The Lead and sounding Machine The lead, as you know, is used to ascertain the depth of the water and, when necessary, the character of the bottom.
"Lectures in Navigation"
Ernest Gallaudet Draper
See that the patent log and sounding machine are in good order.
"Lectures in Navigation"
Ernest Gallaudet Draper
See that log lines, sounding machine, etc.
"Lectures in Navigation"
Ernest Gallaudet Draper