The ferry terminal outside Sitka is near the freighter dock. As with the other Southeast Alaska communities we'd visited, there were piles of containers nearby. These testify to the fact that every thing has to be delivered by freighter or barge (or sometimes air.)
At Sitka there were no yellow (hazardous material) containers. More than 100 million containers are moved worldwide, annually, on container ships and barges. Each carries an average of 4,500 containers. Every year, more than 10,000 containers fall overboard and dump their contents. Some don't sink and remain afloat as major hazards to other boats.