The rig at that location does not match the name in his letter.
https://www.marinetraffic.com/en/ais/details/ships/8767771/vessel:TAM_DAO_01
Thats a vietnamese rig. His name doesn’t sound Vietnamese.
That may explain why he provided his New Zealand passport number at the end of the letter.
Probably a contractor. I used to fly across the Pacific, planes always had interesting people to talk to who worked for foreign companies.
You must be trolling. You really think oil rigs don’t house skilled workers from all over the globe?
Vietsovpetro, headquartered in Vung Tau, Vietnam, is a joint Russian-Vietnamese enterprise for oil and gas exploration.
Naw, he’s not Vietnamese. He’s western - Australian or New Zealand or something. An engineer, I think.