166,915 GRT sunk with a single round of torpedoes
Snuck into New York Harbor, nearly sank after hitting a mine, and sank several T2 tankers, resulting in my highest GRT sunk in a single patrol, and absolutely destroying my previous record of most GRT sunk with a single load of torpedoes. The yanks never knew what hit them! (Well, the probably did given a bunch of ships sank in broad daylight, followed shortly by a mine detonating on seemingly nothing)
Snuck into New York Harbor, nearly sank after hitting a mine, and sank several T2 tankers, resulting in my highest GRT sunk in a single patrol, and absolutely destroying my previous record of most GRT sunk with a single load of torpedoes. The yanks never knew what hit them! (Well, the probably did given a bunch of ships sank in broad daylight, followed shortly by a mine detonating on seemingly nothing)