Approved - knives withdrawn from private collections, checked, overhauled and certified by Coltelleria Collini

KNIFE PREVIOUSLY PURCHASED, FROM A PRIVATE COLLECTION
* Provenance: Acquired from a private individual, previously purchased
* Condition: Overall in excellent condition; shows no signs of actual use. It does, however, have the typical scuff marks caused by inserting and removing the sheath, which inevitably abrades the satin finish of the blade; these marks are superficial, uniform, and characteristic of this particular knife model. The sheath is in excellent condition, with minimal signs of abrasion and no breaks or sagging. It comes with an additional nylon pocket with Velcro that contains the original vintage oil-lubricated compass.
* Commercial availability: Discontinued
* Sharpness: Factory-sharpened, but could be improved. Not re-sharpened to preserve the product’s original appearance.
* Marks on the blade: Several superficial abrasion marks left by the sheath, typical of this particular knife model
* Marks on the handle: A few barely noticeable signs of age
* Box: -
* Sheath: Present, in excellent condition, with an additional nylon pocket containing the original period oil-filled compass
* Manuals, Certificates, and Warranties: -
* Inspected and Certified by our in-house laboratory

The most distinctive—and patented—feature of the Buckmaster Buck 184 is the presence of two removable, screw-mounted harpoons, or hooks. Their primary function is to provide an anchor point: the knife can, in fact, be used as a sort of throwing hook by attaching a rope to the ring on the pommel. The manufacturer claimed the grappling hooks had a holding capacity of up to 600 pounds.

In the case of the Navy SEALs, the requirement was for a knife that could also be used underwater and, if necessary, allow for the anchoring of equipment or vehicles to a submerged anchor point. This specific requirement contributed to the choice of an all-steel construction, designed to offer strength and durability even under harsh underwater operating conditions.

Intended Use: Sports / Collectible

Production Type: Industrial
Country of Manufacture: USA
Blade: Knife made entirely of 425M stainless steel
Blade Finish: Satin
Handle: Hollow, stainless steel, with rear screw plug
Blade Length: 185 mm.
Blade Thickness: 7.5 mm.
Overall length: 315 mm.
Balance: offset toward the guard
Weight: 675 g.
Sheath: black ABS with an additional nylon pocket, featuring loops and a Velcro closure, containing a small oil-filled field compass.
Notes: 1986 knife previously purchased, from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased
* Condition: Overall in excellent condition
* Available on the market: Out of production, available in different finishes and configurations
* Sharpness: Factory sharp
* Marks on blade: None
* Marks on handle: None
* Box: -
* Sheath: Present
* Manuals, Certificates, and Warranties: -
* Checked and certified by our in-house laboratory

The Operator 7 model is huge! TOPS Knives has dared to create an imposing knife with a thick blade and solid handle, creating a balanced tool that excels as a true “workhorse.” At the same time, it retains that classic American combat knife aesthetic, looking as spectacular as it performs.

Made from 8 mm thick 1075 steel, the blade is differentially heat treated: the edge is impact resistant, while the spine is incredibly sturdy. The handle combines sand-colored Micarta on the lower part with black G10 on the upper part, offering optimal grip. Once assembled, the handle is over 2.5 cm thick, shaped to fit perfectly in the user's hand, just like an axe or hatchet handle.

Designed to be useful and comfortable, this knife is for those who don't hold back. It is at home with door kickers, survivalists, and weekend enthusiasts alike. The rounded handles and guard ensure comfort of use, while the finger choil allows for great precision in the most delicate cuts. The 16.5 cm of active edge covers most needs, and the weight of the knife helps to do most of the work itself. The included Kydex sheath with dangler attachment makes it easy to carry in any terrain.

