Unveiling the Best Diving Knife Selections for 2023

#1 Pick

Promate Titanium Scuba


Aqua Lung Argonaut

Best Budget

Cressi Skorpion

The scuba gear market is vast, filled with a bunch of accessories and equipment. But among them, one of the essential tools that often go unnoticed is the diving knife. No, it’s not just there to make you look like an underwater Indiana Jones. It serves real practical functions. It can free you from entanglements, help you signal your buddy or assist in underwater tasks. Now, why settle for any ordinary knife when you can own the best dive knife for 2023?

Whether your scuba diving takes you to the majestic Caribbean or the serene Pacific, a high-quality diving knife will keep you safe. The best part? We’ve lined up some fantastic models for 2023 that not only function exceptionally but resist corrosion splendidly. Rust can be a real party pooper after a fun diving event, but not with these knives, folks. Now, let’s get to the fun part and take a look at what we got in store for you!

Choosing the Best Diving Knife

So, you’re looking to invest in some top-notch scuba gear. That’s great! But with all the shiny equipment out there, how do you choose the best dive knife? Well, the answer is simple – you need to consider your driving habits, the type of diving you engage in and, most importantly, the knife’s functionality. A good diving knife should be reliable, easy to handle, and, of course, it should resist corrosion effectively. After all, you don’t want your knife turning rusty after a few saltwater dips, do you?

The Importance of a Reliable Diving Knife

The importance of a reliable diving knife in your scuba gear toolkit cannot be understated. Imagine being in the depth of the ocean and coming across an entangled marine creature. With a swift sweep of your best dive knife, you could cut the creature free and preserve marine life. Or consider being tangled in discarded nets or lines yourself. With a sharp dive knife, you can cut loose and ensure your underwater expedition doesn’t turn into a horror story. So fellas, don’t underestimate the power of a good dive knife!

High-Quality Diving Knives: Top 9 Picks for 2023

There’s a slew of dive knives out there, but we’ve narrowed down the list to the ten top-notch picks for 2023. Each knife has been handpicked for its superior quality, ergonomic handle, and of course, the ability to resist corrosion. Whether you prefer a compact diving knife that fits snugly into your BCD pocket or a more robust knife design, we’ve got your back. And hey, even if you’re a marine life enthusiast who needs a knife to help free trapped animals, we’ve got a knife for you. So folks, get ready to choose your underwater partner!

1. Promate Titanium Scuba – Traveller’s Favorite

Score 9.2 OUT OF 10
Promate Titanium Scuba

Introducing the traveler’s favorite – the Promate Titanium Scuba knife. This scuba knife has bagged the crown for being the most-loved by divers across the globe. With its superior performance and robust build, it’s no wonder it’s a divers’ preferred choice. With this one by your side, you’re always ready for an underwater adventure!

This high-performance knife boasts a Titanium blade known for its prowess in cutting rope and other materials swiftly. Its sturdy build is complemented by its sleek design, making it not just a tool but a beauty to behold.


  • It’s a multi-function scuba knife, delivering versatility at its best.
  • Titanium construction makes it durable and resistant to rust.
  • Features both a plain and a serrated edge, offering options for different cutting needs.
  • Affordable price point makes it accessible to most divers.
  • Excellent user reviews attest to its reliability and efficiency.


  • Size may be a concern for divers with limited storage space.
  • Its availability could be an issue due to its popularity.

2. Aqua Lung Argonaut – Top Rated Overall

Score 9.4 OUT OF 10
Aqua Lung Argonaut

Alright, folks, let me introduce you to the top dog of dive knives for 2023 – the Aqua Lung Argonaut. This bad boy’s got a reputation that precedes it, and for a good reason. It’s a titan in the water and a reliable companion in your scuba diving expeditions.

The Argonaut boasts a titanium make-up, making it lightweight and resistant to rust – a real winner for those who constantly find themselves in and out of the water. Also handy is the squared, blunt tip profile that allows the knife to get under any strap with ease, making it perfect for cutting rope, among other things. Its got a sharp plain edge on one side, and a mean serrated edge on the other. But hey, don’t get too overexcited and start prying stuff with it, this guy is a bit on the thinner side for that type of work.


