Photograph - Photograph - Model Breakwater, Model Parapet Wall, n.d
Historical information
Port of Portland Authority Archives
Physical description
Black and white photo of the glass-sided model wave tank, slowing a cross-section model of the breakwater. Which is constructed various sized stones. There is a model of the parapet wall on top. 4-91G- various numbers painted on tank wall. Sign with '4-91, Before wave action' between model and tank wall.