7 Best Dive Knives of 2021

Best Dive Knife

All scuba divers require some mandatory set of accessories to carry along, as they dive in the sea. A dive knife is also among those hugely important accessories. These knives are for your security inside the water.

Although this accessory is quite important, many divers forget to take it along and then regret at a later stage. That is why, you need to buy the best dive knife and then make a habit of taking it with you into the sea.

Here we will discuss about the finest model in diving knife and how to pick the best one:

Product Name

Overall Length


Blade Material

Current Price

1. Promate Barracuda Sharp Tip Titanium Diving Knife


11.2 oz


2. Promate Scuba Dive Snorkel Titanium Knife

9.45 in

11.2 oz


3. Tusa Blunt Tip Dual Edge Mini Dive Knife

6.3 in

16.0 oz

304 Grade Stainless Steel

4. Cressi Skorpion Dive Knife

9-1/8 in

8.0 oz

Japanese 420 Stainless Steel

5. Fury Tactical Extreme Dive Knife

7.75 in

3.52 oz

440C Stainless Steel

6. Mako Shark Dive Knife with Leg Strap Sheath

8-5/8 in

7.2 oz

420 Stainless Steel

7. U.S. Divers Titanium Diving Knife

9-1/2 in

12.0 oz


1. Promate Barracuda Sharp Tip Titanium Diving Knife

Promate Barracuda Sharp Tip Titanium Diving Knife

Photo: Promate

  • Blade Length: 5 inches
  • Blade Material: Titanium
  • Weight: 11.2 ounces

Starting with the basic features, the knife is equipped with 5 inches titanium blade which is considered as the finest quality blade in dive knives. Since the knife is going to be inside the water for most of the time, it is essential to consider blade material carefully.

Titanium dive knife will not corrode or rust itself. They are high in performance and causes least amount of problem for the user. It has rubber coated handle that make holding the knife super comfortable.

Furthermore, this knife has quick release and adjustable straps that will foster its performance underwater. It does not require a lot of maintenance and is easy to disassemble for cleaning purposes.

However, it is high in weight and also charged excessively, yet you can consider it if you are willing to spend a decent amount on a dive knife.


  • Corrosion-resistant blade
  • High in performance
  • Adjustable straps


  • Expensive
  • Heavy

2. Promate Scuba Dive Snorkel Titanium Knife

Promate Scuba Dive Snorkel Titanium Knife

Photo: Promate

  • Blade Length: 4-3/8 inches
  • Blade Material: Titanium
  • Total Length: 9.45 inches
  • Weight: 11.2 ounces

This one is a lightweight model with titanium blade attached to it. The blade material is extremely durable and is completely stain-resistant. It also does not allow corrosion or rust to spread on the knife.

The 4-3/8 inches blade is full tang from one side and partially serrated edge and a line cutter on the other side which means this knife can give you versatile cutting options.

It has got rubber molded handle that gives firm grip underwater and the finger ridges make it super comfortable in holding. It’s titanium butt can be used as a tank banger or for hammering purpose.

This model is available with two types of tips- blunt or drop point tip. The knife does not require a lot of maintenance and it can be cleaned easily. You will get this model with a plastic sheath and 2 durable corrosion proof double leg straps.


  • High quality titanium blade
  • Comfortable handle
  • Available in two tips
  • Corrosion-free, Rust-free
  • Require less maintenance


  • Expensive

3. Tusa Blunt Tip Dual Edge Mini Dive Knife

Tusa Blunt Tip Dual Edge Mini Dive Knife

Photo: Tusa 

  • Blade Length: 2.8 inches
  • Blade Material: 304 Grade Stainless Steel
  • Total Length: 6.3 inches
  • Weight: 16 ounces

This knife is small in size yet powerful enough to serve you satisfactorily. The compact, blunt tip blade is made of highest quality stainless steel. This means that your knife will stay away from corrosion and rusting. Also, its performance and durability will be enhanced.

The short blade is convenient to manoeuvre in the tight spaces. This model is full tang from one side and possesses serrated edge and line cutting notch on the other side. This increases the versatility of the knife, making it more useful under water.

The handle is made of quality material and is durable enough to serve you for longer period. There is a sheath that comes along with the knife to lock it when not in use. The hose mount helps in clipping the knife to the belt.

This model is available in different colours and comes with 1-year warranty by the manufacturers.


  • High-quality stainless steel
  • Durable
  • High in performance


  • Small size
  • Heavy

4. Cressi Skorpion Dive Knife

Cressi Skorpion Dive Knife

Photo: Cressi

  • Blade Length: 4-3/8 inches
  • Blade Material: Japanese 420 Stainless Steel
  • Total Length: 9-1/8 inches
  • Weight: 8 ounces

The Cressi Skorpion is a good dive knife that comes with a 4-3/8 inches 420 stainless steel blade which is incredibly strong, stain-resistant and require less maintenance. It is a precisely tempered blade, ideal for scuba diving and spearfishing.

The knife is featured with straight edge on one side and serrations on the other side, making it a general-purpose knife for spear-fishermen and scuba divers. The anatomical, non-slip handle is extremely comfortable and keep your grip firm.

You will get this model with leg and arm strap attached with the sheath. These straps make it easy to carry the knife as you go underwater. Also, these straps make the knife more accessible. It is a great dive knife that you should carry for emergencies.


