Japanese map symbol for a fishing port

Crossed fish device marking a fishery harbour.

Also known as: Gyoko mark, Fishery harbour mark

Maps & navigationStandard profile

Meanings

Denotes a designated fishing port on a Japanese topographic map.

Officially standardisedVerified fact
Marks a fishing port designated under Japanese fishery port law on a GSI topographic sheet.
Contexts: Maps
Officially standardisedVerified fact
Is a separate designation from the general port symbol, the two laws being distinct, so a harbour may carry either mark or neither.
Contexts: Maps

Two narrow tapering shapes crossing near their midpoints, each reading as a fish.

Part of the same system as: Japanese map symbol for a port
The legend's other harbour mark: a designated port, drawn with an anchor rather than crossed fish.

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.

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

Meanings

Denotes a designated fishing port on a Japanese topographic map.

Officially standardisedVerified fact

Marks a fishing port designated under Japanese fishery port law on a GSI topographic sheet.

Contexts: Maps

Officially standardisedVerified fact

Is a separate designation from the general port symbol, the two laws being distinct, so a harbour may carry either mark or neither.

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