 In addition the space inside the cargo hold that cannot be reached by grabs during discharging, the so-called "dead spots", is minimized.With a deadweight tonnage of about 400,000 tons, a fully laden "Valemax" vessel is carrying as much iron ore as around 11,150 trucks, enough to produce steel for three Golden Gate bridges.The first 35 "Valemax" ships were said to be capable of carrying about 15% of the annual iron ore exports from Brazil to all destinations if each ship does four round trips per year.