research and development, conducted by Extrema
Ratio in collaboration with Military Dive Teams of the
Italian Special Forces, Law Enforcement Dive Teams
and Civilian Underwater Operation Experts. Units
involved in underwater and amphibian operations use
a variety of specialty tools.
The main objective of the ULTRAMARINE Project is to
substitute these different tools with one versatile
utensil capable of performing the multitude of tasks
that professionals in the fields are asked to perform in
these difficult and challenging operations.
As with any respectable working tool, the mass of the
blade has to be heavy enough to efficiently chop
branches and shrubs in order to make emergency
shelters, camouflage emplacements, stretchers,
utensils or sector stakes.
blade is dull from wear & tear.
be used as a hammer or glass breaking tool.
To avoid damaging buoyancy or flotation devices
during on-board operations with the exposed metal
components of the knife, a flap was incorporated to
cover the sheath & knife.
developed for use as a screw-pin shackle wrench.
equipment without having to sheath the knife.
handle was designed with a plus sized grip & a special
anti-slip material developed by Extrema Ratio to
facilitate retention while wearing neoprene gloves.
line cutter the blade withstands a load index of 45 kg
wrench slot, with load positioned in the center, the
blade withstands a load index of 70 kg (154 lbs).
hydrodynamic, with a close, tight fit to the body that
reduces the possibility of entanglements.
sheath also has a quick-release function that allows
the knife to be rapidly drawn by simply pulling on the
upper portion of the protective flap.
protective flap uses special anti-wet snap fasteners
that are specifically designed for water environments.
access to the knife.
cutting system for use in entanglement emergencies.
reduce the chance of entanglement and snaring while
distinguish the orientation of the blade by feel in low
light / no light situations.
Besides being a good camp knife the ULTRAMARINE
was designed so the handle could be disassembled,
the blade attached to a pole and used as a spear.
reduce light reflection wile operating in hostile
sharpening diamond sharpening plates: one for the
primary blade and the second for the net cutter.
Supplied with the knife are 2 TEK-LOK belt
support, 2 additional leg straps, 1 Lubra-Skin spray
(100ml), 1 ink eraser, 2 additional O-ring, 1 additional
TEK-LOK screw, 1 additional washer, 1 additional red
- Extrema Ratio
- Age Restriction:
- Blade Length (cm)
- Overall Length (cm)
- Blade Material:
- N690, X105CrCoMo182
- Blade Thickness (cm)
- 1 Year
- Handle Material:
- 2014-01-15 00:00:00
- Shipping Group:
- Parent Base Price:
- Lead Time Dropdown:
- 4 - 6 Weeks