Untold. why submarines shaped like turtles failed / Turtle Submersible :

In 1775, David Bushnell pushed the limits of engineering to design a military submarine dubbed the Turtle Submersible, which he created to help the US fight back against the British Royal Navy.

Bibliographic Details
Format: Video
Language:English
Language Notes:In English.
Published: Derry, Northern Ireland : Makematic, 2020.
Series:Academic Video Online
Subjects:
Online Access:Connect to this streaming video (Alexander Street Press)
Description
Summary:In 1775, David Bushnell pushed the limits of engineering to design a military submarine dubbed the Turtle Submersible, which he created to help the US fight back against the British Royal Navy.
Item Description:Title from resource description page (viewed June 9, 2021).
"Artifacts".
Physical Description:1 online resource (2 minutes)
Playing Time:00:01:59