Complex sentence: The shot fell between the "Monarca" and the "Rayo", the latter, conceiving probably that it was intended for her, hauled down her colours, and was taken by HMS "Donegal", who anchored alongside and took off the prisoners.
Split into simpler sentences: The shot fell between the "Monarca" and the "Rayo". The latter, conceiving that it was probably intended for her, hauled down her colours, and was taken by HMS "Donegal", who anchored alongside and took off the prisoners.