The 10 Best Dive Knife in 2023 – Professional’s Recommended

Last Updated on March 1, 2023

Scuba diving requires a whole lot of things from a mask to a neoprene suit to a dive computer. But most of the time we forgot about one essential gear that definitely should be on the list. Yes! We are talking about the dive knife. We often spend a lot of money to buy other gear, but a dive knife is worth the money.

A dive knife is an essential gear that is used to free or protect yourself from terrible marine animals. In addition to this, it helps to release yourself from the abandoned fishing net; as well as underwater plants or any entanglements that may come across while wreck diving.

So, for any emergency underwater, a dive knife indeed a useful tool. But how do you know which one is the best dive knife that matches your needs? Well, that’s why we are here. We will guide you to find your match. Read on to know the details.

Best Dive Knife

Quick Answer – Top 10 Best Dive Knife

1. Promate Barracuda Diving Knife

2. Promate Scuba Dive Titanium Knife

3. CressiSkorpion Dive Knife

4. Deep See by Aqua Lung Dive Knife

5. TUSA FK-940 X-Ppert II Titanium Dive Knife

6. Cressi Lima Tactical Dive Knife

7. Promate Scuba Diving Stainless Steel Knife

8. Promate Point Tip Scuba Dive BC Knife

9. Spearfishing Diving Knife

10. Kona Dive Knife

Reviews of the Best Dive Knife

A dive knife is a must-have gear at the wish list of divers. Even if you are a recreational diver, you should carry it because nobody knows about uncertainty.

Also, today’s dive knives are multifunctional which is not limited to a cutting tool. The size of a dive knife depends on where you will wear them on such as gauge console, leg, BCD, or wrist.

But the thing to worry about is finding an excellent quality dive knife. We believe in keeping things simple. This time, our review on the ten best dive knife would help to find the best one among all in the market. Let’s get started.

1. Promate Barracuda Sharp Tip Titanium Diving Knife

Best Dive KnifePromatebarracuda titanium knife is on the top of the list for some reason. The first one is, Promate is a well-known brand for manufacturing quality knives over the years.

The blades are made of titanium with a blunt tip. Titanium makes the blade rustproof and corrosion resistant at any situation. The blades have a very sharp edge that allows cutting very easily.

The handles have an adjustable strap which allows the quick hold and release at no times. This competent handle is made of soft and easy to grip rubber mold. So there is no chance to slip the knife underwater.

At the bottom of the handle, it has a hammer to use for any emergency. The titanium blades are so easy to clean and maintain. After use rinses off and put it on the sheath for storage.

This knife is big enough for anyone to hold and use. Lager handle allows you to keep it for longer. Also, the blade length is so long that you could easily stab a big fish.

The knife includes a sheath with a strap to attach it to your arm or leg. This Promate titanium knife is overall the quality product that comes with an affordable price.


  • Titanium blade
  • Rustproof and corrosion resistant
  • Easy grip handle
  • Additional hammer on handle
  • Easy to clean and maintain
  • Easy to carry
  • Sheath for storage
  • Extra-large blade knife


  • The adjustable strap is a bit short


2. Promate Scuba Dive Snorkel Titanium Knife

Best Dive KnifePromate always makes quality diving equipment, so you have safe diving. This Promatesnorkel titanium knife is quite similar to the previous one with some basic changes.

This full-size blade knife includes a 4.45″ blade with an overall length of 9.45″. The blade is made of durable titanium which is stain and corrosion resistant.

At the cutting side of the blade, it has a sharp edge full tang blade. On the other side of the blade, it has a partially serrated edge with a line cutter.

The ergonomically designed handle comes with finger ridges and titanium butt. It has a durable rubber grip that helps to hold it for a long time. The handle can be used as a hammer or a tank banger for signaling underwater.

The sharp edge knife blade features either a drop point or blunt tip design. This edge allows you to cut rope or a line cutter fishing line. The knife includes an ABS plastic sheath with a double button push release.

This button secures the lock so you can safely dive. It also includes two durable corrosion proof rubber strap that is used for leg attachment.

Overall, it provides all the facility that a professional diver needs for safety. It also comes with a low price compared to the previous one. This is a nice balance of lower cost and quality product.


