We do - not nearly often enough - marine hydrographic survey work.
in the feild:
-digital survey transit + fancy 20km2mm laser distance meter + surveyor = accurate position of boat
-900mhz/128kbaud spread spectrum radio modems, send position to boat
-computer on boat Husky 50mhz 486dx / 16mb ram + 64mb flash + dos 3.2 + custom sounding / data collection software
-digital depth sounder hooked to computer
-small inflatable boat and motor, I drive back and forth and back and forth... many many times.
then back to the office (home):
-run it all through custom pre-processing software
-run it into cad/mapping software
-out pops the weasle -oops- bottom map! contours, spot depths, profiles, etc.
I tech the hardware, do the programming (PowerBasic 3.5 for dos), do the data processing & most of the map drafting, run the boat, and I'm the rod-man. Just a few hats
We do shallow water (<100m) sounding for harbour dredging, deep sea shipping ports (do they run aground?), submarine electric/telephone cables, pipes and outfalls. Fun work what little we get of it, and pays well.
Seems like we are both dos guys. Thanks for the links.