Complex sentence: EML "Admiral Cowan" (M313) is a "Sandown"-class minehunter, the former HMS "Sandown" lead ship of her class of the Royal Navy, now of the Estonian Navy.
Split into simpler sentences: EML "Admiral Cowan" (M313) is a "Sandown"-class minehunter. Formerly HMS "Sandown", lead ship of her class of the Royal Navy, now of the Estonian Navy.