I believe the answer is: They worried about having to take part in future wars.
At that time, the united states senates prefer to take the position as a neutral force that want to avoid any intervention toward other countries' problems. This stand is taken away the moment the Japanese army decided to initiate an attack to the pearl harbour.
The two primary incentives sailors were offered for joining the navy were relatively high and stable pay, and pension plans if they stayed in long enough. These were especially appealing during times of economic depression.
Answer:
the answer is location be the sea
hope this helps
have a nice day :)
