Underwater metal detecting is something that has been getting about as popular as metal detecting on land.
They are used for games and fun along the shore by families and other adventurous people.
Divers in the deep sea can use underwater metal detectors to search for capsized ships, lost treasure, and relics.
Buying your first underwater metal detector can be an uphill task, especially if you don’t understand what you are looking for.
If you are interested in underwater metal detecting, you may be asking yourself, “What is the best underwater metal detector?”, you should ask yourself first:
- Where will you be looking?
- How deep will you be going?
- Fresh or saltwater?
- Is it something to get to snorkeling, or will you need scuba gear?
I’m going to help answer these questions for you and recommend a couple of detectors along the way.
Top 5 Underwater Metal Detector
Sand Shark Underwater Metal Detector is a metal detector that’s innovatively designed for every submerged metal detector. Each metal detector user can get an excellent entertaining encounter with this specific type of metal detector.
There’s a huge chance of gathering precious materials and metals, which may be an amazing group or for other functions while seeing the scenario underwater.
Sand Shark Underwater Metal Detector functions both in saltwater and fresh with its maximum depth of 132 ft. It enables the user to disregard small parts of metals and permits search for the bigger one. This has had a discrimination ability to dismiss garbage while searching for precious materials underwater.
The Sand Shark Underwater Metal Detector will let you experience a great time diving and, at the same time, looking for treasures, so choose the metal detector that is right for you.
2. Garrett Sea Hunter Mark II Underwater Metal Detector with 2 Search Coils – best underwater metal detector for gold
Discover the world of underwater treasure hunting. Discover more rings and less trash together with the brand new Garrett Sea Hunter Mark II underwater metal detector.
The Garrett Mark II boasts a unique, groundbreaking technology in the form of a patented Discrete Trash Elimination mode that discriminates, unlike any conventional pulse induction metal detector.
Now, thanks to the microprocessor-driven Garrett Sea Hunter Mark II, you can exclude trash items from detection with little or no effect on objectives with a similar conductivity.
This sophisticated sensor boasts an enhanced discrimination manner, along with a regular one, enabling it to distinguish between objectives exactly.
Only switch on the Garrett Sea Hunter II’s Discrete Trash Elimination mode, set the dial to remove pull tabs from detection, and you will still get signals from most thin gold rings. This original search style helps you zero in on precious treasure without digging up a lot of rubbish.
Overall, the Garrett Sea Hunter Mark II is ideal for hunting on the shore, diving, or snorkeling. Submerged headphones included. It is also perfect for fresh or saltwater.
This is yet another lightweight and controlled metal detector for those yearning for something functional yet not hefty on the pocket, or tricky to function and sturdy metal detector that has a simple outlay.
Beat induction, the ability to discriminate small metal bits, is included by a number of the attributes which come with this particular metal detector. It includes submersible cans and has great discrimination features.
Underwater metal detectors Buying Guide
Underwater metal detectors are used by treasure hunters, sport divers, archaeologists, military, and law enforcement, all for a different purposes.
There are large underwater construction companies that use them to place cable and pipelines.
The most common feature of underwater metal detectors is the ground balance, depth, detection mode, alerts, and sensitivity.
Some detectors have adjustable depth searches. The higher-end detectors will give you a distinctive alert, depending on the metal it is sensing.
They have modes for different types of searching and prospecting. These can be used in saltwater as well as freshwater.
These types of metal detectors are based on digital technology. They are equipped with several operating modes, with the normal mode as a single tone. The normal mode is typically used for finding things along the beach.
There will be different modes and audio signals that indicate small targets or targets deep in the water. The larger targets will give a much stronger signal.
There is a pulse on the underwater metal detectors, which helps to adjust the depth, battery life, and sensitivity.
They have circuitry made for deep searching, as well as search coils and headphones.
There are some of these detectors that use advanced technology for pulse induction. This gives the user better stability in mineralized environments and detecting depth.
If you look into the more advanced underwater metal detectors, you will find electronics built into the headphones.
This will make the detector easier to maneuver and lighter in weight. They will have a heavy-duty negative buoyancy search coil.
They also have an operating search frequency that is crystal controlled. The more advanced underwater detectors will consist of permanently encapsulated headphones with high output transducers. The headphones are made with a heavy-duty polymer ear surround along with excellent noise-canceling features.
They will work in the rain, on the beach, and even in storms. Additional features of these underwater metal detectors are the handgrip, armrest, silent search, and isolator.
Main Type of Underwater Metal Detector
The hobby of metal detecting underwater requires participants to develop good hearing discrimination. Frequency and intensity that are received by an underwater detector should be listened to carefully, and by utilizing a good metal detector, the task of discriminating is made easier and is learned at a quicker pace.
Underwater metal detectors are broken down into three categories:
- Very Low Frequency, or VLF
- Pulse Induction, or PI
- Broadband Spectrum, or BBS
First, let’s go over Very Low Frequency. These send out a frequency, anywhere from 3 to 30 kHz, into the ground to locate items.
VLF detectors work very well in locating coins and jewelry and do a great job of eliminating readings on unwanted objects.
VLF detectors are affected by ground minerals, so you will need to keep that in mind. However, you can adjust the sensitivity, helping to alleviate this problem.
Next, Pulse Induction. Pulse induction underwater metal detectors send electronic pulses into the ground. These pulses are very sensitive to jewelry and precious metals.
PI’s work very well if you’re a scuba diver because they work in saltwater, detect very deep in water, and are not affected much by the ground minerals in the sand. However, PI detectors can pick up a lot more unwanted items than VLF detectors.
Last, Broad Band Spectrum. What BBS metal detectors do is very similar to VLF detectors in that they send out frequencies into the ground.
However, unlike VLF’s that send out one, BBS sends out multiple frequencies simultaneously, ranging from 1.5- 25kHz.
Although it may be exciting to look for underwater treasures in the deep and around ship wreckage, do not forget about the areas close to the beach. Think about it: people sit on the beach and lose jewelry, coins, cell phones, watches, etc.
The tide comes in and carries this stuff out to sea. Then you come along with your trusty metal detector, starting from the shallows, and work your way out. There has got to be unlimited potential for what you can find.
Underwater Metal Detecting Tips
Possessing it is one thing. Using it’s another.
It knows where and how to use an underwater metal detector will assist in deciding on the best sort when it comes to purchasing.
The fundamental tricks in using the submerged metal detectors are:
In listening to any metal detection from a distance determined by how good the sensor is, having a waterproof headset helps.
The headphones block out any outside noises that will interfere with hearing any noise made by the metal detector.
Tank and snorkel
This will be convenient. A snorkel and a tank will assist in breathing, depending on how deep the diver would need to go. One mightn’t require a tank if they are merely going to a knee-high degree.
Deep-sea needs, in many cases, this when going deep into the ocean to assist them in breathing underwater, and Deep-sea divers must take air tanks.
At some stage, the tank needs to run out of the atmosphere, and the diver will need to go back to the water’s surface to exchange their tank.
To ensure that air doesn’t run out on you without your knowledge, a watertight watch is needed to time underwater in compliance with the air tank.
A carry bag for the metal detector becomes helpful, particularly if you’ll need it along the seashore or if you’re employing your sensor in the knee-high water.
It keeps the sensor protected and prevents the entry of sand particles inside the sensor.
For divers, having a tracking device installed in the metal detector is needed. This will ensure that the remainder of the deep-sea divers stay connected with you and can easily locate you once you’re not in sight.
In some cases, where the diver gets lost in the deep sea, it will assist the investigation team by using this tracking apparatus to locate them.