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6 Best Titanium Diving Knives – Reviews and Buying Guide

Are you going scuba diving? Have you kept all the necessary tools and gear with you? Wait, did you forget to keep the diving knife with you? A dive knife is a very beneficial and crucial safety gear to help you get untangled from the debris or free the trapped marine animal underwater.

A dive knife is made to be long-lasting, sharp, and durable to cut through any current. Dive knives are not created equal and with the same material. Among all the materials, Titanium is the most preferred diving knife for scuba divers. Titanium has the most substantial corrosion-resistant properties.

Scuba divers prefer a diving knife that comes with anti-rust, corrosion-resistant features and has the ability to hold the edge for long. We have reviewed the best titanium dive knife available in the market for you in this article. Along with that, there is a buying guide at the end to help you with your buying journey.

Titanium Diving KnivesBrandExpert RatingPrice
Scubapro Mako
Promate Barracuda
Aqua Lung
Atomic Aquatics

6 Best Titanium Diving Knives – Reviews

Below, you will read the six best titanium dive knives reviews based on their excellent features, durability, and customer reviews. Select the one that matches your diving needs and style.

1. Scubapro Mako Titanium Diving Knife

A multi-functional knife is what you need to take with you on your diving expenditure. The dive knife is compact and lightweight, making it an exceptional general-purpose, maintenance-free, and corrosion-resistant gear.

Photo credit: Amazon

The dive knife is made of a full tang and robust titanium blade. The knife is double-edged with a straight and serrated side and line cutting notch. The blade is 3.5 inches long and comes with a handle that includes a bottle opener.

The unique structure of the knife provides a comfortable yet strong handle grip. The handle is equipped with a thumb guard, which protects your hands and prevents the knife from slipping. Besides, it also comes with a sheath and unique locking mechanism. It is convenient and accessible to use as you can release it single-handedly.

A dive knife is a versatile tool that you can easily mount on the BCD. It just weighs 0.4 pounds, which is quite convenient to carry and store.


  • It comes with a double-edged blade
  • Compact and lightweight design
  • It offers a multi-functional build
  • Equipped with a special locking mechanism
  • Straps could have been slightly longer

2. Promate Barracuda Sharp Tip Titanium Diving Knife

A scuba diver needs a dive knife frequently to cut through the entangling fishing line from their tanks. The robust bottom and titanium blade of the Promate Barracuda Sharp tip knife proves to be an excellent choice for underwater conditions.

Photo credit: Amazon

The knife’s choil comes with a notch that has a hook to cut and pull the items. The pointed and straight side of this double-edge knife also has a serrated edge on the other side.

The 5-inch blade is the standard and most favorable size of many professional and beginner scuba divers. Furthermore, the dive knife is equipped with two rubber straps to attach it around your legs or arm. It comes with an easy-to-use, fast-release function.

To hold the dive knife, it comes with a textured handle. At the base, it has a lanyard hole. Apart from that, the dive knife is easy to clean as you can disassemble it fully.


  • It comes with an additional line cutting notch
  • Can retain the edge for an extended period
  • Easy to grip handle
  • It comes with a sheath to store safely
  • Shorter adjustable straps

3. Underwater Kinetics Blue Tang Titanium Diving Knife

The blunt tip dive knife is the best when it comes to scuba diving. They are perfect for everyone who would like a military-grade tool. The dive knife comes with a powerful titanium blade length of 5 inches.

Photo credit: Amazon

Other scuba diving knives are meant for limited use and pose a challenge to maintain. This blunt tip dive knife has corrosion-resistant and non-magnetic properties. Therefore, it is made to be long-lasting and durable.

The double-edge line cutter comes with a straight and serrated edge on both sides. Thus, the dive knife enables you to cut through the fishing line, ropes, and different underwater objects.

For mounting, the dive knife comes with straps and a sheath for storage. Besides, you can find this titanium knife in two colors in black or yellow highlights. However, the yellow color offers more visibility underwater.

