https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14301002![Caulking bottom of ship with oakum and cotton to make water tight. by Underwood and Underwood](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL2dldHR5MTA3OWhhLWltYWdlLmpwZw.jpg)
![Caulking bottom of ship with oakum and cotton to make water tight. by Underwood and Underwood](https://images.rawpixel.com/image_social_landscape/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDI0LTAyL2xyL2dldHR5MTA3OWhhLWltYWdlLmpwZw.jpg)
Caulking bottom of ship with oakum and cotton to make water tight. by Underwood and Underwood
Caulking bottom of ship with oakum and cotton to make water tight. by Underwood and Underwood
Original public domain image from Getty Museum
Public DomainFree CC0 image for Personal and Business use