Complex sentence: The carronade was much shorter, and weighed between a third to a quarter of the equivalent long gun; for example, a 32 pounder carronade weighed less than a ton, compared with a 32 pounder long gun, which weighed over 3 tons.
Split into simpler sentences: The carronade was much shorter, and weighed between a third to a quarter of the equivalent long gun. For example, a 32-pounder carronade weighed less than a ton, compared to a 32-pounder long gun, which weighed over 3 tons.