It can also be observed that total value added of the FVG port system, which is equal to 330 million euros, derives mainly from transport-related activities but almost one-third of it is generated by non-transport-related activities. More in detail, the value added generated by transport activities can be subdivided as follows: maritime and customs agents: 3.2 per cent; freight forwarders: 11.8 per cent; shipping companies: 5.6 per cent; terminal operators: 11.2 per cent; public agencies: 22.1 per cent; road transport and logistics companies: 9.6 per cent; railway companies: 5.1 per cent; port services (pilotage, towing, mooring and hauling services): 8.6 per cent; general services: 9.5 per cent; services to the ship including bunkering: 1.5 per cent; labour services (labour pools, warehouse workers): 9.6 per cent; services to the goods (general and chemical control): 0.6 per cent; manufacturing: 0.7 per cent; construction: 0.0 per cent; commerce: 0.7 per cent; services: 0.1 per cent. The large percentage generated by the public agencies deserves special mention.