Watercraft
“Turtle”
Bathysphere
North America
The spherical pressure hull for the bathysphere “Turtle”, one of three used in the ALVIN submersible program, the first program to use manned underwater exploration vessels.
The spherical pressure hull for the bathysphere “Turtle”, one of three used in the ALVIN submersible program, the first program to use manned underwater exploration vessels.
In 1845, Joseph Francis patented the galvanized iron lifecar for rescuing shipwreck victims.
Marders were primarily intended for use in the coastal waters to potentially disrupt Allied shipping and invasions.