  • Blunt and Spartan Tips: It’s like getting two types of knives in one package. One for the regular stuff, one for knockin’ Poseidon off his sea-horse.
  • High-quality Titanium Blade: This has got the rust-resistance to match. Titanium equals tough. You’d have better luck wrestling a sea otter for an oyster than seeing this blade give in.
  • Sharp Plain and Serrated Edge: Like a saw and slicer all rolled into one. A reliable companion, whether you’re cutting through tough kelp or tangled rope.
  • Lightweight Design: You won’t feel like you’re lugging Excalibur around underwater.


  • It’s thin, so don’t go attempting to pry open treasure chests. This knife’s no crowbar, Johnny Depp.

3. Cressi Skorpion – The Most Versatile

Score 9.2 OUT OF 10
Cressi Skorpion

Cressi Skorpion, the Jack of all trades in the diving knife world. This beast boasts versatility that makes it ideal for any underwater situation you might find yourself in. It’s a quick-draw McGraw with its rapid release sheath, ready for action at the drop of a hat.

The Cressi Skorpion is a product of Italian design but don’t let that fool you; the blade’s made from quality Japanese steel. It comes with a sleek quick-release sheath that preps your knife in an instant and even includes a lanyard. Though it might take a minute or two to get used to the release sheath, once mastered, you’ve got a reliable companion by your side.


  • Quick-release Sheath: As quick as a mermaid’s hair flip. Great to have when every second counts.
  • Japanese Steel Blade: When you hear Japanese steel, think Samurai. This blade means business.
  • Durable and Reliable: It’s like the Ford F-150 of diving knives. It’ll serve you well and won’t quit on the job.
  • Italian Design: Nothing says class and quality like the word “Italian”. It’s the Ferrari of the scuba world.


  • The quick-release sheath mechanism may take a bit of time to get the hang of. It ain’t got the simplest of designs, folks!

4. Tusa FK-940ti X-Pert II – The Most Durable

Score 10 OUT OF 10
Tusa FK-940ti X-Pert II

When it comes to durability, the Tusa FK-940ti X-Pert II is up there with the best of them. This diving knife is built to last, making it a great companion for those who love exploring the deep blue sea. Made from 6-4 titanium, it resists corrosion and can take a beating without losing its edge. With a total length of 10 inches and a blade length of 4 inches, this knife is solid without being too bulky to handle. The materials and design make it a standout in the world of diving knives.

Let’s talk specifics. The Scubapro Mako Titanium measures 7 inches overall, with a 3-inch blade. This mid-sized knife is made of alpha titanium, which means it’s resistant to rust and corrosion, and can withstand the harsh conditions of the sea. Despite its compact size, this knife packs a punch in terms of performance.


  • Constructed with 6-4 Titanium, offering exceptional corrosion resistance. It fights off the rust like a champ!
  • Easy to clean and maintain. It’s got the convenience you didn’t know you needed!
  • Lightweight, making it easy to carry. This featherweight won’t weigh you down underwater!
  • Comes with ergonomic design features, like a non-slip grip and counterweight. It’s a comfy little cutter, folks!


  • While it packs a punch in the corrosion resistance department, it’s relatively expensive. Quality often comes with a price tag!

5. Atomic Aquatics Titanium Ti6 – Atomic Innovation

Score 9.2 OUT OF 10
Atomic Aquatics Titanium Ti6

A champ among the best dive knives is the Atomic Aquatics Titanium Ti6. It’s a medium-sized marvel that’s a sure bet for any recreational diver who needs to cut ropes and thin lines underwater. This baby has both style and substance, boasting a corrosion-resistant full-tang titanium blade and a smoothly curved 4-inch edge with both straight and serrated sides. Plus, it’s got a handy notch for slicing lines with ease.

The Atomic Aquatics Titanium Ti6 ticks all the boxes when it comes to specs and features. One of its standout features is the blade, which comes in both pointed and blunt tip options, giving divers a choice depending on their specific needs. The blade’s designed with a molded handle that has finger grooves, which ensures a firm grip, even when those slippery moments come a-knockin’. But what takes the cake is the titanium cap, which can be easily removed for cleaning, and a push-button release for swift access when duty calls.


