Artifact

[jfrano]

Not so much looking for propulsion vehicle, although many use SPV for this purpose. Looking for the smallest device I could use to move sand in a controlled manner. Thanks

 

[Randy g]

Your hand or a ping pong paddle.

 

[Rich Keller]

You could make a small air lift out of PVC pipe, a 1/4 turn valve and some tubing. This is something that is usually getting the air from the surface but it could be done on scuba with a set of doubles, one tank for you and the other to run the air lift.

 

[Dr. Lecter]

Having tried this with a real DPV, I can say that even one with infinite speed variation can be difficult to set low enough to effectively "dig" without forcing the diver away from the bottom. Something like a bladefish would probably be ideal.

 

[diversteve]

since you posted in DPV's, this one is good to 100'. Adjustable buoyancy so maybe you could make it fairly negative.

Sea Doo GTI Seascooter - Powered Scooters by Discount Marine Supplies
I think there's some even cheaper clones on eBay.

Or the cheapest Bladefish^ which is only about $270 also.

Computer City: Churchill by Bladefish Squid 3000 Underwater Dive Scooter Propulsion System (Blue) - Dive Further for Longer!

I wonder if the Bladefish might have too wide a stream to be as effective. You could even add some sort of funnel shaped diffuser to the Sea_Doo.

 

[Mr.X]

I've dug with big scooters, ping pong paddles and air nozzles attached to the tank. As mentioned - the big scooters move a lot of sand + debris. When I cleared areas here in the NE I'd have to come back to the site because it was so turbid I couldn't work the site unless there was some good movement of water. The paddle was great because I was able to clear away stuff in a controlled manner, but tedious. The idea of using a dinky scooter could be appealing???

It all depends on what you're doing + where you're doing it.