The Samoa Ports Authority says the trend by companies to build bigger ships poses port problems for Pacific Islands.
Its General Manager Toleafoa Elon Betham says bigger ports are too costly to build.
Toleafoa said the vision for bigger ships is for them to carry goods around the world in one trip.
He said instead of expanding port facilities to cope with them, perhaps a ship can anchor at a big wharf like in Auckland New Zealand and send out smaller "feeder ships" to Pacific Islands.
Working out how to cope with that trend is one of the topics being discussed at a Pacific Ports conference now underway in Apia.