Experienced Angola winger Gilberto has taken a look at the Palancas Negras' 2013 Africa Cup of Nations chances and concluded that surviving their group will require focus and a good opening result.

Angola tackle a Morocco side the left-footed star describes as compact and dangerous in their opening game on January 19.

"The first game will be crucial and will be reflected in our performances in the competiton, so we must be focused," the AEL Limassol of Cyprus player told Angolan news agency Angop.

The 30-year-old also warned about giant-killing debutants Cape Verde saying they were a "good team" and may well survive the group.

"They may surprise the group and perhaps beyond." Gilberto said of the Blue Sharks who upset Cameroon in the final round of qualifying for the tournament.

Of hosts South Africa, Gilberto believes they could get extra support from CAF to ensure they reach the next round and sustain local interest in the event.

"The organisers normally protect the home team to keep the fans in the stadium, so it's a game where we have to be very careful."

The former Al Ahli star of the side is currently nursing an injury but is expected to be fit for the tournament.