WWII USSR Submarine Sht-204

WWII USSR Submarine Sht-204 is an advanced wreck dive in Bulgaria's Black Sea waters. This Soviet Shchuka-class submarine was lost during World War II and discovered on the Black Sea floor. The wreck offers a somber yet fascinating dive for experienced technical divers, with the preserved hull sections providing insight into wartime submarine design. Proper technical diving certification and equipment are required for this challenging deep dive.