BuddyPress.org

Hi @qurgh,

use bp_loggedin_user_domain function and wp_nav_menu_items filter to add the item to an existing menu, like this: bp_loggedin_user_domain( 'kag/ship/' )

See here for a working example:
https://buddypress.org/support/topic/url-for-menu-to-logged-in-users-profile-page/

WordPress reference:

wp_nav_menu_items

https://codex.wordpress.org/Navigation_Menus

BuddyPress reference

bp_loggedin_user_domain