A high frequency (DIDSON) sonar image of the PRINCESS KATHLEEN. Note that the image is inverted. Image courtesy of Alaskaís Submerged Heritage Exploration, NOAA-OE.
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A high frequency (DIDSON) sonar image of the PRINCESS KATHLEEN. Note that the image is inverted. Image courtesy of Alaskaís Submerged Heritage Exploration, NOAA-OE.
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