In the context of new geopolitical tensions due to the current armed conflicts. safety in terms of navigation has been threatened due to the large number of sea mines placed. in particular. within the sea conflict areas. https://www.roneverhart.com/Traditional-Karate-Do-Okinawa-Goju-Ryu-Book-1-The-Fundamental-Techniques-by-Morio-Higaonna-Preowned/