  • Firstly, it’s built for recreational divers, with specs designed to dominate cutting rope and thin lines with ease.
  • It offers a full-tang titanium blade that scoffs at the idea of corrosion, keeping its edge sharp and ready.
  • You can choose your tip: pointed or blunt. Something to suit every folk’s fancy.
  • It sports a molded handle with finger grooves for a grip that won’t let you down when you need it the most.
  • Cleaning’s a breeze thanks to the removable titanium cap. Even your grandmother could disassemble it with ease.


  • The Atomic Aquatics Titanium Ti6 falls on the pricier end of best dive knives. A hefty price for a hefty product.
  • The handle might be too chunky for those with smaller hands, making it harder to maintain a tight grip.

6. Cressi Lima Tactical – Lima’s Express

Score 8.6 OUT OF 10
Cressi Lima Tactical

Hunting for that perfect dive knife that ticks all the boxes of durability, swift deployment, and practicality? The Cressi Lima Tactical springs to mind, a slick instrument that combines speed and strength for any underwater situation.

A well-crafted product with Italian design, the Cressi Lima Tactical Knife exhibits the high-quality features of Japanese steel. Its standout feature, a special release sheath, ensures this dive knife is ready to use in an instant. Coming equipped with a lanyard, it promises ease of use and uncompromised safety during a dive. It’s not just an ordinary addition to your dive kit, it’s a tool that empowers more than just underwater exploration.


  • Perfect for spearfishing with its quick and easy deployment
  • Made of high-quality Japanese steel, ensuring durability
  • Italian designed, which means you’re holding a piece of craftsmanship
  • Special quick-release sheath keeps your blade ready in an instant
  • Comes with a lanyard for convenient carrying


  • It could take some time to get used to the quick-release mechanism

7. Cressi Borg Stainless Steel Knife – The Borg’s Precision

Score 9.2 OUT OF 10
Cressi Borg Stainless Steel Knife

When talking about precision and length in a dive knife, the Cressi Borg Stainless Steel Knife is a cut above the rest. Whether it’s for cutting fishing nets or acting as a handy tool during spearfishing, this knife delivers.

A product of Italian craftsmanship, this diving knife is a long-lasting companion for any underwater venture. With a blade measuring 7 inches and an overall length of 11 inches, this knife is not for the faint-hearted. The blade boasts a dual edge – serrated on one side and smooth on the other, offering a versatile cutting tool. Its non-slip handle with finger molds ensures a firm grip even when things get a little bit slippery underwater. And let’s not forget the chromed knob at the handle bottom, doubles up as a handy mallet.


  • Blade’s sturdy, made of stainless steel and takes no prisoners under the water
  • Handle is built for a strong grip with finger molds, ensuring it stays put in your hand
  • Comes with a chromed knob, which can also be used as a mallet
  • Sheath is made of plastic material with easy elastic closure, for safe storage
  • Design includes loops and straps for attaching to your gear


  • The knife’s size can be a hindrance for some. With a blade measuring 7 inches and an overall length of 11 inches, it may feel a bit too bulky for some divers.
  • The weight is another aspect to consider. At 1 lb, it is certainly not the lightest option available on the market.

8. Spyderco Atlantic Salt – The Aqua Adventurer

Score 9.6 OUT OF 10
Spyderco Atlantic Salt

Alright, so you’re a water-loving adventurer looking for the perfect sidekick, right? Meet the Spyderco Atlantic Salt, otherwise known as the Aqua Adventurer. This guy’s got a reputation and let me tell you, it’s a well-deserved one. Made in Japan, this knife is the real deal when it comes to underwater action. It’s got everything a diver needs – rustproof, durable, easy to use, and even easy on the eyes. Yeah, this knife is no joke.

Now let’s talk turkey, or should I say, “tuna”? The Atlantic Salt measures a decent 9″ in length, and sports a 4″ blade. And we’re not just talking any old blade. This one is made of corrosion-proof H1 steel. Oh, and it’s got a fancy non-reflective TiCN black finish. How about that handle? Textured fiberglass-reinforced nylon, baby. Yeah, they weren’t messing around when they designed this piece of kit. Oh, and it comes with a cool multi-position G-Clip-equipped sheath. No big deal.


  • Compact and lightweight, making it convenient to carry around.
  • Extremely sharp blade crafted from rust-resistant H1 steel, which ensures durability and long-term performance.
  • The knife’s one-handed opening mechanism offers convenience and ease of use.


  • There is no mechanism to lock the knife down when closed, which can be an issue for some.

