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How To Choose The Best Dive Knives

A good quality diving knife is essential for anyone who spends much time underwater. These tools are used by professional divers as well as recreational ones, but they also come in handy for other tasks around the house.

What Are Dive Knives?

Dive knives are small tools that are used for cutting through thick objects underwater. They are made of stainless steel and feature serrated edges, making them ideal for cutting through coral reefs and rocks. Dive knives come in many different sizes and shapes, but most commonly include a blade attached to a handle. The blades are typically between 3 and 6 inches long, while the handles vary in length depending on what type of diving equipment the tool will be used with. Most dive knives are sold separately from the equipment they were intended to work with, although some manufacturers offer kits that contain both the knife and its corresponding equipment.

Who Needs Dive Knives?

Dive knives are essential tools for any diver. They're designed to cut through thick gloves and wet suits. But, did you know that they're also useful for other things?

They're perfect for cutting rope, removing splinters, opening packages, and getting rid of stubborn knots. Dive knives are made from stainless steel, which makes them durable and corrosion resistant. They're also lightweight, which makes them ideal for carrying around while diving.

But, do you really need one? Not necessarily. However, if you plan on doing a lot of underwater activities, then you definitely should invest in a quality dive knife. Here are three reasons why.

When it comes to safety, nothing beats a quality dive knife. When using a cheap knife, you run the risk of injuring yourself. Even worse, you could injure someone else. So, if you're planning on going deep sea diving, then you absolutely must invest in a quality dive knife.

Ropes aren't only found on land. Many ropes are also used underwater. These ropes are usually made from synthetic materials, but they still require regular maintenance. To remove these ropes, you'll need a tool specifically designed for this purpose. A quality dive knife can easily cut through most types of rope.

Splinters are common among divers. They occur when you accidentally poke a piece of wood or metal into your skin. While you can use soap and water to clean away the splinter, it's better to take action sooner rather than later. A quality dive knife can quickly remove splinters from your hands.

No matter how you decide to use your new dive knife, you'll be glad you invested in a quality product.

Do you have questions about buying a dive knife? Let us know in the comments below!

He currently works as a content manager at Divers Supply & Gear. His areas of expertise include customer service, SEO, and social media marketing.

The Importance Of Purchasing Quality Dive Knives

Dive knives are essential tools used by professional divers who work underwater. They are designed to withstand harsh conditions such as saltwater, pressure, and extreme temperatures. When buying a dive knife, it's important to purchase one that is durable and reliable. Here are some things to keep in mind when selecting a quality dive knife:

Look for a blade that is forged rather than stamped. Forged blades are stronger and have sharper edges. A forged blade will hold up better under rough use. You'll find forged blades are typically less expensive than stamped blades.

Look for a blade that is corrosion resistant. Corrosion resistance is especially important if you plan on storing your knife in saltwater. Look for a blade that contains stainless steel or titanium instead of brass or aluminum.

Look for a blade that is heat treated. Heat treatment strengthens the metal so that it won't break easily. This makes the blade easier to sharpen.

Look for a blade that is easy to clean. Cleaning a knife properly is very important. Make sure the blade is free of rust and dirt before sharpening it.

Look for a handle that is ergonomic. An ergonomic handle allows you to grip the knife more securely. Ergonomics also reduces hand fatigue.

Look for a blade that is lightweight. Lightweight blades weigh less and take up less space in your gear bag. Lighter blades are easier to carry and maneuver.

Look for a blade that is easy to open. Blades that are difficult to open may slip out of your hands when diving. Look for a blade that opens smoothly and quickly.

Look for a blade that is comfortable to hold. Comfort is extremely important when holding a knife underwater. Look for a blade that feels natural in your hands.

Features To Consider When Buying Dive Knives

Blade length. The longer the blade, the more control you have over the tool. Longer blades give you greater reach and flexibility, while shorter blades allow you to work closer to the surface.

Weight. Weight matters when using a diving knife. Heavy tools tend to slip off surfaces and become difficult to hold onto. Lightweight tools are easier to handle and maneuver.

Handle design. Handle designs range from simple straight handles to curved handles. Straight handles are easier to grip and less slippery than curved ones. Curved handles are great for cutting through thick materials, but they may be harder to hold onto.

Stainless steel vs. carbon steel. Stainless steel is stronger than carbon steel, but it doesn't rust. Carbon steel tends to rust if exposed to moisture, so stainless steel is recommended for underwater use. However, both types of steel are strong enough to cut through most materials.

Size. Diving knives come in many sizes. Smaller models are ideal for smaller hands, while larger models are perfect for bigger hands. Larger knives are usually heavier, though.

