Cressi Borg Long Blade Knife for Diving and Spearfishing - Durable

In this review of the Cressi Borg long blade knife, the bottom line is simple: it is a solid, no-frills diving and spearfishing tool for those who need a large, reliable cutting blade at a reasonable price. The Borg's standout attribute is a long, tempered 304 Japanese stainless steel blade that combines a straight edge and a full-length serrated edge, making it especially effective for cutting lines and dealing with tangled gear. For divers and spear fishers who value reach, edge variety, and a secure sheath release, the Borg earns attention.

Key Features

• Dual-edge blade: One side is straight and the other is serrated, providing versatile cutting performance for rope, webbing, and kelp without switching tools.
• 304 Japanese stainless steel: The tempered blade balances hardness and corrosion resistance for underwater use while holding a useful edge.
• Ergonomic handle: The shaped handle gives a secure grip even when wearing gloves, reducing the chance of slips during work underwater.
• Technopolymer thumb tab: A small tab separates the handle from the blade to protect the thumb and improve control when applying pressure.
• Locking sheath with one-hand release: The sheath locks the knife in place but allows a single-handed release, making deployment quick and practical during dives.
• Generous dimensions: With a total length of 10.43 in and a 5.51 in blade, the Borg offers extra reach for cutting or prying tasks while on a dive.

Who It's For

The Borg suits recreational and serious divers and spearfishers who need a long, robust blade for line cutting, gear freeing, and general underwater tasks. Its large 5.51 in blade and mixed straight/serrated profile make it helpful when encountering thick lines or tough entanglements.

Those who want maximum corrosion immunity or a smaller travel-friendly knife should look elsewhere; users who expect perfect rust immunity long-term may prefer a higher-grade alloy. Similarly, if you need scissors or shears for precise trimming, this long blade is not a substitute.

Pros & Cons

Pros

• Large tempered 304 Japanese stainless steel blade that holds an edge and cuts through lines effectively.
• Mixed straight and serrated edges cover a wide range of cutting needs without tool changes.
• Secure ergonomic handle and technopolymer thumb tab improve grip and control even with gloves.
• Sheath locks reliably and supports one-hand release with standard leg straps for easy carry.

Cons

• Some users report surface rust developing over time, so thorough rinsing and drying are recommended after use.
• The large size may be bulky for minimalist divers or those preferring a compact knife option.

Specifications

Brand	Cressi
Blade material	304 Japanese stainless steel
Total length	10.43 in (265 mm)
Blade length	5.51 in (140 mm)
Sheath	Locking sheath with one-hand release and two leg straps
Design / Origin	Designed in Italy, made in Taiwan

Our Verdict

The Cressi Borg is a practical, cost-effective long blade for divers and spearfishers who need reach and cutting versatility. Its tempered 304 stainless blade, mixed edge profile, and secure sheath make it a dependable tool for freeing lines and handling underwater snags, though users should rinse and dry it after dives to limit surface corrosion.

Frequently Asked Questions

Is the blade suitable for cutting heavy lines?
The straight and serrated edges together are effective on thick lines and ropes commonly encountered in diving and spearfishing.

Does the sheath release with one hand?
Yes, the sheath features a locking mechanism designed for one-hand release and includes two straps to secure it to the leg.

How corrosion resistant is the knife?
The Borg uses tempered 304 Japanese stainless steel which resists corrosion reasonably well, but proper rinsing and drying after use will help prevent surface rust over time.