A Complete Guide to Finding the Best Scuba Diving Knife

A Complete Guide to Finding the Best Scuba Diving Knife

Hello, scuba diving enthusiasts! What we have for you is a detailed guide on finding the best scuba diving knife. Whether you’ve been exploring caves, reefs, and magnificent depths of waters for years, or you’re new to scuba diving, you’ll need a diving knife, and we might just be able to help you find a perfect one.

What Is a Diving Knife Used for?

A diving knife is an essential piece of scuba diving equipment that most scuba divers use. What you should know though is that a diving knife is not like all the other knives: it’s a tool, and not a weapon. With this practical tool you can do a lot of things that will ensure you stay safe underwater and also get the best out of your scuba diving experience.

Situations in which you might need a diving knife:

  • Untangling from fishing lines and thick underwater vegetation
  • Saving species caught in any type of obstacle they can’t get out of (most commonly fishing lines)
  • Anchoring yourself in the sand if the current is too strong
  • Communicating with your diving crew by knocking on their tanks with a handle of a diving knife
  • Spearfishing

Types of Diving Knives

Dive Knife Materials

Diving knives are typically made of either stainless steel or titanium. To help you choose between these two materials, we’ll give you some more information about each of them, as well as present you with some of their pros and cons.

  • Stainless steel dive knives: As the name suggests, these diving knives are made of stainless steel – either from 300 series or 400 series stainless steel. If marked as 300 series a dive knife is not magnetic, while a 400 series stainless steel label indicates that a diving knife doesn’t contain nickel and that it is magnetic. Both stainless grade families have their advantages. 300 series is more resistant to corrosion, but it also requires more frequent sharpening. On the other hand, 400 series will stay sharp for a longer period of time, but at the same time, it isn’t as corrosion-resistant as 300 series stainless steel knives.

When compared to titanium diving knives, stainless steel diving knives are less expensive, and they serve their purpose really well.

  • Titanium dive knives: These dive knives are very lightweight, and much like 300 series stainless steel dive knives quite resistant to corrosion. They stay sharp much longer than stainless steel diving knives, and require very little maintenance.

Dive Knife Shape

When it comes to different shapes of diving knives, there are two things you should pay attention to: the tip of a diving knife, and its edges.

  • A diving knife tip can be blunt or pointed. Dive knives with a pointed tip are typically used for spearfishing, but they can accidentally damage diving gear or cause accidental cuts if not handled with caution. Blunt-pointed scuba knives are safer to carry around, and they serve their purpose just fine.
  • A diving knife edge can be serrated or straight. Diving knives with a serrated edge are more commonly used due to the fact that they stay sharper for a longer period of time than knives with a straight edge, and they can also cut through some really tough objects. However, scuba knives with a serrated edge are more difficult to both sharpen and clean. So, if you want a dive knife that is easier to maintain your choice should be a dive knife with a straight edge.

If you feel you’ve made too many decisions so far, there’re also scuba knives that come with both edges: serrated and straight 🙂

Dive Knife Size: Blade and Grip

When it comes to size of a diving knife blade, most scuba divers use medium-sized blades that are between 4 and 6 inches long. Small scuba knife blades go from 2 to 4 inches, and large dive knife blades are 6 inches and longer.

Scuba knives with a large blade are more difficult to maneuver, and the same can be said for small blade knives if their handle is not big enough. As mentioned before, knives with medium-sized blades are the most common choice of scuba divers as they are easy to handle, and they don’t take up too much space.

A diving knife handle (grip) is another important criterion you should consider when looking for the best scuba diving knife. The most common recommendation from experienced scuba divers is to find a dive knife that has a blade and handle of nearly the same size. A dive knife handle itself can be metal or coated with different materials such as rubber or synthetic. Whichever you choose, it’s essential that a scuba knife feels comfortable in your hand, and also that you can easily get a grip of the knife’s grip.

Dive Knife Storage

Another thing to consider when buying the best diving knife is how you will store this handy scuba diving tool. Here, you have two options: you can either choose a folding dive knife or keep your knife in a sheath.

If you decide to get a folding dive knife, you will choose one of two almost equally practical options. However, because folding knives are sometimes very tricky to open, before you make the final decision you should also imagine a scenario in which you’re wearing your diving gloves and trying to access your folding scuba knife.

If you decide to keep your dive knife in a sheath, you will have the option of attaching the sheath to your leg (that is opposite to your dominant hand) or to your BC. Make sure you choose a sheath that has all mountable options, as well as a quick-release button. The latter will keep the knife secure in its place, and provide easy access to it when the quick-release button is pressed.

In conclusion, we’ve searched the web to find the characteristics of the best scuba diving knife, and here’s what we’ve discovered.

Categorized under “Best Diving Gear”, scuba diving knives voted as best based on their functionality, durability, and the level of comfort they provide have the following features: 1) they are made of titanium (or titanium alloy), 2) have a blunt tip 3) and a double edge (both serrated and straight), 4) they have a 5 inch long blade, and are about 10 inches long including a handle which is coated with rubber, 6) they come in a sheath, and have all mountable options available.

We hope this guide will help you find the best scuba diving knife for your underwater adventures whether you’re a beginner or an advanced scuba diver.

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