The knife is an essential piece of diving equipment, not only to use as a weapon but also as a tool that can help us in dangerous situations. Underwater sport is an activity that can be very exciting because it gives you the opportunity to explore new horizons within reach of very few. However, the sea is a largely unknown field so the diver must be well equipped to avoid any mishap that may arise.
The Extrema Ratio company manufactures their knives with quality materials and modern treatments.
Italian knife company Extrema Ratio offers excellent knives models for
divers. Extrema Ratio has spent four years of effort to develop its
technology in collaboration with the Military Dive Teams of the Italian
Special Forcesm, Civilian Underwather Operation Experts and Law Enforcement
Dive Teams. The result has been the Ultramarine diving knife. This is a knife
made of stainless steel N690 as well as the majority of manufactured Extrema
Ratio knives. It’s very hard steel, resistant to oxidation due to the cobalt
content it has. The knife blade of
The Extrema Ratio Ultramarine knife has a unique design that makes it perfect for use in diving activities.
Ultramarine diving knife combines quality and versatility. The aim of Extrema Ratio has been to produce a functional tool for professionals to avoid having to wear diving multiple utensils with varied functions. Thus, the Ultramarine submarine knife can serve for multiple functions.
This is an ideal knife for use in
scuba diving activities. The material on the handle means that it is easy to
grip the knife even when wearing neoprene gloves. It also incorporates a
groove which allows you to use it on through bolts on shackles. The
Ultramarine knife includes a mooring rope which allows you to moor the knife
when you are working with it, without having to keep it in the cover.
The serrated section of the knife allows you to cut cords or other materials
It is a useful tool for use in the countryside, in forests or woodlands. The Ultramarine knife´s Extrema Ratio blade is hard enough to cut through branches, shrubs and thicket, and can come in useful for building refuges in the case of emergency, making fire, or fashioning stretchers to transport someone who is injured. In addition, as shown in the image above, the saw located at the end closest to the handle makes it easy to perform tasks such as cutting cords or similar materials in the event that the distal end of the blade becomes damaged. Furthermore, the sharp part of the blade close to the handle can be used to make precise cuts or even to carve.
The knife's inside groove
allows you to use it on through bolts on shackles
The Extrema Ratio Ultramarine knife comes in very useful in combat situations thanks to its pointed steel blade. The Ultramarine knife can also be handy in survival situations thanks to the design of its handle. It can be dismantled to attach the blade to a pole and use the knife as if it were a lance. For this purpose, the blade has also been made with a matt finish allowing us to hide from strangers and threats. In addition, the knife´s cover incorporates two sheets of diamond to sharpen both the main blade and the cutter.
The Extrema Ratio Ultramarine knife has multiple functions to be used in different natural areas
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