Intended use: Utility

Type of production: Semi-Industrial
Country of production: USA
Blade: full tang in 1095 carbon steel 58/60HRC
Blade treatment: Black River Wash (Stonewashed)
Handle: G10 Black and Micarta
Blade length: 184 mm.
Blade thickness: 8 mm.
Total length: 318 mm.
Balance: on the guard branch
Weight: 695 g.
Sheath: Kydex
Packaging: -
Notes: previously purchased knife from a private collection

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used
* Condition: Overall in good condition, with superficial cosmetic marks on the blade due to actual use, which in no way compromise its functionality and use
* Available on the market: On the market
* Sharpening: Resharpened
* Marks on blade: Several superficial cosmetic marks on the blade
* Marks on handle: None
* Box: Present and complete
* Sheath: Present and in excellent condition
* Manuals, certificates, and warranties: Present
* Checked and certified by our internal laboratory

The M7 is one of lionSTEEL's most impressive outdoor knives: designed for the most demanding challenges, it combines generous dimensions with surprising maneuverability. Designed to meet the need to cut branches and tackle demanding hikes, it concentrates most of its weight on the blade to facilitate effective chopping and batoning operations.

Made with SOLID technology, the Micarta handle is carved from a single block using 4-axis milling, ensuring structural strength and a firm, secure grip in all conditions. The Sleipner steel blade is resistant to the most intense stresses and easy to sharpen.

The M7 comes with a Cordura-coated Kydex sheath, equipped with a belt loop with MOLLE attachment, for stable and versatile carrying.

A true field companion, ready to tackle any outdoor adventure.

Type of production: Industrial
Country of production: Italy
Blade: full tang, Sleipner steel 60/61HRC
Blade finish: Black MilSpec
Handle: SOLID, machined from a single piece of Micarta using 4-axis milling 
Blade length: 180mm.
Blade thickness: 5.5mm.
Total length: 315mm.
Balance: advanced
Weight: 410g.
Sheath: Kydex and Nylon, modular, multi-position, MOLLE compatible
Packaging: Cardboard box with Lion Steel logos
Notes: knife from a private collection, previously purchased and used

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: Iconic knife from the early 2000s, used, but overall in excellent condition
* Commercially available: Discontinued
* Sharpening: Factory sharpened, can be improved.
* Marks on blade: Signs of wear typical of this model and material, given by rubbing against the sheath
* Marks on handle: None, normal workmanship marks found on all these models.
* Box: /
* Scabbard: Present, in very good condition, with normal signs of workmanship present on all of these models.
* Manuals, Certificates and Warranties: /
* Checked and Certified by our in-house laboratory.

MISSION beta titanium knives are high-quality tools designed to withstand the most extreme conditions.

Made from a special beta titanium alloy, these knives combine exceptional lightness, corrosion resistance and strength. MISSION developed these knives to ensure durability and reliability in extreme environments, such as the sea or high temperatures, and they are virtually indestructible. The main feature of these knives is their ability to remain perfectly usable even after heavy use.

The knives have been tested and selected by U.S. Navy SEALs, who have used them in sensitive missions and special operations. Because of their incredible durability, ease of maintenance, and reliability, they have become a benchmark for special forces professionals and high-end outdoor equipment enthusiasts.

Intended Use: Tactical/Sub

Type of Manufacture: industrial
Blade: made of Beta Titanium with a micropeened finish
Country of manufacture USA
Handle: Hytrel
Blade length: 185mm.
Blade thickness: 6.3mm.
Total length: 305mm.
Weight: 264g.
Sheath: made of Hytrel and rubber, with Nylon strap
Packaging: /
Notes: previously purchased knife, from private collection - discontinued, iconic early 2000s product

Ka-Bar - 1217 - Full Set 1991 50th Pearl Harbour Anniversary Model 02-1241 - PRIVATE COLLECTION - knife

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Provenance: withdrawn from a private collection, previously purchased.
* Condition: Like new, never taken out of its box. 
* Commercially available: Discontinued, 1991 model
* Sharpening: Factory.
* Marks on blade: /
* Marks on handle: /
* Box: Present, original, with “50th Anniversary Pearl Harbor” logos.
* Scabbard: Present
* Manuals, Certificates and Warranties: Present, complete set.
* Checked and Certified by our in-house laboratory

This Ka-Bar 1217, made in 1991, is a commemorative knife designed to mark the 50th anniversary of the Japanese attack on Pearl Harbor on December 7, 1941. This surprise attack, conducted by the Imperial Japanese Navy, aimed to destroy the U.S. Pacific Fleet and prevent a rapid response to Japanese expansion. The raid claimed the lives of about 2,400 people, including military personnel and civilians, and led the United States to enter World War II, declaring war on Japan the following day.