  • Durable titanium blades
  • Lightweight
  • Stain and corrosion resistant
  • Long blade with sharp edges
  • Easy grip handle
  • Impact resistant ABS plastic sheath
  • Double push button for lock
  • Titanium hammer on the bottom
  • Easy to maintain


  • The sheath’s calf side is not smooth because of plastic rivets with a sharp edge.


3. CressiSkorpion

CressiSkorpionThe Cressi brand is conterminal with diving as they are manufacturing diving equipment since 1946. The Skorpion versatile dive knife is a medium size knife.

Like other diving equipment’s, Cressi brings the quality knife at a very low price. The knife has a resistant tempered AISI 304 steel with a pointed tip and blunt tip.

One side of the stainless steel blade straight-edged that is ideal for spearfishing. The other side of the blade is serrated edged which works perfectly in line cutting.

Its anatomical handle is made of soft and non-grip material. The handle has an anatomical molding for fingers that provide a comfortable grip. It fits easily into your hand even in salt water.

The knife includes a sheath that features a locking and easy-release mechanism. The sheath has two standard straps that allow you to attach the knife with your leg.

The handle also includes a stainless steel butt cap that is effective during an emergency. This general purpose Cressi scorpion knife is indeed a quality knife that should be in your backpack. Like always, this knife is available at a low price.


  • Fixed stainless steel blades
  • Sharp pointed tip and blunt tip
  • Straight and serrated edge
  • Ergonomically designed handle
  • Non-slip
  • Comes with durable sheath
  • Locking mechanism at the sheath
  • Easy to attach


  • Rattle in the case while unclipping knife from the case


4. Deep See by Aqua Lung Dive Knife

Aqua LungThe Aqua Lung Squeeze lock dive knife is popular among the diver for its rugged and streamline design. This compact knife can be easily attached to the BCD.

The blade of the knife is equipped with a 304-series stainless steel blade. The blade is rust proof and corrosion resistant. The blade has a blunt tip so you can open curious things more efficiently.

The one side of the blade has a flat and straight blade that can be used for regular use. The other side of the blade has a serrated edge with a line cutter.

The handle is made of soft plastic material with a positive grip. The knife has a molded belt clip sheath with a patented squeeze-lock.

This sheath is great for adding protection in your next dive. Also, the quick release involves minimal movement while squeezing the handle. This is one of the best at a reasonable price.


  • Stainless steel blade
  • Blunt tip
  • Positive grip handle
  • Easily attached to the BCD
  • Patented squeeze lock
  • Excellent for cut lines and collect trash


  • Not an ideal option for fish spearing


5. TUSA FK-940 X-Ppert II Titanium Dive Knife

Best Dive KnifeAn affordable all-rounder knife is on the list brought to by TUSA. This is a heavy duty option for a professional diver. Because of the sturdy construction, TUSA titanium dive knife lasts for a long time.

The knife includes a high-quality titanium blade which is corrosion resistant. The blade has a sharp drop point tip that can be used for aimed the target. The one side of the blade has a straight edge.

The other side of the blade as a serrated edge with a line cutter. This newly designed handle is made from a durable rubber and plastic material. It has an ergonomic grip with an eyelet that used for attachment of a wrist lanyard.

It includes a plastic sheath with a push-button release to ensure that the knife is in place. The sheath has straps and adjustable buckles for providing a comfortable fit.

The knife is easy to disassemble so the cleaning is easy. Though a titanium blade needs time to sharp, it will stay sharp for longer. Also, the price is a bit high but worth the money.


  • Highly corrosion resistant
  • Ergonomic grip
  • Straight edge and serrated edge blade
  • Single button sheath
  • Comfortably fit
  • Leg strap and sheath included


  • The price is a bit high compared to others


6. Cressi Lima Tactical Dive Knife

Best Dive KnifeThe Cressi Lima is a small and compact emergency knife for the divers. The knife is so convenient to carry on the diver’s arm. An ideal dive knife should have the ability to run in an emergency.

It comes with a short 420 stainless steel blade with a straight drop tip. Like others, the blade has a straight edge, and the other side has a serrated edge with line cutting. The serrated side can be used for sewing heavier ropes.

The knife has an anatomical and non-slip handle which is made from a soft grip material. The handle comes with an anatomical molding for the fingers to fit.

It includes a sheath with a locking mechanism which allows the one-hand release. The sheath features a lock slider that prevents the accidental loss. The knife can be operated with one hand.

