red beacon on the tip of tetrapod breakwater in the bay of okpo in okpo, gyeongsangnam-do,south korea

architecture bay beacon block boat break breakwater building coast coastal concrete dock dockyard dsme erosion famous geoje gyeongsangnam harbor harbour historical industrial industry island korea korean large lighthouse marine maritime nautical navy ocean okpo port red sea ship shipbuilding shore south stacked structure tetrapod transport transportation travel vessel water wharf