The photo is for sale on eBay: http://www.ebay.com/itm/like/c-1890s-PHOTO-CHINA-HONG-KONG-BUTTERFIELD-…
The seller dates it to the 1890s, which seems right as there isn't any sign of the dockyards.
Source: This image came from Flickr, see https://flickr.com/photo.gne?id=16202710446
Date picture taken
1890s
Gallery