Drzewiecki drop collar
External torpedo launching system
The Drzewiecki drop collar was an external torpedo launching system most commonly used by the French and Imperial Russian Navies in the first two decades of the 20th century. It was designed by Stefan Drzewiecki, a Polish engineer and inventor. He designed and built the first submarine in the world with electric battery-powered propulsion (1881).
Generally, the drop collar consisted of a metal framework that enclosed the torpedo that could be rotated to position it clear of the hull preparatory to firing. More elaborate systems were equipped with an arm that could move the drop collar to the desired firing angle. The French deployed a twin system on the aft deck of the Pluviôse class that could be rotated from 20° to 170° from the centerline on each side of the ship.
Sources and credits
This article is adapted from the Wikipedia article “Drzewiecki drop collar”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Akula1909.jpg by Unknown authorUnknown author, Public domain
- L'vitsa1916-1917a.jpg by Unknown authorUnknown author, Public domain
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