submarine, Silent Hunter series, underwater, ocean, periscope view, detailed control panel, historical WWII vessels, realistic torpedo launch, dynamic weather, deep sea, naval combat, strategy, tactical simulation, crew management, sonar system, anti-aircraft guns, enemy ships, convoy attacks, stealth gameplay, first-person perspective, 3D graphics, ambient underwater lighting, sunken ships, coral reefs, marine life, icebergs, arctic environment, full moon, starry night sky, bioluminescence, high-resolution textures, advanced physics model.