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.
image source
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).
