This picture is in the public domain in its country of origin and all other countries where the copyright term is the author’s life plus 70 years or less. It first appeared in Popular Science Monthly Volume 12 between 1877 and 1878.

This is also in the public domain in the United States because its first publication was prior to January, 1923. It was originally published in the 1911 Encyclopedia Britannica as figure 6 in the article on rigging.

This image is in the public domain in the United States and other countries where the copyright is the life of the author plus 70 years or less. It originates from Richard Burton’s 1884 book called, “The Book of the Sword”.

This picture is from Pixabay, from Meatle.

The map is by my hand.