Northport/Supplied The 261m Constantinos P, which berthed on Sunday, is Northport's largest visitor, laden with Christmas cargo. However, a number of the trucks entering and leaving Northport on Friday morning were capable of carrying two or three containers, suggesting National Road Carriers’ estimates of truck movements were high. The port was busy, not only with container trucks but also with logging trucks supplying the port's main staple. Denise Piper/Stuff A large container truck, capable of carrying several containers, arrives at Northport on Friday morning. News of the extra truck trips has made some Whangārei residents postpone trips to Auckland due to fears of congestion.