need help P-3c identify smuggling ship? how?

[ben801]

I try to take the 4th mission " sea of Okhotsk" with P-3c ( to identify smuggling shipment with P-3c ? )
after several try, I gave up, because I don't know what should I do to meet the request to achieve the mission.

I took infrared photos of many ships( almost every ship)
and both group.

please help
what should I do to meet the mission request?
how to identify a ship is smuggling ship or not smuggling ship?
does that smuggling ship have a banner said" I'm smuggling ship"

thanks alot
please teach me how