This knife is so compact and lightweight that you can carry easily. It can be easily attached to a BCD or gauge hose for easy access. A leg or arm strap allows you to place it easily.

This Cressi Lima is an ideal option for scuba diving, water sports, and snorkeling. This knife is one of the low priced among all other in the list.


  • Sharp stainless steel blade
  • Small and compact design
  • Lightweight
  • Sheath with the locking mechanism
  • Easy access
  • One hand operation


  • Not an ideal option for wreck diving


7. Promate Scuba Diving Stainless Steel Knife

PromateAnother largest blade knife in the list by the same brand. Promate is leading the market with their most large and high-quality knife. This is why we pick another Promate dive knife in our list.

The 5” blade is made from high-grade stainless steel with a Barracuda sharp tip. Both sides of the blade are functional.

One side of the blade has a straight edge with a notch toward the handle. The other side of the blade has a serrated edge that is equally effective during spearfishing. The blade is stain and rust proof.

The handle of the knife is made of soft rubber and plastic material. It has a lanyard hole for attachment. At the bottom of the handle, it has a stainless steel butt cap.

This butt cap can be used for hammering or hitting. The knife features an adjustable strap and sheath to store the blade. It allows the quick release of the knife during an emergency.

The knife can easily disassemble for cleaning. For longer life of the knife rinse the knife with fresh water and dry with a clean cloth. Unlike other Promate knife, you will get this one at a very reasonable price.


  • Longest blade
  • Sharp stainless steel
  • Multi-functional
  • Stainless steel hammer on handle
  • Quick release strap and sheath
  • Easy to clean and maintain


  • The straps are backward


8. Promate Point Tip Scuba Dive BC Knife

Promate PointThis small serrated blade knife is equally effective as the other long blade knife. The reason is Promate always take the variation in their product for versatile uses. But, the quality remains same as other Promate products.

This small and versatile knife is must-have gear for snorkeling. The blade is made with 420 stainless steel which is sharp enough. Like otherPromate knives, both sides of the blades are equally functional.

One side of the blade has a sharp edge with a small notch while the other side it has a serrated edge. The knife includes a molded sheath with pre-installed clips, which is great for easy mounting.

The sheath has a single button locking system for easily securing the blades. A Velcro closure strap allows you to place the knife at most of the places. The handle has a butt cap with a lanyard hole for attachment.

Overall, this small blade knife is durable and works great for diving and snorkeling. Unlike other Promate knife, the price is very low compared to all others in the list.


  • Small and versatile
  • Molded sheath with pre-installed clips
  • Single button locking system on the sheath
  • Stainless steel blades
  • Butt cap with a lanyard hole
  • Sharp edge


  • The tip is not that sharp as others
  • Not durable as other


9. Spearfishing knife – Diving Knife

Best Dive KnifeThe most stylish blade knife in the list is brought to you by MahiMahi Group though this dive knife is ideal for spearfishing but can be used for other purposes.

This super sharp and pointy finisher knife is also an excellent option for scuba diving. This 420 stainless steel blade looks like a laser because of the fine texture.

The handle is made of soft material with a better grip. So it is easy to handle the knife. One side of the blade has a serrated edge where another side is flat.The blade has a sharp drop point tip for accurately pointing the target.

The knife includes a rubber sheath to lock the knife, and it is so easy to put in the sheath. Also, rubber straps allow you to place the knife on your leg or arm.Secure the lock with an audible click so that you never lose your knife.

The click button is attached with a handle. This small yet super sharp blade knife is so lightweight that you can easily carry. The price is also reasonable at a time.


  • Ideal for spearfishing
  • Small and compact
  • Sharp stainless steel
  • Drop point tip
  • Rubber strap and sheath


  • Not ideal as a primary knife for diving but works great


10. Kona Dive Knife

Best Dive KnifeThe last one is a professional grade knife for spearfishing. MakoSpeargunsnever compromise with the quality though they provide their product at a low price.

This dive knife is similar to other high-quality dive knife but with a small blade. This small blade is made from a 420 stainless steel blade with a Teflon coating.

Teflon coating ensures the durability of the blade without compromising with the quality. It features a curved handle for a comfortable fit in your hand.

The handle has the finest grip so that you can hold them for long. At the bottom of the handle, it has a small lanyard hole for easy attachment.

The knife includes a soft plastic sheath along with two long holes for attaching with strap. A MakoSpearguns Marseilles style strap is included with the knife.