Comfort. Comfort is important when using a diving knife. Some users prefer the weight of their tools, while others enjoy lighter weights. Others love the comfort of having a comfortable handle. Choose a model that feels right for you.

Design. There are several styles of diving knives available. Fixed blades are useful for cutting through hard objects, while folding knives are handy for opening packages and other tasks. Folding knives are also safer than fixed blades, since they are easier to store.

Material. Most diving knives are made of either stainless steel or carbon steel. Both metals are durable and strong, but stainless steel is typically preferred due to its corrosion resistance. Carbon steel is used for its strength and durability.

Finish. Finishes range from matte black to bright polished finishes. Matte finishes are easier to clean, while shiny finishes are more resistant to scratches.

Different Types Of Dive Knives

They are used to cut through various materials including rope, metal, plastic, wood, and coral. They are also useful for cutting through muck and mud. Dive knives come in many shapes and sizes. Here we will look at some of the main types of dive knives.

Fixed Blade Knives. Fixed blade knives are the most basic diving knife. They consist of two blades connected by a handle. One side is flat and the other curved. When closed, the blades meet at a point. A fixed blade knife is good for cutting through small objects. It is also good for scraping off barnacles and algae. Because of its shape, it is not recommended for cutting through large items.

Hollow Handle Knives. Hollow handle knives are slightly larger than fixed blade knives. They are also known as folding knives. They fold up into a compact size making them easy to transport. dive knives are also good for cutting through ropes and other materials. Their handles are hollowed out allowing them to hold more material.

Bamboo Knife. Bamboo knives are made from bamboo. They are lightweight and flexible. dive knives are also strong enough to cut through almost anything. They are less likely to break than steel knives. These are also inexpensive. Unfortunately, they are also brittle. They are therefore not suitable for use underwater.

Surgical Knife. Surgical knives are used for surgery. They are sharpened to a fine edge. dive knives are also good for cutting through bone. They are also quite heavy. These are not recommended for use underwater.


Highland by XS Scuba Stainless Steel Pony Mount

  • Mount on the diver’s right or left side
  • Mount upright or upside-down
  • Secure and stable attachment
  • Easy attachment with stainless steel cam buckle
  • No hose clamps

Atomic Aquatics SS1 Safe Second Stage Inflator Octo Octopus for Scuba Diving Dive BC BCD Divers, Yellow

  • Atomic Aquatics SS1 Safe Second Stage Inflator Octo Octopus for Scuba Diving
  • The SS1 breathes just like a primary
  • Atomic engineers a new level of performance into safe seconds.
  • The SS1 delivers high flow rates to a diver at depth with a minimum of effort
  • House of Scuba is an authorized Atomic Aquatics dealer.

Scuba Choice Scuba Diving Compact Black Stainless Steel Blunt Tip BCD Knife

  • 420 Stainless Steel
  • 2.3" Blade
  • Total length: 7"
  • Moulded nylon grip for comfort

Cressi Ultraspan Camo, 2.5mm, S

  • The soft and flexible elastic fabric gives complete movement of the fingers during use. The thickness of the 2.5 mm fabric ensures warm hands.
  • Camouflage effect cover in Cressi's Tecnica pattern.
  • Anti-slip dots on fingers give these gloves a secure grip.
  • Suitable for activities such as scuba diving and spearfishing.
  • The Ultraspan gloves are designed in Italy by Cressi and made in Cambodia. Cressi is a brand pioneer in Spearfishing, Freediving and Scuba Diving equipment since 1946.

Cressi Borg, Grey, Pointed Tip

  • The Borg is a modern, large knife with a futuristic design and a strong, tempered blade made of 304 Japanese stainless steel.
  • One side of the stainless steel blade is straight-edged, the other one is serrated right along the blade; they are both very sharp and effective for line cutting.
  • The handle has an ergonomic design to ensure a secure grip even wearing gloves. It is separated from the blade by a small technopolymer thumb tab.
  • The knife comes with a sheath that features a locking mechanism to allow one-hand release. The sheath comes with two, standard issue straps to attach it to your leg.
  • Total length: 10.43 in (265 mm). Blade length: 5.51 in (140 mm).
  • The Borg is designed in Italy by Cressi and made in Taiwan. Cressi has been an Italian brand pioneer in scuba diving, snorkeling, and swimming equipment since 1946.
  • Sport type: Outdoor Lifestyle

Cressi Hunter Rash Guard, camo blue, L

  • The Hunter is a camouflage rash guard made with strong and elastic synthetic fabric, ideal for scuba diving videomakers and spearfishermen.
  • The main feature of the rash guard is that protects from wind and from UPF Ultraviolet rays that are harmful to the skin.
  • The material is elastic and easily adapts to the shape of the body. It should dress tightly, but must not tighten, so can keep warm. If worn under a Neoprene wetsuit the ability to keep warm is increased.
  • Can be worn over a solid color wetsuit to use the camouflage effect, or over wetsuit that does not have a chest loading pad.
  • The chest is seamless and features a soft durable pad that protects the body. Essential for loading the speargun. The rash guard is made of 80% nylon and 20% spandex thick 190 g/m2. Made with anatomical cuts and can be worn in any water sports.

