ADD_TO_GRAY_WOLVES_12306_005[1] Published on September 28, 2013 in U BOAT SANCTUARY – INSIDE THE INDESTRUCTIBLE U BOAT BASES IN BRITTANYFull resolution (2048 × 1536) ← Previous Next → U-552 entering ‘box’ 12B at St. Nazaire with 4 victory flags flying bases had full ‘fangrost’ defenses, others didn’t.