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
sea fort canonical	14
coastal artillery fort	13
fortified island	13
Maunsell sea fort	5
sea fortress	5
coastal defence fort	3
maritime fortification	2
naval fortress	1
offshore fortification	1
pirate stronghold	1
seaside castle	1
tidal island fort	1

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
Fort Ricasoli	coastal fortress
Fort Tigné	fort
Fort Cambridge (Sliema)	fort
Concrete Battleship	—
Fortress El Fraile	—
Medak surface form: Medak Fort	fort
Aldona surface form: Corjuem Fort	fort
Reis Magos surface form: Reis Magos Fort	fort
Aguada Fort	coastal fort
Reis Magos Fort	fort
Sinquerim Fort	fort
Fort Aguada	fort
Terekhol Fort	fort
Fort Boyard	—
Fort Charles	fort
Fort James	fort
Fort Carlisle	fort
UNESCO World Heritage Site component surface form: Fuerte de San José el Alto	fort
Fort Santa Agueda	fort
Fort St. David	fort
Ita Fort	fort
Mangalore fort surface form: Mangalore Fort	fort
Imabari Castle	seaside castle
Revdanda surface form: Revdanda Fort	fort
Fort Siloso	coastal artillery fort
Murud-Janjira Fort	—
palace complex of Ahilyabai Holkar	fort
Neemrana surface form: Neemrana Fort Palace	fort
Fort Ussher	fort
Keiss Castle	coastal fortress
Fort Mill (a colonial-era fort and grist mill) surface form: Fort Mill (colonial-era fort and grist mill)	fort
Taqah surface form: Taqah Fort	fort
Bassein Fort	fort
Fort Crèvecœur, Accra	coastal fort
Belapur surface form: Belapur Fort	fort
Vasai Fort	fort
Mandawa surface form: Mandawa Fort	fort
Chìkàn Lóu	fort
Yi Tzai Golden Castle	coastal fortress
Yi Tzai Cheng surface form: Eternal Golden Castle	coastal fortress
Groß Friedrichsburg	fort
Fort Dorothea	fort
Fort Louise	fort