When Do You Need a Dive Knife?

A dive knife is something you can’t afford to be indifferent about; it can potentially harm your dive buddy or yourself. To make the best use of it, identify situations where its presence is essential, like you’re swimming in an area where there are a lot of obstructions (seaweed, undersea wires, etc) then contemplate if your next dive will have those scenarios.


Here are common situations where you have to bring your dive knife with you.

Diving on a Wreck

When you go diving in an undersea wreck, your knife may prove useful if pieces of wreckage slide and block your way.

Scuba Gear Failure

In case your scuba diving gear malfunctions and you find it hard to open your weight belt buckle, you need a dive knife to cut the equipment away, free yourself, and ascend. Though this situation seldom happens, it pays to be prepared all the time.

Means of Communication

A knife is an effective tool in getting your buddy’s attention. You just have to bang it on your tank. Getting attention can be difficult underwater especially if your buddy is engrossed with what he is doing. With your dive knife, you don’t need to swim towards his direction anymore.

Swimming in a Site Covered with Old Fishing Lines

It would be hard to free yourself if ever you get entangled in a network of old fishing lines using just your bare hands. With a dive knife though, you can free yourself easily.

Diving in Sites You Are Not Familiar With

Some divers are naturally adventurous and find diving repeatedly in the same site boring. If you are one of these enthusiasts who love to explore new diving sites, a knife is a useful item in case you face problems. You’ll never know what predicaments you might find yourself in in strange waters.

Extra Tip: When Not to Use a Dive Knife

There are instances where you don’t need to carry a dive knife with you. Swimming in shallow waters devoid of obstructions (cables, coral formations, etc) for example, qualifies. In situations like this, carrying a dive knife would be unnecessary; the thing will just add up to the total weight of the gear you’re carrying. There’s also the matter of it being an edged instrument. You can inadvertently injure yourself or your fellow divers with it if you’re careless.