This 17” long strap allows you to attach the knife with waist or leg or arm. This is probably the longest strap in the list which can be used a weight carrier. Overall it’s a great deal for the professional diver at a convenient price.


  • Small yet sturdy knife
  • High-quality stainless steel
  • Easy to access
  • Sharp serrated and straight edge
  • Sharp drop point tip
  • Extra-large strap
  • Easy to clean and maintain


  • The sheath is a little hard to use one hand


Dive Knife FAQs

What is a Dive Knife?

The dive knife is diving stuff that scuba divers use to cut tangled fishing lines on their tanks. It is specially designed for underwater use. Divers use this diving tool to remove entangling ropes and underwater plants. However, some people consider the diving knife a weapon, which isn’t true. Every scuba diver shouldn’t use this knife to harm underwater creatures.

How Do I Choose a Dive Knife?

After considering a few factors regarding dive knives, you can pick the best knife. Below, we will describe those factors that you can follow.


The blade is a quintessential knife’s feature that you can’t ignore. The blade’s tip can be blunt or pointed.

The blunt tip knife is appropriate for recreational divers. These blades won’t pierce through anything unintentionally. After determining the blade, you need to inspect its edge. You will notice two blade’s edge type. One is straight, and another is serrated. Knives featuring serrated edges tend to cut through rigid objects, and their sharpness stays for an extended period. Anyway, you have to choose the edge type as per your type of diving.


The dive knife’s size is another crucial feature. For basic dive, you won’t need a bigger dive knife. In essence, you may not need any dive knife at all for such a kind of dive. You will need a dive knife when you are going for a scuba dive. Remember, when you are underwater, you have to carry your knives in a case. So, try to choose a dive knife, which size is about 4 inches. If you go with a larger knife, you may fall into trouble instead of being benefited.


The dive knife’s material is another noticeable factor. Usually, most dive knives feature either stainless steel or titanium structure. The stainless steel knives are pretty reasonable. But they are more prone to rust, and they require regular maintenance. On the contrary, titanium knives need no maintenance as they do not rust. But they are quite expensive. Thus, you should go with one that suits your budget and requirements.


Attachment is the last but not least fact that you should take into your account before opting for any dive knife. Most divers attach their knives to their legs.  Later on, with time, divers switch the knife placement on the BCD. Mounting knives with BCD, divers can easily reach the knife. Depending on this fact, you have to choose your dive knife.

Should I Use a Dive Knife for Snorkeling?

From safety aspects, you should carry a diving knife while snorkeling. You don’t know what you may face up with when snorkeling deeper. You may get yourself caught in fishing nets, lines, or something else. Thus, if you have a dive knife, you can easily cut such barriers and make your snorkeling a lot easier.

How to Secure a Dive Knife?

Before dive underwater, you need to ensure the correct placement of your dive knife. You can place it on your leg, ankle, or you can mount it with your BCD.  You can use leg straps to secure your knife. You can also store the dive knife in your pocket or attach it to the air hoses. No matter which way you follow to secure your knife, make sure you can easily reach it.

How to Make a Dive Knife Rust-Free?

Depending on the rust, you can apply the mentioned below methods:

If your knife gets very light corrosion, you can wipe it off with the help of a towel or toothbrush. If it contains more stains and rust, you have to soak the knife in vinegar for a few minutes. It will help the knife automatically remove rust. While applying this technique, make sure that you do not soak your knife for more than six minutes.

However, if the rust still exists on the blade’s surface, you need to wipe the knife and use a toothbrush to remove some lighter stuff. You can also use an abrasive sponge, but ensure that you scrub gently. In this way, you can make your knife entirely rust-free.

Final Words

While scuba diving is one of the beloved sports, you should take every precaution possible. Before buying a quality dive knife for you make sure to understand all the type and criteria. Also, think about what situation you are going to use for, how much you want to spend or what features you need.

Then check all the above models and match the criteria. Remember, dive knife should be your long time investment. So, don’t consider what others use or the poor quality one with the lowest price.

If you are fitted with all the criteria, then you are ready to go. We hope this review was helpful for finding the best dive knife. If you want to recommend a different knife that we didn’t include, then please comment below. We’ll come back with another interesting topic. Till then:

Stay Connected!


You May Also Like to Read

Leave a Reply

Your email address will not be published. Required fields are marked *