"Not lost, but suppressed," Magnus responds, giving Stilgar an arch glance at the last word. "Magics to conjure things from beyond are expressly forbidden. This is similar, but as you say, it is meant to take people and things from place to place in an instant."
"Only things in the circle can be transported, likely to a linked circle at the destination point. I'm thinking that rock came up out of the sea through the bottom of the ship. Whoever this is likely died before the circle could be activated. Powerful magic. Whoever owned this ship had power and influence."
The crates appear to contain trade goods--linens, furs, clay, nails--and the barrels have mostly sprung and leaked their contents, though there are three intact barrels of beer and a cask of brandy. One box holds candles, and another an array of small, clay jars that hold spices, some unknown to even Jon.