Keywords: FMIB 49912 Inner surface of 1" redwood sheathing, submerged 20 months in Pearl Harbor Martesia striata coming through from outside Looking.jpeg check categories 17 September 2015 3 Inner surface of 1 redwood sheathing submerged 20 months in Pearl Harbor Martesia striata coming through from outside Looking through empty burrows note small openings through which borers entered At upper left is seen a strip of tarred ship felt whicch they have penetrated Subject Marine borers Piling Civil engineering Weathering Tag Coasts 1923 Cite book Report on the San Francisco Bay Marine Piling Survey San Francisco Bay Marine Piling Committee San Francisco CA San Francisco Bay Marine Piling Committee 1923 3rd Plate 4 Fig 1 San Francisco Bay Marine Piling Committee PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 49912 Images from the Freshwater and Marine Image Bank to check San Francisco Bay Marine Piling Committee Piles structural Weathering |