sea fort

C1579
concept

A sea fort is a fortified structure built on or near the sea, typically on artificial islands, rocks, or coastal waters, designed to defend harbors, coastlines, or strategic maritime routes.

All labels observed (15)

Label Occurrences
fort 176
coastal fortress 40
coastal fort 25

Description generation (CDg)

The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.

Instruction
generate a one-sentence description for a given conceptual class.
# Response Format
Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: sea fort
Generated description
A sea fort is a fortified structure built on or near the sea, typically on artificial islands, rocks, or coastal waters, designed to defend harbors, coastlines, or strategic maritime routes.

Instances (293)

Instance Via concept surface
James Fort fort
Nothe Fort coastal defence fort
Basavakalyan Fort fort
Fort Fincastle, Nassau fort
Attock Fort fort
Sonar Quila fort
Cove Fort, Utah fort
Grain Tower
Guy Maunsell
surface form: Maunsell Forts
offshore fortification
Red Sands Fort Maunsell sea fort
Knock John Fort Maunsell sea fort
Nore Fort Maunsell sea fort
Roughs Tower
Burbo Bank Fort Maunsell sea fort
Fort Zoutman fort
Shivering Sands Fort Maunsell sea fort
Fort Amsterdam fort
Fort Plaisance fort
Fort Copacabana coastal fort
Bourtzi (Nafplio) islet fortified island
Fort Augusta fort
Fort Saint-Jean (later installations) fort
Kota Raja Mahadi (fort)
surface form: Kota Raja Mahadi
fort
Forte de Santa Luzia fort
Fort Coenraadsburg fort
Ranikot Fort fort
Khammam Fort fort
Rawat Fort fort
Old Stone Fort Museum fort
Vellore Fort fort
Koppal Fort fort
Kot Diji
surface form: Kot Diji Fort
fort
Thangassery Fort fort
Fort Munro fort
Harihar Fort fort
Negro Fort fort
Fort Rodd Hill National Historic Site coastal artillery fort
Forte de São Mamede fort
Tellicherry
surface form: Thalassery Fort
fort
Fort Willem Hendrick fort
Forte de São Luís fort
Forte de São Domingos da Piedade fort
Forte de São João da Piedade fort
Fort of Santiago da Barra coastal fortress
Fort Sumter
Leme Fortress coastal fortress
Suomenlinna sea fortress
surface form: Suomenlinna
sea fortress
Fort Oranje fort
Karkala
surface form: Karkala Fort
fort
Mudgal Fort fort