You should be able to pull some depth charts from the local library without too much difficulty. If not, the local fishermen could be worth contacting -- they're also likely to be the people that will have the equipment needed for salvage.

[Pepper seems pleased at getting practical answers, even if her expression blanks for a moment at 'astromech' before being supplied with belated memories of Commander Skywalker's robot. She makes a note on a scratchpad, although the angle of the screen obscures what she's writing from clear view.]

I will warn that there are a few locals who are suspicious of outsiders -- there have been a few incidents over the past year, even aside from the whole notion of unkillable visitors from other realities... and I probably should check just how much you've been brought up to speed before dropping sentences like that.