Complex sentence: One was directly amidships and the second another 90 feet forward, thus placing them far enough from the aft arrester wires that both could be used for striking down aircraft into the hangar immediately after a landing.
Split into simpler sentences: One was directly amidships and the second another 90 feet forward. They were far enough from the aft arrester wires that both could be used for striking down aircraft into the hangar immediately after a landing.