The Ka-Bar 1217, with its high-carbon steel blade and leather ring handle, has the same design as the legendary Ka-Bar knife used by U.S. soldiers during the conflict. The blade is engraved with the 50th anniversary logo and a symbolic image of Pearl Harbor, making the knife a collector's item and a tribute to the historical memory of the event. The Ka-Bar 1217 is not just a tool but a mark of honor and respect for the victims of the attack and the heroes who contributed to the victory of the United States during World War II.

Unlike the standard models, here we have engraving from the right side of the blade, hand-molded leather washers with an aged look, and even the scabbard is made like the 1940s models, with darker leather and steel staple points in addition to the traditional contrasting cream-colored stitching.

Intended Use: Tactical/Military

Blade: 1095 56/58HRC carbon steel
Handle: hand-molded leather rings with aged appearance
Blade length: 180mm.
Blade thickness: 4mm.
Total length: 290mm.
Balance: set back - 1cm. from the lower guard branch
Weight: 305g.
Sheath: leather, with contrasting stitching and steel staple points
Notes: very rare 1991 commemorative edition for the 50th anniversary of the attack on Pearl Harbor

USED KNIFE, WITHDRAWN FROM PRIVATE COLLECTION
* Type: Knife previously purchased, from a private collection
* Condition: Like new
* Available on the market: Out of production
* Sharpening: Factory edge
* Blade marks: None
* Handle marks: None
* Box: Present and in excellent condition
* Sheath: Present and like new
* Manuals, Certificates, and Warranties: Present
* Checked and Certified by our internal laboratory

At 2:38 in the morning on the night between January 16 and 17, 1991, just 18 hours and 38 minutes after the expiration of the ultimatum set by the United Nations, Operation "Desert Storm," the largest allied military action since 1945, began.

In what would become the first conflict in history to be broadcast live on television, 90,000 tons of bombs would be dropped, marking a new point of no return for what was considered acceptable by global public opinion. The imagery that war helped create would lay the groundwork for the long series of Western military interventions in the Middle East in the years that followed.

Intended use: Tactical/Military

Country of production: USA
Blade: 1095 carbon steel 56/58HRC
Handle: Leather rings
Blade length: 180mm.
Blade thickness: 4mm.
Total length: 305mm.
Balance: Set back - 1 cm from the lower guard
Weight: 305g.
Sheath: Leather
Notes: Commemorative edition from the 2000s, out of production and no longer available

KNIFE RETIRED FROM PRIVATE COLLECTION
* Provenance: Collected by a private individual, previously purchased
* Condition: Overall in good condition
* Commercially available: in production
* Sharpness: Original sharpness
* Marks on blade: signs of use
* Marks on handle: None
* Box: Original
* Sheath: /
* Checked and certified by our internal laboratory

Intended use: Survival/Utlity

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Blade Treatment: Black Hidroglider
Handle: Forprene
Blade length: 175mm.
Blade thickness: 6mm.
Total length: 300mm.
Balancing: Advanced to 3cm. from the guard branch
Weight: 340g.
Sheath: in Nylon, M.O.L.L.E compatible.
Packaging: cardboard box with Fox logos
Notes: Survival kit included with M.O.L.L.E. type attachments.

The survival kit contains:
* water container
* nylon strap
* mini compass
* candle
* Flint
* wire saw
* fishing kit
* multi-tools
* matches
* needle and thread kit
* razor blade
* emergency whistle
* copper wire
* SOS mirror
* pencil
* fluorescent light stick

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: Overall in very good condition.
* Commercially available Discontinued
* Sharpening: Factory
* Marks on blade: No
* Marks on handle: No
* Box: -
* Scabbard: Present - Original
* Manuals, Certificates and Warranties: -
* Checked and Certified by our in-house laboratory.



The SEAL Team 2000 was designed in collaboration with the Navy SEALs themselves to meet their specific needs in the field. It was introduced in 2001 and quickly became a popular knife among law enforcement professionals, military personnel and tactical knife enthusiasts.

