Map: http://www.tomnod.com/nod/challenge/malaysiaairsar2014/map/128148
Location: (5.652367, 98.843894) Gmaps (11km west of Pulau Perak)
Time: 12th March, 3:48AM (timezone?) [~5 days after last contact with MH370]
Notes:
Too large to be a shipping container.
Nearest known shipwreck is 12km NE.