A vessel reportedly operating as a "floating armoury" in the Gulf of Oman has been seized by Iranian military personnel, according to the maritime risk management company Vanguard. The ship is now "bound for Iranian territorial waters", the UK's Maritime Trade Operations (UKMTO) organisation said. BBC Verify has checked ship-tracking data from MarineTraffic which shows the vessel - identified by Vanguard as the Honduras-flagged Hui Chuan.