The SOG SEAL Team 2000 Knife was created to withstand the most extreme conditions and challenges in the field, making it a reliable tool for those operating in tactical environments. Its popularity has grown over time due to its reputation as a quality knife built to last and adapt to a variety of situations.



Intended Use: Sporting/Collection

Type of production: Industrial
Blade production: Japan
Blade: AUS-6 stainless steel
Blade Finish: Powder coated
Handle: Zytel
Blade length: 180mm.
Blade thickness: 6mm.
Total length: 315mm.
Balance: on the guard branch
Weight: 359g.
Sheath: made of kydex

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: knife from 2014 previously purchased and used.
* Condition: Overall in good condition.
* Commercially available Out of production.
* Sharpening: Professionally re-sharpened.
* Marks on blade: Slight superficial rub marks on matte finish.
* Marks on handle: Small superficial marks on pommel and guard.
* Box: Not present
* Scabbard: Present, original, fiberglass, nylon and cordura sheath with stainless steel thread cutter.
* Manuals, Certificates and Warranties: Not present
* Checked and Certified by our in-house laboratory



Knife launched on the market in 2014 by Fox Knives, civilian version of their Spartan Defender Military Bayonet. It has the distinction of having a trapezoidal polymer handle with the blade offset upward from the user's grip. Model now discontinued and replaced by the "Spartan 2 Leonidas" currently in production, decidedly more canonical in appearance, conformation and materials.

Intended Use: Collection / All Round Utility / Tactical

Country of Production: Italy
Blade: Stainless Steel N690Co 59/60HRC with MILSPEC MIL-C-13924 treatment
Handle: NATO Black 9011 forprene and 316L stainless steel with MILSPEC MIL-C-13927 treatment
Blade length: 185mm.
Blade thickness: 6mm.
Total length: 315mm.
Balance: On the lower guard branch
Weight: 390g.
Sheath: made of high-strength fiberglass with Cordura and ballistic Nylon exterior. The main sheath is equipped with a wire cutter plate.
Notes: knife from 2014 previously purchased and from private collection - discontinued item

KNIFE FROM PRIVATE COLLECTION
* Type: Previously Purchased
* Condition: Overall in good condition
* Commercially available Out of production
* Sharpening: Factory
* Marks on blade: light
* Marks on handle: light, on the guard
* Box: Original, with some marks
* Scabbard: Original, leather, with some small marks, also due to the insertion of the knife
* Manuals, Certificates and Warranties: Certificate present
* Checked and certified by our in-house laboratory

This limited edition Magnum Tanto style piece is based on a historical Japanese samurai sword that was popular during the Heian period (794-1185). The modified dagger-style blade, based on a design by the legendary blacksmith Amakumi, refers to the period when samurai lived the 'bushido' or 'way of the warrior'. The shape of this blade is called Kissagi-moroha and is derived from the Kogarasu-maru sword. The material of the blade is 440A stainless steel with a rich two-tone finish. The traditional handle is combined with synthetic material simulating tsuka and ray skin; the Tsuba provides a secure grip. Supplied with a genuine leather sheath and presentation box. Limited to 1,999 pieces worldwide, each serialised.

Intended use: Collection / Utility

Production type: Industrial
Country of manufacture: Taiwan
Blade: Ful tang in 440A steel
Blade finish: satin finish/polishing
Handle: canvas and synthetic ray skin
Blade length: 180mm.
Blade thickness: 5mm.
Total length: 300mm.
Weight: 271g.
Sheath: black leather
Packaging: case with certificate of guarantee
Notes: Numbered and limited edition of 1999 pieces - Serial Number 136

Knife from a private collection - presumably produced in the early 1980s - overall in excellent condition, with factory sharpening - accompanied by original leather sheath - checked and certified by our in-house laboratory.

* Type: Previously purchased
* Condition: in like new condition
* Available on the market: no longer in production, difficult to find, dating back to the 80s
* Sharpening: Original
* Marks on the blade: no
* Marks on the handle: no
* Box:-
* Sheath: in leather
* Manuals, Certificates and Warranties: -
* Checked and certified by our internal laboratory

Carl Schlieper Stahlwarenfabrik & Export was originally a trading company founded between 1754 and 1798 in Remscheid in Germany. Products included freehand knives, tools and razors. A branch of the company in Solingen was engaged in the production of knives including slipjoint, automatic knives, daggers, machetes, bowie, razors and kitchen knives. Over the years various brands and 22 patents held by the company have been created and thousands of pieces sold worldwide. Carl Schlieper was liquidated for bankruptcy in 1993. The production of the brand was subsequently acquired by Freidrich Olbertz in Solingen.

