Complex sentence: Some reaction ferries operate using an overhead cable suspended from towers anchored on either bank of the river, whilst others use a floating cable attached to a single anchorage that may be on one bank or mid-channel.
Split into simpler sentences: Some reaction ferries operate using an overhead cable suspended from towers anchored on either bank of the river. Others use a floating cable attached to a single anchorage that may be on one bank or mid-channel.