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Offline ozzylrTopic starter
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« on: September 19, 2010, 06:29:25 pm »
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I saw a video of some divers searching a spanish shipwreck with handheld probes.  They would stick them into the sand and apparently by probing deep into the sand they could find treasure easier or at least deeper than something like an Excalibur II.  Anyone have any recommendations on what would work best in saltwater and beach sand.  My thought is that most heavy metal drops through the sand rapidly so in a short time it has moved below the depth of most detectors.  Perhaps with a deep probe one could find heavy metals that are below the depth of most detectors.  Any suggestions for working off beaches to a water depth of 5'?  Maybe I am wasting my time with this idea but I am sure there is a lot of jewelry that has been lost that comes to rest below the normal range of good quality detectors.

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Offline Paul A
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« Reply #1 on: September 20, 2010, 01:49:16 am »
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Hi,
Best guess would be to use a good waterproofed P.I. detector with a "probe" attachment.
Probes for P.I. detectors are very simple to make.
Theres no reason why you couldn't make the probe housing any length you like.
Maybe 4 feet or so, so you could use it a bit like "spear fishing" and push it in to the soft stuff.
If you already have a P.I. detector you could likely build a waterproofed probe for less than 20 dollars.


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Offline hardluck
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« Reply #2 on: September 20, 2010, 02:04:27 am »
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Hello Ozzylr

It all depends on the location and type of beach, wind, waves and currents, type of sand fine or course sand, composition such as sand and mud, tidal range and even the time of year. All these are factors to consider.

It all depends on what type of beach your intending to work. For example a beach is different in a tidal estuary from a beach that is pounded from an open seas or a beach protected by an outer reef system.

Hardluck

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Offline goldnboy
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« Reply #3 on: September 20, 2010, 04:19:14 am »
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Hi all, ozzylr you have made an interesting observation and point about the range of  an average detector
 Add the fact that heavy metals are likely to sink!! Paul has made a good suggestion regarding probes and PI detectors. Another option could be to have a massive search coil to get extra depth.
  a more easy way could be just to wait for after a storm and hope the sand has cleared away and the treasure is in a glory hole waiting for you Smiley , but then again if you had a probe you could always double check every now and again. Check out some other postings on Shallow water detecting  for tips and advice Good luck  Cool

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Offline xavier
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« Reply #4 on: September 20, 2010, 05:04:38 am »
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A larger coil will not solve the problem unless you are looking for large objects a probe will detect small objects but will not do for large areas but if you have an area well defined then a probe will be of great help especially where there are crevices and small holes.

Regards Xavier 

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So many questions so little time
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