At first look it seems very likely these boxes are debris from Japan. But there is the typical "wait there's more" anomalous elements that ties these boxes in with UFOs, at least according to the this article. Referring to the photo accompanying the article of one of these boxes at Bray's Point, Oregon, it's noted the boxes have been seen before:
The photograph that accompanies this report – taken during the afternoon of Feb. 8 near Bray’s Point -- of yet another strange metal box stuck in the surf up is one of a possible group of a dozen or more that have been sited up and down West Coast beaches. Meanwhile, the British government also photographed similar huge metal boxes on beaches in Sri Lanka in the late 1990’s and in early 2004 and 2005. The discovery of the boxes is detailed in updated previously classified reports from the British government that document sightings of unidentified flying objects by both the military and the general public dating back to the 1950s.According to the coastal UFO researchers, there's been an increase in UFO sightings recently, coinciding with the boxes.
The boxes are heavy -- "not movable" -- ring, or hum, glow, and coincide with UFO sightings.
While I have no idea what these are of course, it seems irresponsible to go up to these boxes and touch them or attempt to move them.
UFO Sightings at Stonefield Beach
Stonefield Beach, Stormy Day and UFO?