The Many-Headed Hydra by Peter Linebaugh and Marcus Rediker Ch. 7 as a reference

Why was gender such a crucial issue in the Navy? 

Were African Americans better off at sea than on land? 

What was the influence of class on the American Navy?

The chapter "The Floating World" in "The Many-Headed Hydra" discusses the gender dynamics and the experiences of different racial and class groups in the American Navy during the 18th century. However, it does not explicitly address each of the questions outlined.

Regarding the question on the significance of gender in the Navy, the chapter does touch upon the existence of gender hierarchies on ships. It highlights the dominating male presence in the Navy and how masculinity was a crucial aspect of naval discipline and authority. However, it does not delve deeply into why gender was such a crucial issue.

Concerning the question of whether African Americans were better off at sea than on land, the chapter emphasizes that the Navy provided an opportunity for African Americans, both enslaved and free, to escape the oppressive conditions they faced on land. The authors discuss how the maritime world allowed black sailors to experience a certain amount of freedom and autonomy, although they also faced racial prejudice and discrimination on board.

The role of class in the American Navy is another aspect that the chapter touches upon. It explains how class distinctions existed among sailors, ranging from the well-paid and skilled officers to the lower-ranking and poorly paid common sailors. Class affected the treatment and responsibilities of individuals within the Navy hierarchy.

In summary, while the chapter provides some insights into the gender dynamics, experiences of African Americans, and class distinctions in the American Navy, it does not explicitly address the questions presented.