The global impact of submarines

Submarines play a crucial role in global military strategies and constitute a growing and profitable component of naval fleets worldwide, thereby influencing the capacities of navies. #documentary #submarines #global ---- This channel offers you full episodes of high quality documentaries. Enjoy and don't forget to subscribe :) ---- Other channels you might be interested in: criminals and crimefighters: https://www.youtube.com/channel/UCYuXyzwA_w4-c1FJrqOnR0A space and science: https://www.youtube.com/channel/UC1-7mA0mKsCTyCMG4JNO3EQ