CoW can ask for your password before showing hidden content
After you set a password, Captain and Fleet users can choose whether CoW asks for it each time they try to view hidden Caves, Chests, or bookmarks.
Choose how long each type of content stays unlocked
You can set a separate password-session length for hidden Caves, hidden Chests, and hidden bookmarks. Choose how many minutes CoW should keep each type unlocked before it asks you to enter your password again.