CONF iture and Squawk_ident
The position reports come from LloydsMIU's Lloyds Agency network and AIS stations. The call at Praia would have been reported by Lloyds Agents; there's no AIS receiver there. There is an AIS receiver at Dakar. Before you ask, I don't believe there's an AIS station at Fernando de Noronha.
CONF, no doubt there's a difference. "search station" was my own phrase, not AIS's.