Complex sentence: Warhead rev.7, which is for twin-engine bomber, weighs 526kg (1160 lb) with high explosive 420kg (925.9 lb); it is so designed to pierce the reinforced tough armor plates latest USS warships had developed during World War 2.
Split into simpler sentences: Warhead rev.7, which is for twin-engine bomber, weighs 526kg (1160 lb) with high explosive 420kg (925.9 lb). It was so designed to pierce the reinforced tough armor plates latest USS warships developed during World War 2.