Intended use: Collection / Survival

Type of production: industrial
Blade: 440A Ice Tempered stainless steel
Country of production: Germany
Handle: brass, coated with synthetic material, hollow inside (useful space approx. 50mm. X 14mm.) With screw cap
Blade length: 185mm. (length of serration on the back 95mm.)
Blade thickness: 4.8mm.
Total length: 304mm.
Balancing: on the guard
Weight: 400g.
Sheath: in leather, with pocket containing a sharpening stone
Notes: knife from the early 1980s, from a private collection, overall in excellent condition

COUTEAU DE RETRAITE PROVENANT D'UNE COLLECTION PRIVÉE - Modèle Buck 120 datant des années 90
* Type : déjà acheté
* Etat : en excellent état, comme neuf
* Disponible dans le commerce : disponible dans le commerce dans les versions les plus récentes
* Affûtage : Original
* Marques sur la lame : non
* Marques sur le manche : non
* Boîte : sans boîte
* Gaine : gaine en cuir noir d'origine
* Manuels, certificats et garanties : -
* Contrôlé et certifié par notre laboratoire interne

Utilisation prévue : Tactique

Type de production : Industrielle
Production Lama : États-Unis
Lame : acier inoxydable 420HC
Traitement de la lame : -
Manche : en Polymères
Longueur de la lame : 185 mm.
Épaisseur de la lame : 4,5 mm.
Longueur fermée : -
Longueur totale : 300 mm.
Epaisse fermée : -
Équilibrage : -
Poids : 228 grammes.
Fermeture: -
Agrafe: -
Fourreau : en cuir noir
Emballage: -
Noter: -

Knife from a private collection - presumably produced in the early 1980s - overall in excellent condition, with factory sharpening - accompanied by original leather sheath - checked and certified by our in-house laboratory.

Carl Schlieper Stahlwarenfabrik & Export was originally a trading company founded between 1754 and 1798 in Remscheid, Germany. Products included knives, tools and freehand razors. A branch of the company in Solingen was involved in the production of knives including slipjoint, automatic knives, daggers, machetes, bowies, razors, and kitchen knives. Over the years, several trademarks were created and 22 patents held by the company and millions of pieces sold worldwide. Carl Schlieper was liquidated by bankruptcy in 1993. Production of the brand was later acquired by Freidrich Olbertz in Solingen.

Intended use: Collection/Survival

Type of production: industrial
Blade: stainless steel 440A Ice Tempered
Country of manufacture: Germany
Handle: brass, synthetic coated, hollow inside (usable space approx. 50mm. x 14mm.) with screw cap
Blade length: 185mm. (serrated length on back 95mm.)
Blade thickness: 4.8mm.
Total length: 304mm.
Balance: on the guard
Weight: 400g.
Sheath: leather, with pocket containing a sharpening stone
Notes: knife from the early 1980s, from a private collection, overall in very good condition

Knife from private collection - Very rare knife from 2015, discontinued for several years, in min conditions - Comes with original packaging (box, protective plastics, manuals) and accessories (sheath and straps) - Never used, with original factory sharpening - Checked and certified by our in-house laboratory.

Multi-role non-magnetic knife, developed and officially acquired by the landing troops of the Italian Army. Totally titanium blade and tang make the knife particularly resistant to oxidation and usable for magnetic trigger buried ordnance search (mine probing).

Intended Use: Tactical / Military / Sub / Amphibious

Production type: Industrial
Country of Production: Italy
Blade: Titanium Beta 40HRC
Blade Finish: Burnishing
Handle: Forprene
Blade Length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Weight: 195g.
Sheath: Desert nylon, with ABS hard shell; M.O.L.L.E. type thigh straps and attachments.
Packaging: Cardboard box, certificates, manuals
Notes: Widia glass breaker on rear tang.

