We have started to build the cache container.
This is 4” ABS with an end cap on one side and a threaded end cap on the other. The tube is approx. 12” long with about 5”s of concrete in the caped end. The threaded cap is tethered to the main tube with 60lb fishing line and a swivel to allow the cap to rotate freely. There is also a shackle ring mounted to the end cap which will be used for tethering to a concrete block. Once all the concrete is dried I’ll get some pictures posted.
The cache will not be water tight and accessible only underwater. This is for the safety of the divers so they don’t have a bounce profile and end up getting bent. The depth should be between 35 & 45ft.
We plan on using a diving float and lift bag to get the cache down to its new home. We estimate the concrete block we are making will weigh between 50-60lbs with an eyelet on the end of the block.
If anyone is willing to donate some gold coins I’ll make sure that they get placed in the cache.
So far some of the ideas for the contents of the cache are the following:
Gold Coins
Matchsafes
Gold jewelry
Plastic gift cards
Plastic Calling cards
Travel Bugs (not sure how corrosive they are)
GeoCoins (not sure how corrosive they are)
Diving related gear (Dive lights, glow sticks, air cards, oring kits, etc)
We are still working out the logistics for the various waypoints to the cache and the heading’s required for underwater navigation using only a compass. For those divers out there do you trust your kick cycle estimates in order to determine distance underwater or do you prefer the line / grid approach?