  • Anatomical Handle
  • Lightweight
  • Economical
  • Durable


  • Steel may corrode after some time

5. Fury Tactical Extreme Dive Knife

Fury Tactical Extreme Dive Knife

Photo: Fury

  • Blade Length: 3.25 inches
  • Blade Material: 440C Stainless Steel
  • Total Length: 7.75 inches
  • Weight: 3.52 ounces

If you are looking for an extremely affordable dive knife then this one will suit your needs perfectly. It is a small knife with drop point pin blade made of 440C stainless steel. The steel is of decent quality which will stay away from stains, corrosion, and rust.

The blade is extremely sharp, especially from the tip which will help you in the time of emergency. One side of the blade is serrated whereas the other is straight-edge, boosting the usefulness of the knife.

The handle is its USP as this model has got a unique handle of black eazy grip resin. It is really comfortable and does not slip as you use it under water.

Furthermore, the knife comes with quick release kraton sheath with leg straps for added convenience.


  • Multi-purpose knife
  • Very economical
  • Quality steel
  • Extremely sharp tip


  • Too lightweight
  • Performance issues

6. Mako Shark Dive Knife with Leg Strap Sheath

Mako Shark Dive Knife with Leg Strap Sheath

Photo: Mako 

  • Blade Material: 420 Stainless Steel
  • Total Length: 8-5/8 inches
  • Weight: 7.2 ounces

It is one of the budget-friendly knives in our list today. This one is a one-piece stainless steel knife that is made to serve the buyer for years. The blade material is 420 stainless steel which is considered to be a good quality steel in knives.

This model is equipped with razor sharp serrations on one side and straight edge on the other. The handle features multiple holes which make it easy to hold and operate.

The size of the knife is great to carry along with you in the sea. This model comes with impact resistant sheath that can attach to the ankle of the scuba diver. It also makes the knife more accessible.

You can consider this product if you are looking for a decently priced and feature-rich best diving knife online.


  • Durable
  • Inexpensive
  • Multi-purpose knife


  • May corrode or rust soon
  • Difficult to hold

7. U.S. Divers Titanium Diving Knife

U.S. Divers Titanium Diving Knife

Photo: U.S. Divers

  • Blade Length: 5 inches
  • Blade Material: Titanium
  • Total Length: 9-1/2 inches
  • Weight: 12 ounces

This model is equipped with a 5-inch one-piece titanium blade, completely rust-free and corrosion resistant. The blade is made to serve for years. It is extremely durable, sturdy, and sleek. The serrated top edge is ideal for cutting through tough materials.

It has straight edge with a line cutter on one side and serration on the other. The line cutter is for the safety purpose and this knife does the job splendidly. The gray handle with lanyard hole makes it easy to hang it to your pocket. Also, the handle is extremely comfortable to hold.

It is easy to disassemble and clean the knife. This model comes with a quick release sheath and rubber leg straps which make the knife more convenient to carry and access.

You will also get 2-year warranty with this model. It is undeniably the best titanium dive knife in our list today.


  • High quality blade
  • Extremely durable
  • Non-corrosion
  • Easy to maintain and clean


  • Highly expensive
  • Heavy

How to Buy the Best Dive Knives

How to Buy Best Dive Knife

Photo: Flickr

Dive knife is also recognized as saltwater knife is an essential tool to carry as you go underwater. Considering the significance of these tools, we are going to share some tips that will help you in finding the best model:

1. Blade

In every knife, the blade is of vital importance. A dive knife blade comes in two different types:

  • Fixed Blade: Mostly, the knives with fixed blade comes with a sheath that cover and protect it. The advantage of such kind of blade is that it can be taken out with one hand. Also, it is easy to operate in the time of need.
  • Foldable Blade: The foldable blade knives are mostly smaller and lighter. These can be locked as you use them but the one disadvantage here is that these models can be hard to open.

Also, there are two types of blade materials available in dive knives:

  • Titanium Dive Knives: Most of the buyers prefer buying titanium blade knives because they are very strong and completely corrosion and rust-free. Also, these require less maintenance. But at the same time, these knives are difficult to sharp.
  • Steel Dive Knives: The blades made of steel material are more prone to corrode or rust. However, these are also very strong and holds the edge very well. They can be sharpened conveniently.

These knives are available is different sizes. It is important to pick size of the blade carefully that makes it easy operate.

2. Handle

Handle of a knife is also very crucial. It should be extremely comfortable to the hand. If you are wearing gloves as you dive in the water, you must ensure that the handle maintain firm grip in the hand.

There are some handles made of metal whereas others are coated with rubber or synthetic material. You should pick the knife with firm grip handle.

3. Sheath

Sheath is very important component with a dive knife. It protects the knife and keep it encased when not in use. It is essential to see if the sheath straps properly fit your leg or not. If it doesn’t fit fine then the knife will probably fall out and you will end up losing it.


As we conclude the dive knives review, we would like to say that these models are great in performance. These knives give you firm grip and exceptional durability as well.

All the models are great value of money. You must note that dive knives are extremely important for your under water needs.

If you are a beginner then you must start with an economical knife whereas professionals can make desired purchase as per their requirements.

Explore the models and make your choice!

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