9. EEZYCUT Trilobite Webbing and Line – The Most Affordable

Score 10 OUT OF 10
EEZYCUT Trilobite Webbing and Line

Now, if you’re working with a tight budget, don’t worry, we’ve got you covered. Say hello to the EEZYCUT Trilobite. This little guy has made a big splash in the diving world. It’s efficient, compact, durable, and cheap as chips. Nothing fancy, but it gets the job done. It’s perfect for cutting line, thin ropes, and webbing. Plus, it comes in a range of eye-catching colors. What’s not to like?

So what’s the lowdown on the Trilobite? Well, it’s got two razor blades, one on either side. All you got to do is slot a forefinger through the hole and use the webbing as a ‘hilt’. Plus, it comes with two spare blades and a sheath. And did I mention it easily slices through all sorts of stuff? Yeah, this little beast is as simple and efficient as they come. So if you’re looking for a budget-friendly dive knife, the EEZYCUT Trilobite is your guy.


  • It offers a fine balance between durability and efficiency that would make even the toughest sea turtle salute. It can slice through line, thinner ropes, and webbing, dealing with a diameter of up to 8mm.
  • If you’re a fan of colors or have a favorite, the Eezycut Trilobite got you covered. The variety of colors available is as wide as the ocean itself, and includes glow-in-the-dark, high-vis and phosphorescence options for increased visibility underwater.
  • Double the blades, double the performance. Each Trilobite is outfitted with a pair of razor blades positioned on both sides, providing clean, quick cuts.
  • Now, this ain’t just a knife. The Eezycut Trilobite is a package deal that includes two spare blades and a sheath. And mind you, the sheath comes in different styles – a flexi pouch, a harness mount, and a wrist mount, to cater to your preferences.


  • Though the design is simple, it might require some getting used to before you become adept at using it.
  • If you’re someone who likes heavier gear, the Eezycut Trilobite might feel a bit light and flimsy in your hands.

A Look Into Knife Features and Types

Now that we’ve gone over the materials, let’s have a look at the different features and types of knives, shall we?

  • Dive Knife Types: Sharp Tip vs Blunt Tip Designs

When you’re choosing a dive knife, one of the first things you’ll notice is the different types of tips. Some knives have a sharp, pointed tip. These types are great for tasks where you need to puncture or slice something, like cutting lines or spear fishing. But, watch your hands because those points can cause some nasty accidents if you’re not careful. Then you got knives with a blunt tip. They’re great for prying things open or hammering. And the good thing is, they’re less likely to poke a hole in your gear or yourself. Also, remember that a diving knife is not just about the blade. The handle and the attachment method, like rubber straps for leg attachment, are just as important. So, choose your blade wisely, but don’t forget about the rest of the knife.

  • Diving Knife Material Considerations: Stainless Steel vs Titanium

When it comes to deciding between a stainless steel or titanium dive knife, you gotta consider the pros and cons of each material. Both materials are highly favored for scuba gear due to their natural corrosion resistance. Especially important when you’re plunging into salty oceans for hours at a time. Now, stainless steel, it’s a softer metal. This means you can sharpen that blade edge real quick. The only downside is the steel knife will dull a bit quicker and ain’t quite as rust-proof. But hey, they’re usually lighter on your wallet.

Now, let’s talk titanium. It’s lightweight, which is always good when you’re lugging around a ton of gear. It’s also stronger than stainless steel. You won’t have to sharpen it that often, but when you do, it’s gonna take a bit more elbow grease. Titanium knives can be a bit pricier, but remember, you’re paying for that strength and longevity. One particular perk is the use of titanium alloy in some knives. These alloys are even more corrosion-resistant and hard-wearing. So, titanium or stainless steel? Depends on your needs and your budget, mate.

  • The Role of Line Cutting Notches

In the world of diving, having a knife with a line-cutting notch can be a game changer. These notches, they’re designed to make cutting through various materials easier. Sounds simple, right? But when you’re underwater and dealing with everything from plastic trimmer lines to thick rope, it’s a real lifesaver. A knife with a good line-cutting notch can slice through these materials in a single pass. No fuss, no mess.

  • The Impact of Handle Designs

Now, you can’t ignore the handle when you’re choosing a dive knife. You might think it’s all about the blade, but trust me, the handle’s just as important. Some knives even have a protruding bit of metal sticking out the base of the handle. This metal extension can sometimes double up as a tank banger, a handy tool to get someone’s attention underwater.