Mares Viper Mask

  • The product's latest-generation silicones deter condensation
  • Ergonomic buckles with double buttons on the skirt enable the strap to be adjusted precisely
  • Developed in partnership with the best athletes in the world
  • Dedicated to the most demanding free divers and spear fishermen
  • The skirt has been modeled with meticulous attention to facial ergonomics, making it suitable for all types of physiognomy dedicated to the most demanding free divers and spear fishermen

Oceanic Hera BC, W/QLR4 (SM)

  • Designed specifically for women divers
  • Patented Adjustable Positioning System (A.P.S.) Track
  • Adjustable depth-compensating cummerbund
  • Pre-bent welded stainless steel D-rings, reinforced contoured shoulders
  • QLR4 Integrated Weight System 20 lbs plus dual 5 lbs rear

Cressi Lima, Lime

  • The Lima is a great emergency knife for scuba diving and a very desirable knife for the spear fisherman. It is very small and compact. This allows it to be conveniently attached to the diver's gear.
  • The blade is made of Japanese stainless steel 304, very resistant to the salt Sea water. The knife is long 6. 3 in (160 mm) and the blade 2. 44 in (62 mm).
  • One-hand release sheath mechanism. Back clip for attaching it to the BCD strap or to the weight belt. Hose holder available allowing to attach the sheath to the BCD hose that makes the knife really easy to extract.
  • A lanyard is included in the package that can be used to secure the knife to the sheath.
  • It's Important to remember a knife as it can be essential to have in emergencies, such as you or your buddy becoming entangled in rope, fishing line, or a net, the knife is there to cut you free.
  • The Lima is designed in Italy by Cressi and made in Taiwan. Cressi is an Italian brand pioneer in scuba diving, snorkeling and swimming equipment since 1946.

Cressi Skorpion, Lime

  • Skorpion is a modern knife of the latest generation design and medium dimensions, with a resistant tempered blade of tempered AISI 304 steel, with a smooth edge and a serrated edge with a wire cutter incorporated.
  • The Skorpion is available in two different blades: pointed tip and blunt tip. The blade is long 4 3/8 in (11 cm). The total knife length is 9 1/8 in (23.20 cm)
  • One side of the stainless steel blade is straight-edged, the other one is serrated right along the blade; they are both very sharp and effective for line cutting. It is separated from the blade by a small technopolymer thumb tab.
  • The knife comes with a sheath that features a locking mechanism to allow one-hand release. The sheath comes with two, standard issue straps to attach it to your leg.
  • The Skorpion is designed in Italy by Cressi and made in Taiwan. Cressi has been an Italian brand pioneer in Spearfishing, Freediving, and Scuba Diving since 1946.

Cressi Liberty, Black/Black

  • Mask features a wide, unobstructed field of vision thanks to the one large lens. Lens made of tempered glass for safety.
  • Skirt made of hypoallergenic soft silicone, anatomically designed, for ensure a perfect seal.
  • Equipped with easy-to-use buckles for immediate length strap adjustment.
  • Easy-to-reach, one-hand nose pocket for ear equalization usable even when wearing thick gloves.
  • The exclusive painted, coated frame brings a cool tech design style. Made in Taiwan.

Cressi Grip Blunt Black, 6.8 Inch

  • Grip Blunt Tip is a small-sized knife with a blunt tip and two different types of blades for multi-use. Ideal for scuba diving as a primary or back up knife.
  • The blade is made in Japanese Stainless Steel that stays sharp, even after extended use.
  • One side is an extra rigid serrated blade for sawing, the other side is a skillfully crafted straight blade.
  • It features an ergonomic non-slip handle grip and a hole to add a lanyard (not included).
  • The knife comes with a sheath that can be attached to the BCD shoulder strap or the inflator hose.
  • The sheath has a locking mechanism that prevents the knife from falling out.
  • Two Velcro BC mount straps (long 2 in | 5 cm) and a hose mount are included in the package.
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