Complex sentence: By 1900 John Swire & Company were major shareholders and Henry Scott was a director of Swire Scotts specified and oversaw construction of Swire's Taikoo Dockyard in Hong Kong.
Split into simpler sentences: By 1900 John Swire & Company were major shareholders and Henry Scott was a director of Swire Scotts. He specified and oversaw construction of Swire's Taikoo Dockyard in Hong Kong.