Originally Posted by me
I am puzzled by the northern excursion on 5/22. Based on the times of the preceding and trailing positions at the south westerly search area, they spent less than 20hours at the northern site, possibly much less. One of those positions is on the eastern edge of search zone 2 of BEA's 5/4 extended search areas.
Ahhh. Light dawns on Marblehead.
The latest positions show Seabed worker at search zone 2. I'm now sure the run up there on 5/22 was to drop and survey transponders, thus saving time when returning to search that area on 5/24.