Quảng Ninh Museum has received the chart Quảng Ninh with the Unnumbered Ships from the association preserving the maritime Hồ Chí Minh route's history, Văn Hóa reports. It maps places used for preparation, shelter, repairs and support around Hạ Long, Quang Hanh and other areas. The locations were reconstructed from witnesses' memories and historical materials. The museum plans to preserve and study the chart and explore digital presentation, adding material for research and public interpretation of the wartime sea route.