Home/American Shipper/Maersk adds ship to three loops American Shipper Maersk adds ship to three loops FreightWaves Staff · Monday, June 04, 2012 Two of the loops, its ECUBEX and AC2 services, are connected to the line’s mega-regional hub in Balboa. The third is Maersk’s joint average 4,472-TEU weekly SAECS loop between north Europe and South Africa.