Air India 182 was restricted to 35,200 feet and 290 knots as it was ferrying an engine. The bomb detonated while the plane was at 31,000 feet and 296 knots. The plot of the wreckage on the sea floor revealed that it was mostly scattered along a NW-SE axis over a distance of 6.5 NM, or generally between 12.49W and 12.41W. The westernmost definitively identified portion of the wreckage was found at nearly 12.50W. Lighter and smaller pieces constituted most of the wreckage on the easternmost portion of the axis.
Plot can be seen here on the last page of the pdf.
http://www.publicsafety.gc.ca/prg/ns.../CASBai-en.pdf
All the bodies were recovered within five days, which may have been more a function of the plane being tracked by radar, and relative proximity to the Irish coast. The report does not indicate there was significant dispersal of floating wreckage by current or wind. Between 3 and 5 percent of the plane was recovered as floating wreckage.