Decryption diving knife selection and use

There is a dive gear that you may not be able to use for a lifetime, but once you have used it once in your lifetime, it will be enough to save your life. This equipment is said - diving knife.

The choice of diving is only a brand-new way of travel. However, the selection of a series of related equipment is the key to the quality of snorkeling and the safety of life. In the history of diving both at home and abroad, the danger of underwater entanglement has also occurred from time to time. Unfortunately, in addition to technical divers, we have not seen the appearance of diving knives in most recreational diving activities like other devices, but if you are a serious and rigorously qualified diver, you will find PADI. The introduction of the diving knives in the contents of "Scuba Diving Equipment" in the textbook. Being included in the textbook together with reloading and light fitting is enough to reflect its importance. In addition, out of the protection of marine life, when divers see trapped creatures, it is of course indispensible

structure:

Diving knives are different from traditional knives because of the use environment and the way they are used. What kind of diving knives is an underwater equipment that can play a life-saving role in critical moments? The following points are important:

Blade:

The degree of sharpness of the blade depends primarily on the angle of the blade. The smaller the angle, the sharper it will be. However, this small angle implies the fragility of the blade. Just like a single-edged razor in a barber's shop, every scratch of a beard requires a few clicks on the knife, because the hardness of the beard is enough to make it thin. Blade deflected. There are a lot of really working knives that have a balance between sharpness and retention. Many knives are polished to increase the angle of the cross section of the blade - this will of course reduce its sharpness, but it will also Improve the retention of its edge. Like the tools used in the field, the retention of the blade of the diving knife and the solidity brought by the large angle are more important than the sharpness! This is the reason why the blade of the diving knife has to be frustrated with respect to the tools used daily.

In addition to the conventional straight edge, the design of the blade body should be a serrated blade on the other side. Mainly to more easily cut off the texture of a more rigid object. The best quality diving knife design can be seen in the gap on the knife body below. It will make it easier for you to cut the windings at an emergency. A diving knife that can meet three cutting needs at the same time is your first choice.

Blade head:

There are two kinds of tip and tip. In addition to the cutting function, the pointed diving knife also has functions such as excavation and detection; the flat head is not easy to break off and can also better protect the BCD.

Tool holder:

Looking at the shank, there are only two points: First, whether the body is integrated into the shank part is the most secure process. The second is that the handle should have a non-slip design. The best grip design should also have a four-finger ergonomic design. Comfort and stress at the same time.

scabbard:

The scabbard design of the diving knife as long as the safety buckle is not easy to fall off, easy to use one hand to remove and retract. In addition, it is also very important to work with the scabbard to fix the strap. The scabbard bandage should be flexible so that the wetsuit is not loose when compressed. The diving knife can only be carried and picked up only when used with a strap.

There are two kinds of stainless steel and titanium alloys on the market.

First to popularize about stainless steel. We always hear 340, 330, 400... these labels. But what does it mean? The higher the parameter, the better? Also, when stainless steel is used on a tool, its label has two meanings: When its number is higher, its higher carbon content is more likely to corrode. On the contrary, the lower the number, the easier it is to become blunt. Simply put: The sharper the blade, the easier it is to rust. To achieve a good balance between corrosion resistance and sharpness of the blade.

Therefore, titanium alloy is the best diving knife material. Since it does not contain charcoal, there is no problem of rusting from purchase until you lose it, and the effect of resistance to sea rust is excellent. In addition, there is a very outstanding characteristic of titanium alloy is: light!

Use of diving knives

Diving knife must be equipped

Fixed sheath scalpels must have a scabbard that can be attached to your equipment or body. The scabbard must secure the dive knife securely, but at the same time allow you to remove and retract the dive knife with one hand. Some scabbards have straps that allow you to attach to your legs.

Advanced equipment

Keep sharp on the softer steel it is easy to sharpen the sharp edge but it is easy to become blunt. You don't want to often grind your scuba knife, so harder steel is a better choice.

Metallic handles larger scuba knives sometimes use the metal handle as a tweezers. This will come in handy when you want to call a dive buddy and you can hit his head with a knife handle... Abu, tap your gas bottle to attract attention. This feature is less common on small knives because it is too small to be tapped.

Diving knife optional

Special-purpose diving knife Z knife (also known as zip knife) has a hook-type knife peak is particularly suitable for cutting the string. Shipwrecks diver shipwreck divers and cave divers usually carry a Z-type knife in addition to the large diving diver.

Diving knife that is not a knife

Diving tools and special scuba diving scissors are now more and more common. Not only are they more secure to use, they also have more features and are less susceptible to legal restrictions.

Titanium Most diving knives are made of stainless steel, but "stainless" may only mean "not rusting." They may only be slightly better than pig iron soaked in sulfuric acid. Even stainless steel can rust, but titanium can be eternal, though expensive, or until you lose it.

How to choose a diving knife - Your preference will determine your choice of diving knife

If you travel often, a small diving knife or scissors will be your best choice. They are not likely to cause legal problems (tools are pipe products in certain areas) and will not increase baggage weight.

Wreck divers and cave divers usually carry more than one diver.

When choosing a diving knife, first consider the position you want to wear, and sometimes this will determine which knife you should buy.

Dive knife reminder

When traveling by plane, do not leave your diving knife in your carry-on baggage. Do not doubt that this often happens.

Diving knife is not a weapon. It is an important safety equipment. Although you don't intend to use it as a weapon, you are not careful enough to hurt others. Please take responsibility for owning and using it and take care to keep it away from children.