The calculated distance (air line) between Shau Kei Wan and Kwai Chung is approximately 8 miles respectively 14 kilometers.
By car or train, the actual journey to Kwai Chung is certainly longer, as only the direct route (as the crow flies) between Shau Kei Wan and Kwai Chung has been calculated here.
Air line (approximately)
14 kilometers
7 nautical miles