	The Empire of Hands	The Calumnies
Cumaean Canal Staging Area Avernus Naples Vienna	Godfall Polythreme	Pigmote Isle	Khan's Glory Khan's Heart Khan's Shadow	Empire of Hands	Aestival
Iron Republic	Rattsey	Sea of Autumn	Stamford's Expanse	The Promised Sea	Sea of Wings
Iron Republic	Nuncio	Mangrove College	Isle of Cats Visage	The Fathomking's Hold	-
Dawn's Edge	The Carnelian Coast	Crying Heights	Adam's Cape	Southern Wall	Sea of Statues
Grand Geode The Dawn Machine	Port Carnelian	-	Adam's Way	Varchas	Kingeater's Castle

Kickstarter Map

FailBetter games also shipped a limited amount of Unterzee maps for kickstarter backers.