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.

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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
Stack Rock Fort coastal artillery fort
Fort Hubberstone coastal artillery fort
Popton Fort coastal artillery fort
Frogn
surface form: Oscarsborg Fortress
coastal fortress
Fort bij de Nieuwe Steeg fort
Amber Fort fort
Fort Jefferson coastal fortress
Vishalgad Fort fort
Castillo de San Felipe coastal fortress
Fort Saint Anthony (Axim) coastal fort
Fort Apollonia coastal fort
Maheshwar Fort fort
Aragonese Castle of Taranto coastal fortress
Christiansborg Castle (Osu Castle)
surface form: Christiansborg Castle
coastal fort
Kumasi Fort fort
Fort Rupert fort
Tikamgarh Fort fort
Parola
surface form: Parola Fort
fort
American Revolution historic sites
surface form: Fort Ticonderoga
fort
Harwich Redoubt Fort coastal artillery fort
Sadras Dutch Fort fort
Worli Fort fort
El Fuerte fort fort
Fort de la Cigogne fort
Fort Kyk-Over-Al fort
Fort Island fortified island
Bharatpur
surface form: Lohagarh Fort
fort
Fort Denison Island fortified island
Warangal Fort fort
Thorn Island fortified island
Admiral Vladimir von Berg
surface form: Sveaborg
sea fortress
Drop Redoubt fort
Royal Citadel coastal fortress
Fort Augustaborg fort
Srirangapatna
surface form: Srirangapatna Fort
fort
Kacha Qila, Hyderabad fort
Oskar-Fredriksborg Fortress coastal fortress
Moti Daman Fort fort
Fortim do Mar (Pani Kotha)
surface form: Fortim do Mar
—
Fort Scratchley coastal defence fort
Belagavi Fort fort
Kaholmen islands
surface form: Oscarsborg Fortress
coastal fortress
Gulbarga Fort fort
Fort Frederick coastal fortress
Bukkur fortified island
Forte de São Sebastião de Castro Marim fort
Fort Boyard (administrative responsibility may vary)
surface form: Fort Boyard
—
Xiyu Western Fort fort
Fort Carroll —
Xiyu Eastern Fort fort