  • The Mystery of Black Blades

Ever noticed those dive knives with black blades? Makes ’em look kinda cool and mysterious, right? Well, there’s a reason behind it. You see, black blades are coated to enhance their durability and corrosion resistance. It ain’t just about looking slick! But there’s more to a good dive knife than a pretty face.

How to Best Attach a Dive Knife

Alright, you’ve picked out your perfect dive knife. Now what? Well, now you gotta figure out how to attach it. See, attaching your dive knife properly is crucial. Specially when you’re tumbling around in the water. You don’t want it interfering with your other scuba gear, or worse, losing it altogether. Attaching it properly keeps it within reach without becoming a hindrance.

Some divers prefer to attach it to their leg, while others opt for a BCD attachment. There ain’t a right or wrong choice here, it’s all about personal preference. The important thing is to make sure it’s secure, accessible, and comfortable. After all, a dive knife is more than just a tool – it’s a lifeline when you’re exploring the underwater world.

Preference for Leg Attachment

Some folks prefer to strap the knife to their leg. It’s a classic move, right out of an action movie. Quick, easily accessible, and undoubtedly cool. But on the flip side, this kind of attachment can sometimes be a bit of a hazard. You might find yourself caught in the underbrush or entangled in something you didn’t bargain for. But hey! If this sounds like a risk you’re willing to take for the sake of convenience and a dash of adventure, then leg attachment might be your style.

Opting for BCD Attachment

Now, for the BCD attachment. It’s another way to strap the knife, just not on the leg, which some divers find to be a safer alternative. With a BCD attachment, the risk of getting caught in something down there is significantly reduced. That’s a tick in the ‘safety’ box. But, then again, ease of access might not be as quick as with the leg attachment. However, if safety trumps speed for you while under water, then a BCD attachment could be your best bet.

Frequently Asked Questions on Diving Knives

Diving knives – the unsung heroes of any dive. They’re not just there to make you look cool, they’re actual lifesavers, you know. Well, unless you get the cheap ones. So, let’s jump into some frequently asked questions about these bad boys, from the reliable Cressi Skorpion to the hardened titanium models such as Promate Titanium Scuba and Tusa FK-940ti X-Pert, let’s get you in the loop.

1. What should i consider when buying a dive knife?

So you’re thinking about buying a dive knife, huh? First off, you gotta know what you’re getting into. Dive knives can be different in design and material, each one with its own pros and cons. Basically, they’re specialized tools for folks who spend a lot of time in the water. You’ve got to consider how the knife will perform underwater, the risks it could pose, and most importantly, how reliable it is when you need it most. After all, we’re not just talking about any tool here, this one could literally be a lifeline in a pinch.

Maintaining a dive knife isn’t rocket science, but it ain’t child’s play either. The trick is to remember that just like any other tool used in the water, it needs some TLC to keep it in top shape. You’ve got to keep it clean, particularly if you’re using it in salt water. A good rinse and dry after every dive is a must. And speaking of drying, make sure there’s no moisture left before storing the knife away. Even the smallest amount of water can lead to rusting, which is the last thing you want.

Now let’s talk about brands. Everybody’s got their favorite, but when it comes to dive knives, there are a few names that stand out. Just like your essential scuba gear, your diving knife should be of top-notch quality, and that’s where the big brands come into play. Whether it’s a stainless steel knife or a rust-resistant titanium one, do your research, read some reviews, and get the best you can afford. Remember, in the deep blue sea, your diving knife isn’t just a tool, it’s a lifeline.


The best dive knife comes equipped with a lock mechanism for safety and a good grip handle, ensuring you don’t lose it while wrestling with a grouper, or worse, a shark! A solid example would be the Spyderco Atlantic Salt with its compact design. This thing is able to take on just about anything the ocean can throw at you. The Cressi Borg also deserves a shout-out with its titanium pocket clip, letting you keep it secure and within easy reach. But remember, a diving knife is not just a puncturing and cutting tool. It can serve as a screwdriver, pry bar or even help signal your dive buddy. Imagine being able to cut plastics and other potential hazards effortlessly. That’s what you get when your diving knife is attached to your BCD and ready to go. Boy, that’s some handy gear!

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