Detailed blue back chart of the South China Sea and the approches to Hong Kong and the Pearl River.
Inset maps include a large map of the Approaches to Hong Kong, Nha Trang & Bin Khang Bays, Cam Ranh Bay and Harbour, Port Xuan-Dai, Touron Bay, Cape Boung - Quioua, Yu-hin-Kan and Gaalong Bay (Hainan Island). Several coastal profiles views are also inlcuded. The map shows two proposed routes to and from Hong Kong during Fair Monsoons.
The map includes thousands of soundings and minute navigationaly details, place names, lighthouse, sailing directions, etc. One of the most detailed commercial sea charts of the period.