Is a small knife enough for spearfishing?

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Ermes

Eagle Titanium Knife

Name: Eagle Titanium Knife
Brand: Ermes
SKU: 20.0000.00
Price: 64.00 EUR
Availability: InStock

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€64,00

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In stock

The Knife Eagle Titanium Ermes is a spearfishing knife made from a 4 mm titanium plate machined with CNC technology, weighing only 48 g and with a total length of 172 mm.

The blade has a double edge (smooth + serrated) with an integrated shaft extractor and the sheath is made of POM-C with a double stainless steel ball closure in AISI 316 making it a complete, reliable tool ready for underwater use.

SKU: 20.0000.00

4 mm titanium Blade: maximum corrosion resistance, superior lightness, and no galvanic reactions — zero maintenance

Double edge smooth + serrated: complete versatility in every underwater situation

Integrated shaft extractor directly in the Blade for immediate convenience during fishing

CNC machining on every component: precision, reliability, and premium build quality

POM-C Sheath with double stainless steel AISI 316 ball closure: quick and secure extraction, attachable to belt or arm

Weight of only 48 g for a total length of 172 mm: compact, balanced, and non-intrusive during diving

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Eagle Titanium Knife

€64,00

Knife Eagle Titanium - Ermes

The Ermes Eagle Titanium Knife is a high-end spearfishing knife, machined from a 4 mm titanium plate using CNC (Computer Numerical Control) manufacturing. The blade design evokes the stylized outline of an eagle, a symbol of agility, precision, and power underwater. Weighing just 48 grams and with an overall length of 172 mm, it is an extremely compact and easy-to-handle knife.

Titanium Blade: Strength and Light Weight

The blade is made entirely of titanium, a material that provides exceptional corrosion resistance, no galvanic reactions, and superior lightness compared to stainless steel. It requires no special maintenance: titanium does not rust and maintains its characteristics unchanged over time, even in aggressive marine environments.

Blade thickness: 4 mm
Total weight: 48 g
Overall length: 172 mm
Material: titanium – corrosion-resistant, lightweight, free from galvanic reactions

Double Edge: Versatility in Any Situation

The double-edge geometry combines two distinct functions in a single blade:

Plain Edge – for clean, precise cuts on lines, fish, and various materials
Serrated edge – for more demanding tasks that require greater cutting power

Integrated Shaft Extractor

A practical shaft extractor is integrated directly into the blade, making the knife a complete, multifunctional tool for spearfishing. It eliminates the need to carry a separate tool, optimizing space and convenience during the dive.

POM Handle and Safety Sheath

The handle is made of POM (polyoxymethylene), a technical material that combines ergonomic comfort, secure grip, and resistance to the marine environment. Available in white or black to match each spearo’s aesthetic preferences.

The POM-C sheath is custom-designed for the knife and includes:

Satin-finished stainless steel cover
Double AISI 316 stainless steel ball locking system for secure automatic retention and quick extraction
Hole for safety lanyard
Can be attached to the belt or arm (straps not included)

CNC Machining: Precision in Every Detail

Every component of the Ermes Eagle Titanium Knife is manufactured using CNC (Computer Numerical Control) technology, ensuring extremely tight machining tolerances, maximum repeatability, and high build quality in every single piece. The result is a reliable, precise, and durable knife designed to withstand the most demanding conditions of the underwater environment.

Technical Specifications

Blade material: 4 mm titanium

Product specifications

List of product specifications, including variants and additional useful information.

Brand

Ermes

Use

from belt
from arm
from calf

Type

Daggers

Discipline

Spearfishing

Masks

Fins

Wetsuits

Outdoor

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Frequently Asked Questions

In spearfishing, a knife is primarily a safety tool. It can be used to cut shooting lines, nets, ropes, monofilament, or other items that may create dangerous situations underwater. It is also useful for handling the fish after the catch.

Often, yes. For most outings, a compact, well-sharpened knife is more than enough: the priority is that it is accessible, secure in its sheath, and truly effective at cutting.

In spearfishing, the compact size makes positioning and carrying easier, and it is absolutely adequate for dispatching small fish. However, when fish get larger, or when the risk of getting entangled in nets, lines, or debris on the bottom increases, a long, razor-sharp blade becomes an essential requirement.

Technical stainless steel offers good cutting performance, durability, and a balanced price. Titanium is more corrosion-resistant and very lightweight, but usually comes at a higher cost. The choice depends on how often you use it, your spearfishing environment, and the level of maintenance you want to dedicate to the knife.

For spearfishing, it is best to choose a compact, lightweight, corrosion-resistant knife that is easy to draw even with gloves on. The blade should be sturdy enough to cut shooting lines and ropes, but not so bulky that it interferes with finning and trim.

Yes. After every trip at sea, it is important to rinse the knife with fresh water, dry it thoroughly, and check the blade, sheath, and locking system. Even knives made from high-quality stainless steels generally contain a percentage of carbon that contributes to cutting performance, but can promote the appearance of slight oxidation if exposed to the saltwater environment for extended periods. For this reason, rinsing with fresh water is essential to limit oxide formation and preserve the knife’s efficiency over time. Even the most corrosion-resistant materials benefit from simple but regular maintenance.

The knife can be attached to the belt, arm, calf, backplate, or other points on your gear. The most important thing is that it stays secure, does not restrict movement, and can be reached quickly even in an awkward situation.