Quang Ninh, Aug. 7 -- About 80% of tour boats operating in northern Quang Ninh province's Ha Long Bay had been equipped with AIS (Automatic Identification System) devices as of August 6, with full installation expected by August 15. AIS is an automatic tracking system that allows vessels to exchange information such as identity, location, direction, speed, and other data with other ships and onshore stations. According to national technical regulations, AIS installation is mandatory for boats carrying more than 50 passengers. However, operators of smaller vessels (under 50 seats) in Ha Long Bay have voluntarily committed to completing installation by the deadline to enhance operational safety. On August 2, the provincial Department of Con...