You can disassemble the knife easily for cleaning and maintenance. The parts are removable and can be assembled within minutes. Thus, it offers a hassle-free cleaning.


  • It comes with a corrosion-resistant titanium blade
  • Serrated edge allows an easy cut through line or rope
  • Equipped with a contoured handle for safe grip
  • Easy to disassemble for cleaning
  • The sheath is slightly difficult to maneuver

4. TUSA FK-940 X-Pert II Titanium Dive Knife

TUSA is a reputable and trusted brand for manufacturing the best quality gears. And the X-pert dive knife is one such incredible tool that can handle underwater pressure and challenging conditions.

Photo credit: Amazon

With a quick-release mechanism, the dive knife is easy to use. Moreover, you can strap it to your arm, thighs, or calf. With the 6-4Ti titanium blade, the dive knife shows corrosion resistance. Also, it doesn’t require much maintenance and cleaning.

The dive knife comes with a handle that is ridged and has rubber at an accurate place. The counterweight built of the knife makes it easy to handle without any fatigue.

TUSA is equipped with a flat head or a drop point end with standard line cutting and serrated options. Apart from that, you can easily disassemble it for cleaning.


  • The quick-release button is easy to use
  • High-quality and sturdy construction
  • Require minimal or no maintenance
  • It comes with a counterweight rubber grip handle
  • Instructions to use are not apparent in the manual.

5. Aqua Lung Argonaut Titanium Diving Knife

The next titanium dive knife on the list is the high-end dive knife, Aqua Lung Argonaut Titanium Diving Knife. The dive knife is a full tang knife that comes with a 4 mm thick solid titanium blade. Further, the blade is covered with EDP coating for protection.

Photo credit: Amazon

The tip of the blade is either available as a blunt tip or spartan/point tip. However, the blunt tip comes with a fully serrated edge. The pointed tip or spartan tip has a straight part along the tip and serrated edge.

Apart from that, the handle is double protected by a 5 mm thick & durable paracord. Along the paracord, there is a 1/4 inch strap hole. Additionally, the titanium dive knife has a Kydex sheath of 2 mm thickness.

You can wrap the two rubber leg straps around the leg. It will also keep the sheath in place when you dive. The knife’s butt is pointed, which can be used to crush or hammer objects whenever required.


  • Handles are double wrapped for a secure grip.
  • It offers a combination of straight and serrated edge
  • Highly durable and rust-resistant
  • It comes with a pointed butt
  • Slightly expensive

6. Atomic Aquatics Titanium Ti6 Scuba Diving Knife

The last addition to the list of titanium dive knives is Atomic Aquatics Ti6 Scuba Diving Knife. Atomic Aquatics dive knives are made of superior quality and durability.

Photo credit: Amazon

The line-cutting notch and serrated edge make this titanium dive knife the best for emergency and entanglement situations. The best part of the titanium blade is that it does not rust. Moreover, the 4-inch blade length comes with a curved cutting edge for exceptional use.

The titanium dive knife is equipped with a push-button release and lightweight locking sheath. You can use the diving knife whenever you require without any hassle.

You can easily use the knife single-handedly. Besides, the line cutter offers quick adjustment to the strap and sheath. The leg straps are 17 inches long, which is suitable for most scuba divers.


  • It comes with an adjustable sheath and strap
  • Equipped with a contoured handle
  • Full tang dive knife
  • Razor-sharp tip of the blade

  • Size is too big to be mounted on the BCD

Titanium Dive Knives – Buying Guide

Now that you have read the reviews of the six best titanium dive knives, it’s time to buy the one that suits you the most. Before you proceed to purchase the dive knives, you should consider a few important factors.

The factors will allow you to select the dive knife suitable for your diving needs precisely.



The knife comes with two tangs, half and full tang. Tang is the non-sharpened part of the knife, which is situated opposite to the blade’s tip. The tang is attached to the handle.

Full tang dive knives have a sharp tip and are made with solid metal that goes towards the handle’s end. Full tang knives cannot be folded.

