Submersible fort

Title (Dublin Core): Submersible fort
Subject (Dublin Core): en Imagined technology & prototypes; en Trenches and fortifications
Article Title and/or Image Caption (Dublin Core): Submersible Forts to Protect Our Costs. They are conceived as anchored, floating turrets, capable of discharging torpedoes at the enemy's ships; Caption: The turret-shaped submersible fort can be rotated upon a substructure anchored by means
of four mushroom anchors. Its only armament is represented by a single torpedo tube
Contributor (Dublin Core): A. Steinmetz (inventor)
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War I
Date Issued (Dublin Core): 1918-04
Is Part Of (Dublin Core): Popular Science Monthly, v. 92, n. 4, 1918
pages (Bibliographic Ontology): 512-513
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): Philadelphia
Archived by (Dublin Core): Filippo Valle; Alberto Bordignon (Supervisor)