Complex sentence: While steaming through the Kattegat and Skagerrak, the British submarine spotted the convoy and fired a spread of torpedoes; the Germans successfully evaded the torpedoes, however, and proceeded with the mission.
Split into simpler sentences: While steaming through the Kattegat and Skagerrak, the British submarine spotted the convoy and fired a spread of torpedoes. The Germans successfully evaded the torpedoes, however, and proceeded with the mission.