Half tang dive knives have a metal that extends only up to halfway through the handle. The half tang dive knives come with a hole at the end where this metal is connected with handle material.


Blade Material

Titanium blades have incredible corrosion-resistant properties. It is also lighter compared to a stainless steel blade. Furthermore, titanium dive knives can retain the sharp edge for a longer period and do not require regular sharpening. However, the Titanium blade is expensive compared to the stainless steel blade.


Blade Size

You should look for the blade length of the titanium dive knife between 3-5 inches. If you go beyond this length, it will be too long and heavy. In contrast, if you buy the 2-inch diving knife, it can clamp in your air hose. Also, you will need straps for longer knives to secure them around your leg.



The next consideration should be the handle’s ergonomics. The titanium dive knives should come with a grippy texture that will not slip while using. With a textured handle, the knife can easily handle strong currents underwater.

In addition to the handle, you should check the metal butt. You can find the metal butt towards the handle end. This metal butt is useful and can be used for hammering and crushing objects.


Edge and Tip of the knife

The durability and longevity of the knife depend on the edge. The knife comes with either a serrated and straight edge or a combination of both.

  • Serrated: Suitable to cut fibrous materials such as ropes or kelp.
  • Dull: Blunt tip is suitable for prying, chiselling, and digging objects.
  • Plain: The knives are ideal for cutting smooth surfaces, plastic and nylon ropes.
  • Tanto: Tanto tip combines dull and pointed tips. Its angled tip comes with a sharp edge, and the very tip has a blunt tip. Thus, the Tanto tip allows you to enjoy the best features of both tips in one knife.
  • Pointed: These knives are best for puncturing and cutting. You need to be careful as they can also puncture the gears.


Holders, Attachments, and Sheaths

The dive knives with the folding design are easy to store on a clip or in your pocket. Most non-folding knives will require a sheath to attach to equipment. The scuba divers prefer straps to attach to their thigh, legs, or calf.

The sheath should come with a locking and quick-release mechanism to secure it in place and detach whenever required.


Lanyard Hole

A lanyard hole is helpful as it allows you to wrap the knife to the other gears and around your neck. However, you will not find all the titanium dive knives with a lanyard hole. So, make sure you check before buying.

Also, it will depend on your personal preference, whether you need a lanyard hole or not.



Titanium knives do not require much maintenance. Plus, they are easy to clean. Most diving knives can be fully disassembled for cleaning and then assembled again in no time.

To clean the dive knives, you should rinse the knife with fresh water and let it dry entirely. Before storing or placing it in the sheath, apply a small amount of oil and grease to maintain its edge.


Fixed knife vs. Folding Knife

The Last but crucial decision is to determine whether you need a fixed or foldable diving knife. The folding dive knife has a short tang and is lightweight. They can be easily locked to avoid accidental slicing and puncturing of your gears. However, they are tough to open with a single hand.

In contrast, the fixed knife has a full tang and cannot be folded. They do not require maintenance compared to folding knives.


Frequently Asked Questions


Where should you mount your dive knife?

You can mount your knife on the BCD pocket, leg, thigh, calf, or even ankle. Before mounting, always analyze what risks are involved while mounting the knife in those specific locations. Also, always keep the knife in the protective sheath to avoid injuries or accidents.


Do you need to purchase a dive knife?

Dive knives are worth considering when you are going on high-risk dives. It is better to carry one with you always as you never know when you need to untangle yourself from fishing lines and other debris.


When should you not use a dive knife?

A dive knife is used for your safety. It would be best if you did not use it to scare off marine animals. By doing so, you will harm the underwater creatures. Therefore, it is better to undergo proper training on using the knife before actually using it underwater.


Final Thoughts

The best titanium dive knives perform efficiently as a rope or line cutter that gets in your way while diving. Therefore, you should look for knives that include all the valuable features, sharp edges, and correct size.

All the knives reviewed above are the best in the market. Take your time and study each review to find what works for you the best and whatnot. Only after that should you proceed with your buying process.

We hope we helped you through your buying journey to choose the best titanium dive knife.