By Xah Lee. Date:
Two large ship propellers found near some wharf on the north side of San Francisco, California, USA, 2002-09. Note the erosions on the edge of the blades, caused by air bubbles when it spins fast (called Cavitation).
A propellers on exhibit in a northen wharf of San Francisco, California, USA, 2002-09.
This boat propeller measures approx 1.16 meter in diameter. (photo from a email contributor, 2004-09)
Propeller for a small boat.
The scars on the blade are cavitation damage.
MS Europa, build in 1938.
Submarine from World War 1.
Above photos are taken in the Villa Hügel, Essen, Germany, ~2004, contributed by Volker Peters.
«The Prinz Eugen was build in 1938 at Germania-Werf Kiel, it was a heavy cruiser in World War 2. The ship sunk on 1946-12-22 after two tests of atomic weapons.» — photo taken by Volker Peters, 1999, Laboe (Kiel, Northern-Germany).