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Knife Supremacy

3 Great Uses for Bringing a Knife on Your Dive Trip

Alright the chances of you being like James Bond and needing a dive knife to fight underwater is like .00000001% chance… besides that there are many reasons you should have a dive knife.

Diving is a lot of fun, and it is quite the adventure, you just never know what you may see or find. You can check out some interesting & cool dive stories here.

Anyways, I like to think that it is important to bring a knife with you on your diving trip because they can serve many purposes for you. And you can read more here about bring dive knives on your next dive trip.

Dive knives serve many purposes, some ranging from utility to survival, and whatever it may be, I find that it is useful to bring a knife with you that can get the job done. It’s almost like Murphy’s Law… whatever can go wrong, will go wrong.

Although we would like to think that nothing will go wrong, it is imperative to be ready for any situation that may come at bay.

The 3 Main Reasons to Have a Dive Knife

1. Cut Through Cords and Lines

If you don’t believe me that you cannot get caught in mono-filament lines or cords then you need to read this article by Scuba Diving. (They also explain how you can escape from entanglement)

Anyways, it is dangerous to be caught in cords or lines because this can cause mechanical injury to yourself, damage equipment if you fight through the cords/lines, losing your equipment (in case you have to ditch your equipment, although this is last resort) or very rarely it can lead to death. (very rare, but can happen)

Luckily with a dive knife you would be able to cut through the cords, but you have to be careful how you cut and how hard you cut, because one wrong pull could lead to you cutting yourself. Although as long as you are safe and cut through the line/cord efficiently then you should be good.

But bringing a dive knife is important especially for slicing through cords, lines and the infamous sea kelp/weed…

2. Survival Reasons – Shark Fight

Ha. The odds of this happening is very, very, very, slim but you never know. Or you may come across some underwater creature that is disgruntled… I don’t know but it can happen. Now I am not advocating to kill animals by any means, but you never know what can happen.

This is an interesting read about a New Zealand doctor who fought off a shark with a knife… so you never know what can happen always good to be prepared.

This is off topic, but here is an octopus trying to steal a camera… haha

Back to the topic… you could also face having to cut through rope/cords/lines (as mentioned above). As mentioned though, the odds of you having to use your knife for survival reasons is very slim, but you never know.

3. Freeing Entrapped Aquatic Animals

Haven’t you ever wanted to save an aquatic animal? You could be the hero to that animal and potentially that person you are wanting to impress. ha. Imagine how good you would look if you saved a fish from being caught in something.

But more importantly besides looking good to your friends or person of interest, you also would feel good about yourself with doing the right thing for saving an aquatic animal with your dive knife. I mean think about it, you could really do that animal some good and allow it to see another day.

Be cool, be great, be a hero, have the best dive knife and save an aquatic animal.

Key Takeaways of Having a Dive Knife

  1. Cut through cords, lines and the infamous seaweed/kelp
  2. Survival reasons
  3. Freeing entrapped aquatic animals

A Few Things to Keep in Mind for Choosing a Dive Knife

You can click here for more info on the best dive knife.

We have all seen the huge knives you can bring while diving, however these are unneeded and to be honest, get in the way because of the size. Some people don’t like bringing knives because they think it makes them look like a savage… so keep in mind these few tips that we are going to share about picking your next dive knife.

1. Size is NOT Everything

We prefer small dive knives because they are easier to hold (especially for beginners) and can fit in smaller areas and also don’t take up as much room.

On top of that, if you won’t have to worry about looking like a savage or under water hunter because it will be smaller.

Lastly though, Smaller knives can still be extremely sharp and useful compared to its counterparts of the 6-8 inch dive knives. So keep in mind that dive knives do NOT have to be big.

2. Utility is King

The chances of you using a dive knife for survival reasons is pretty slim… so keep in mind that when choosing a dive knife you will want it primarily for utility purposes.

Keep in mind that it should be able to cut through just about anything. On top of that, you want to be able to pry something open with it, or use it as a screwdriver as well (aka choosing a blunt tip knife, I will explain more later.)

3. Serrated vs. Plain Edge?

We HIGHLY recommend that you pick up a serrated blade, or a hybrid of mainly serrated with some plain edge. The reason being, is that you will mainly use your dive knife for chewing through cords, rope, line, or seaweed/kelp.

Serrated edges work way, way, way better for cutting through cords & what not compared to the plain edge.

4. Sharp Tip or Blunt Tip?

Most likely you will want a blunt tip dive knife (unless you are a seasoned veteran) but even then you will want a blunt tip, because with a sharp tip you run the risk of puncturing your tank or poking yourself.

Also blunt tips work much better for prying something open, while a sharp tip will break if you pry with it. Think of a blunt tip knife as a screwdriver.

5. To be Sheathed or Not to be Sheathed?

Definitely want it to be sheathed. This will prevent it from being lost, getting in the way and also is more easy to access. If you are having to pull your knife out of some case or bag then it is no good, because that cuts down on time, energy and patience.

6. Steel Vs. Titanium?

Steel Knives

Much easier to sharpen, holds a sharper edge but you run the factor of it rusting. Which a rusty blade is definitely unsafe, however if you maintain it well and know how to sharpen your knife properly then you will be fine. Just make sure to maintain and sharpen your knife accordingly and regularly.

Titanium Knives

Very high resistance to rusting, which is a major benefit because you are going to be underwater with your dive knife. Titanium knives are not as susceptible to oxidation and rust factors… however they are a major pain in the tookus to sharpen and don’t hold an edge as well.

We Choose Titanium Over Steel

The reasons being is because you don’t run a major risk of your knife rusting… and as long as you learn how to sharpen your knife properly then titanium won’t be a big issue. Although this can go either way, which you can let us know in the comment section below which you prefer.

You can read here for more info on some awesome dive knives.

Important Tips to Follow When Choosing a Dive Knife

  1. Size is not everything, smaller = better (at least 3 inches though would be good)
  2. Utility is king 
  3. Serrated is better
  4. Blunt tips are great
  5. Sheaths are a must
  6. Titanium > Steel (barely)

And there you have it, the 3 main reasons you should bring an knife with you on your next diving trip. Along with the top 6 tips for choosing a dive knife. If you guys have any tips or suggestions then let us know in the comment section below!

Till next time!

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