sand blowing

[amarda2]

hi everyone, not been on this site for a long while, havebeen working on a wreck in wales for the last six summers using a28 foot army assualt boat with twin 212hp jet drive engines. we use afour point anchor system and aim the jets down to remove the sand overburden, about 10 feet, then run 2 six inch dredges off one engine, these spill out over 2 keene sluice boxes to trap any heavies. we now want to check a few new sites without the boat. the new sites are shllow water with about 2feet of sand over gullies close to shore, has anyone any ideas on a small system for sand blowing ( not dredging ) that we could operate from the shore or a 12 foot inflatable. cheers charlie.

 

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[Darren in NC]

outboard blower. Here's a design template for you from Rgecy...

http://forum.treasurenet.com/index.php/topic,48219.0.html

The pic is from scubasalvor's boat...

 

[amarda2]

thanks darren, i was thinking of something hand held, i had not thought of using a mailbox on a small dingy outboard, has anyone tried this. cheers charlie.

 

[amarda2]

thanks for that mad4 it looks just right, but now darren has got me thinking of a mailbox on a small dingy, does anyone have a link to dpv.cheers charlie.

 

[Darren in NC]

DPV is not a brand name. It simply means "diver propulsion vehicle." Google that and you'll find numerous companies that make them.

 

[drhans]

hi there, checkout the little blower and jet venturi dredge i built, just use a lot 5200 on all the sealings and u will be good to go, power from a boat with a 12 V battery, the battery probably lasts longer then ur arms, and it makes a 1m deep and 3 m wide hole in about 5 min.

pictures and stuff here

http://www.project-boats.com/phpBB3/viewforum.php?f=13&sid=d692bb0e2029feeafe87d33c472b9448

 

[army82]

You could use a airlift. Just hook a air hose to a pvc pipe when the air goes in it causes a venturie(sucks the sand up) it works good for test holes. Im sure someone on the site could explain it better and might even have the designs if not send me a PM

 

[divewrecks]

You could use a airlift. Just hook a air hose to a pvc pipe when the air goes in it causes a venturie(sucks the sand up) it works good for test holes. Im sure someone on the site could explain it better and might even have the designs if not send me a PM

For what? The original question posted indicated shallow water and a dive from the shore or a small inflatable. Airlifts won't work in the shallows and a relatively large air compressor is required.

Just get a decent used DPV and you should be able to sell it after your work without much or any loss if you don't modify it or wear it out.

Stan

 

[scubatreasure]

I havent tryed one of these yet but iam considering it...for $170.00 on ebay you cant go wrong ...and thats for a new one... underwater scooter

http://cgi.ebay.com/300-350-WATT-SE...2:1205|66:2|65:12|39:1|240:1318|301:0|293:1%7

good luck..........................................................................................Limo Bob

 

[divewrecks]

I havent tryed one of these yet but iam considering it...for $170.00 on ebay you cant go wrong ...and thats for a new one... underwater scooter

If you get one I would apreciate it if you post a review on your experiences with it.

TIA, Stan

 

[SEAHUNTER]

We have used the scooters rather extensively, the more expensive they are the longer they last. We have gone through half a dozen of them of various makes. The most important thing before using them is to strap several dive weights to the outer cage to counter the propulsion effect, so you are not fighting it. Plastic zip ties work excellent for this.
Seahunter

 

[FISHEYE]

Amarda,


You already have the best tool for blowing sand.Use the jet boat.
This jet boat was heading south of hwy 95.this is the best for blowing sand in shallow water

 

[scubatreasure]

I havent tryed one of these yet but iam considering it...for $170.00 on ebay you cant go wrong ...and thats for a new one... underwater scooter

If you get one I would apreciate it if you post a review on your experiences with it.

TIA, Stan

will do Stan, this one says it has the only all metal gear unit on the market and 9 bearings per shaft end where most others have 3 bearings? you never know until you try them out ...
Limo Bob

 

[aquanut]

Borrow a Jet Ski from someone you don't like!
Aquanut

 

[IndianRiverSonrise]

I've seen a Jet Ski used to remove sand to bedrock in shallow water.

 

[signumops]

Yes, they do work! But the anchoring routine can be a bit of a hassle.