Japanese map symbol for a customs house

An anchor-derived device marking a customs post.

Also known as: Zeikan mark, Customs post mark

In Japanese:: 税関
In Japanese (Latin):: zeikan

Maps & navigationStandard profile

Meanings

Denotes a customs house on a Japanese topographic map, placed at ports and international airports.

Officially standardisedVerified fact
Marks a customs house on a GSI topographic sheet, at a seaport or an international airport.
Contexts: Maps
Officially standardisedVerified fact
Takes an anchor as its device because the function was historically a maritime one, and the symbol was not redrawn when customs work extended to air freight.
Contexts: Maps

Visual description

A stroke crossed near its head and hooked at its foot, taking the outline of a ship's anchor.

Symmetry: none
Orientation: upright

Confidence

IdentityModerate confidence: Moderate confidence because the identity is documented in encyclopedic references, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useModerate confidence: Moderate confidence because the current use is documented in encyclopedic references, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

Map symbols used on Japanese topographic maps
Geospatial Information Authority of Japan (GSI) · retrieved 2026-08-23
Japan's national mapping agency's own published legend. Cited for the form and meaning of a symbol on Japanese topographic maps; the historical origin of individual symbols is cited separately where claimed.

Last reviewed 2026-08-26

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Japanese topographic map symbols

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Meanings

Denotes a customs house on a Japanese topographic map, placed at ports and international airports.

Officially standardisedVerified fact

Marks a customs house on a GSI topographic sheet, at a seaport or an international airport.

Contexts: Maps

Officially standardisedVerified fact

Takes an anchor as its device because the function was historically a maritime one, and the symbol was not redrawn when customs work extended to air freight.

Contexts: Maps

Confidence

IdentityModerate confidence: Moderate confidence because the identity is documented in encyclopedic references, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but early or supporting evidence is limited, but the regional or cultural match to this specific claim is not precise.
Current useModerate confidence: Moderate confidence because the current use is documented in encyclopedic references, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

Map symbols used on Japanese topographic maps
Geospatial Information Authority of Japan (GSI) · retrieved 2026-08-23
Japan's national mapping agency's own published legend. Cited for the form and meaning of a symbol on Japanese topographic maps; the historical origin of individual symbols is cited separately where claimed.

Last reviewed 2026-08-26