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Blog about diving in Burma and Thailand

A dive knife ... what for and how to choose one?

15/10/2017

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A dive knife ... what for and how to choose one?
When talking about essential safety item, dive knives are not the first thing people think about...
When talking about essential safety item, dive knives are not the first thing people think about when they start buying their own gear. So why exactly do you need a knife to go diving? And then from the large variety of dive knifes and line cutters,  which one is right for you?

A dive knife is not a weapon, it is a tool...

Even if you are supposed to get one as soon as you become an advanced open water diver... it might not be the first thing you'll think of.
The main point to understand is that a dive knife is not a weapon, it is a tool. It should never be used to harm or touch aquatic creatures or deface the underwater environment.
The most important use of it is to free yourself or your buddy  in case you get stuck in a fishnet or with vegetation.
The most important use of it is to free yourself or your buddy  in case you get stuck in a fishnet or with vegetation.
save turtle from entanglement
But you can also become a hero  by freeing a poor entangled Marine life ... or removing an abandoned fishing net from a dive site.
The extremity of the blade can be blunt or pointed.

​There are so many ... how to choose?

Here are some tips to help you to find the one which will work best for you, depending on your needs and the environment you are diving in.
​What should you pay attention to ...
dive knive edge and cover

​For most recreational divers, blunt tip should be fine. And better not to puncture your air hoses or wetsuit!

​Material

Stainless steel or titanium?

One advantage of the titanium is that it pretty needs no maintenance. The knives do not rust and are corrosion resistant. They are lighter, more flexible and harder to break.
Titanium is the high level choice so it is significantly more expensive.

Stainless steel will need maintenance not to rust. It needs to be cleaned with fresh water, dried and oiled or rubbed with silicone after each dive. 
You'll have to choose between 300 or 400 series. The lower the number, the more resistant the blade is to corrosion. However, a lower number blade will loose its edge faster.

Shape...

Despite what people may say ... size does matters!
Picture
A blunt tip is great for prying, digging, hacking and chiseling.
A sharp tip is great for puncturing and cutting.
You can also choose a dive knife with both straight and serrated edges, for more adaptability! 

Size...

Remember you are carrying a scuba knife in case you are entangled ... not to make you feel like a superhero!
Picture

You should rather go for a medium size (4 inches).
Smaller ones can fit anywhere but make sure you can grip the knife securely.
Bigger ones can be too cumbersome and dangerous.
The medium ones are the more practical, and they can be strapped to a variety of easy-to-reach locations.

Attachment...

​Your knife can be strapped almost everywhere ...
Wear the knife where it is easy to be reached with one hand.

​On the calf "James Bond" style, on the leg "Lara Croft" style ... or more simply on your BCD pocket or inflator hose . In this case, make sure it is a medium blunt one!
Picture

  • line cutting notch
  • finger grips
  • security lock
  •  fixed or foldable blade
And remember to use your dive knife safely and responsibly!
Want a knife for your next cruise with us? Check out our catalogue.

Other dive knives features to consider ...

One of our special cruises for the next diving season...

Blackwater diving is an extraordinary new way of night diving!
Blackwater diving is an extraordinary new way of night diving!


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Camille Fogarolo 

Camille has been traveling the world since her mid twenties and dived many seas before finally settling down in Thailand in 2012. With her husband Franck, they opened The Smiling Seahorse liveaboard to offer cruises in the most unexplored area of South East Asia and became quite the experts when it comes to diving in Myanmar! Proud mother of two she still travels as much as she can and usually joins a dive trip to Mergui Archipelago every month.

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  • When & Where
    • Schedule and Prices
    • Destinations >
      • North Andaman Thailand >
        • Similan Islands
        • Surin Islands >
          • Richelieu Rock
        • The essential Underwater photo Guide to diving Thailand
      • South Andaman Thailand >
        • Phuket & Koh Phi Phi National Parks
        • Koh Lanta National Park
        • Koh Lipe and Tarutao National Park
      • Mergui Archipelago >
        • Liveaboard diving holiday in Myanmar
        • Burma's best dive sites
        • The Ultimate Underwater photo Guide to diving Burma
  • ABOUT
    • Our Boat >
      • DELICIOUS FOOD
    • Diving in Thailand in 2024-2025
    • Diving in Myanmar/Burma in 2024-2025
    • Blackwater diving in Thailand and Myannmar
    • Marine life in Thailand's Andaman Sea
    • Marine life in Mergui Archipelago
    • Dive Courses >
      • Learn to Dive
      • Continue diving education
      • Rescue diver
      • Professional Dive Courses
      • Hone your dive skills with a specialty course
      • Photo coaching in Thailand on the Smiling Seahorse
    • Guest Book
    • FAQ
  • Plan your trip
    • Our hotels recommendations
    • Khao Sok National Park
    • Taxi services >
      • Taxi services to and from Ranong
      • Taxi services to and from Phuket
      • Taxi services to Tap Lamu and Khao Lak
    • 10 things to do around Ranong
  • PROMO
    • HOT DEALS
    • Special Expeditions >
      • 8D Special Marine Bio with Gavin Miller - 10 Nov 2025
      • 8D Whale shark expedition - 20 March 2026 - North and South
  • gallery
    • Photos
    • Videos
  • CONTACT
  • BLOG
    • Most popular posts