A neat and extensive blog by some folks that will jump in and do anything. They have home built submarines, ROVs (remote operated vehicles – underwater), metal working, etc. Check out the build log of the origami boat for details.
If your interests are in exploration, discovery and adventure then what better than a boat to take you where you want to go. SV Seeker is our 74 foot steel origami hull, junk rigged, cargo, motor sailer. Once completed she will be a part time research/charter vessel and full time home on the water.