In honor of sea legs, however, I bring you this beautiful 1846 photograph of knitted socks from the other side of the world:
I believe the family is from Australia (it comes from an Australian genealogy site), and I don't believe it's a post mortem photo.
The stockings would have been made of white cotton and worked in the round on very small (say 000) needles. Patterns for such socks appear relatively often in magazines and needlework books of the period. The Wisconsin Historical Society also has some examples in their collection.