Knife withdrawn from private collection, dates from the very first production in 1984 (in fact, it does not indicate the patent engravings, affixed in 1985 and does not indicate the production date, affixed only from 1986). Globally in good condition, it has marks on the blade and handle due to the normal passage of time and the very aggressive scabbard which, containing a spring-loaded metal foil, irreparably scratches the blade both in insertion and extraction - It still has the factory sharpening and comes with a compass in the tang and two harpoons already engaged on the guard branch; lacking instead the box and additional accessories - Checked and certified by our in-house laboratory.

Intended Use: Sporting / Collection

Type of production: Industrial
Country of manufacture: USA
Blade: knife made entirely of 425M stainless steel
Blade finish: satin-finished
Handle: hollow, stainless steel, with rear screw cap
Blade length: 185mm.
Blade thickness: 7.5mm.
Total length: 315mm.
Balance: set back from the guard branch
Weight: 675g.
Scabbard: black ABS
Notes: The feature, patented, is the presence of two removable screw-on harpoons/hooks. The function of these is simple anchorage. In fact, this knife can be used as a throwing hook by attaching a rope to the ring on the pommel. The manufacturer guarantees a harpoon hold of up to 600 pounds. The Navy Seals, specifically, had requested a knife that could be used underwater in order to anchor the vehicles to an underwater attachment point, and that is the reason for the total steel construction.

Knife withdrawn from private collection - Overall in excellent condition, still with factory sharpening, a few small signs of oxidation - Distinguished by Copper Brush finish, not usual to find on Wander models and very rare ivory white G-10 handle - Checked and certified by our in-house laboratory.

Type of Production: Handcrafted
Country of Production: Italy
Blade: D2 steel at 59/60HRC
Blade Finish: Copper Brush
Handle: G-10
Blade Length: 180mm.
Blade thickness: 6.5mm.
Total length: 340mm.
Balance: backward
Weight: 605g.
Sheath: made of Kydex, thermoformed, with Tek-Lok type attachment
Packaging: -
Notes: supplied with certificate of authenticity and warranty dated 12/20/2020 - knife withdrawn from private collection, overall in excellent condition

Knife withdrawn from a private collection in excellent condition, re-sharpened - Complete with original certificate - Checked and certified by our in-house Coltelleria Collini laboratory.

Type of production: Artisan
Production Lama: Italy
Blade: in D2 steel at 59 / 60HRC
Blade treatment: Row Finish
Handle: Micarta
Blade length: 180mm.
Blade thickness: 6.5mm.
Total length: 340mm.
Balancing: set back
Weight: 605g.
Sheath: in Kydex, thermoformed, with Tek-Lok type attachment
Packaging: -
Note:

The legendary BuckMaster 184 Survival Knife is currently conceived and designed specifically for the Navy SEAL Team in 1980. He was created by CJ Buck (CEO of Buck Knives) and designed a small business, Qual-A-Tec, in 1981 in California. The BuckMaster is the American icon of the coltellis that emerged in the '80s and has contributed to the creation of the famous M9 bayonetta of the American army. The production was 2600 examples all'anno.

The brand new model, coming from the private collection, comes from the first production, dating back to 1984. Globally in perfect condition, only damaged and used. Only deprived of scatola.

Destination of use: Sportivo / Collezione

Production type: Industrial
Lama Production: USA
Slat: coltello entirely made in stainless steel 420HC
Lama Treatment:-
Manicure: acciaio
Blade length: 185mm.
Blade thickness: 7.5mm.
Chinese lunge: -
Total length: 315mm.
Weight of chiuso: -
Bilanciatura: arrest of the guard branch
Weight: 675g.
Chiusura:-
Clip:-
Foyer: in black ABS
Confezione:-
Note: The characteristics, brief, are data of the presence of due arpioni/ganci smontabili a vite. The function of the quest is simple ancoraggio. This coltello may be infatti used as the lancio's gancio fissando una corda all'anello present sul pomello. The product guarantees a tenuta of fine arpioni at 600 libbre. I Seals della Marina, nello specifico, avevano richiesto un coltello che potesse essere usato sott'acqua per poter ancorare i mezzi ad un punto de fissaggio subacqueo, ed ecco il reason della totale costruzione en acciaio.