Together with Chief Engineer Thomas Lloyd , he designed HMS Warrior , the world 's first armour - plated iron - hulled warship .
Isaac Watts ( 1797 -- 1876 ) was an early British naval architect .
Together with Chief Engineer Thomas Lloyd , Isaac Watts designed HMS Warrior , the world 's first armour - plated iron - hulled warship .
Isaac Watts ( 1797 -- 1876 ) was an early British naval architect .