Cartographia Imperialis

Hive / Naval Fortress · Segmentum Obscurus

Port Maw

Battlefleet Gothic returns to Port Maw for work that cannot be done during a voyage. Guns need ammunition, machinery needs repair and depleted crews need…

Open on interactive mapOpen in M42
ClassificationHive / Naval Fortress
SegmentumObscurus
AllegianceImperium / Imperial Navy
Imperial NavyBattlefleet GothicGothic WarGothic Sector

Overview

Battlefleet Gothic returns to Port Maw for work that cannot be done during a voyage. Guns need ammunition, machinery needs repair and depleted crews need people to fill the vacant stations. The naval complex has to prepare ships for wars spread across an entire sector.

Accounts disagree over the body beneath its installations. Some describe an artificial, hollow construction; later depictions show a conventional planet. The docks are less ambiguous in their purpose. Whatever shape their foundations take, they must keep the fleet supplied. During a blockade, a fortress can remain intact while the vessels depending on it run short elsewhere.

History

Heresy accounts describe a hollow artificial body developed into a naval base during the Great Crusade. Later illustrations show a conventional planet. The sources agree on the naval role more readily than the shape of the place performing it.

Military significance

Battlefleet Gothic commands and supports its operations from Port Maw. Dense defences helped preserve the base during the Gothic War, but could not prevent a long Chaos blockade. The installations remained standing while their ability to sustain distant operations was restricted.

M41 and M42 status

M41 · Pre-Rift

Headquarters of Battlefleet Gothic

Port Maw survived Abaddon’s Twelfth Black Crusade. Its endurance under blockade is recorded; capture by the enemy is not.

M42 · Era Indomitus

Later local condition unverified

The cited material gives no complete report of post-Rift damage or fleet strength. The population above 200 billion belongs to an older hive-world account. The relationship between the depicted planet and artificial installation also remains unresolved.

Timeline

Construction of a major Imperial fleet installation begins.

Port Maw withstands attack but suffers a prolonged blockade.

Related charted locations

Administrative record

Tithe grade: Unrecorded

Population: Over 200 billion (older hive-world record)

Chart placement and sources

Provisional placement

The Gothic Sector map and indexed background place Port Maw within its namesake subsector in Obscurus.

The regional identity is supported but this galactic point is uncalibrated. Conflicting physical depictions are a separate issue.

Source-reviewed regional estimate in the existing 0–1000 chart. The retained galaxy anchors, exact point and any ring size are not surveyed coordinates or territorial boundaries.

  1. Lexicanum: Port Maw — Secondary reference
  2. Lexicanum: Port Maw Subsector — Secondary reference

    Book references indexed by this source: Battlefleet Gothic Rulebook (indexed; page not specified by accessed entry)

  3. Lexicanum: Port Maw (planet) — Secondary reference
  4. Lexicanum file index: Coronid Deeps map — Secondary reference

The dossier is available offline. Reference links open external websites.

Explore the surrounding galaxy

Cartographic positions and several administrative details are intentionally approximate where published Warhammer sources conflict or provide no canonical coordinate system.