Few names carry as much weight beneath the waves as Siebe Gorman & Co. Ltd., the British firm whose innovations defined professional and naval diving for more than a century. From the early brass-helmeted divers of the Royal Navy to post-war clearance teams and underwater engineers, Siebe Gorman’s craftsmanship shaped the way humans worked, fought, and explored below the surface.
Our latest collection celebrates this remarkable heritage - a curated selection of diving knives, lamps, and equipment that illuminate the evolution of underwater technology from the Second World War through to the Cold War era.
'Cutting Through History' - Siebe Gorman and the Diver’s Knife
No diver’s kit was complete without a dependable blade, and the Siebe Gorman diver’s knife remains an icon of underwater utility and design. Our collection includes several outstanding examples, ranging from late and post-war naval knives to non-magnetic Admiralty Pattern models designed for mine-clearance work.
The Late War European Naval Diver’s Knife and Post-War Variant, both likely produced by Siebe Gorman, feature double-edged steel blades and Bakelite grips - durable, ergonomic, and impervious to saltwater corrosion. Their tinned and brass scabbards, non-magnetic by design, ensured safe operation near sensitive navigation and ordnance equipment.
A particularly fine specimen, the WWII Siebe Gorman Diver’s Knife & Scabbard, bears the firm’s mark and the distinctive spear-point blade associated with Royal Navy issue. Another, a WWII model with a serrated edge, reveals how wartime adaptations met the diver’s need for a versatile cutting tool - part weapon, part lifeline.
Completing this lineage is the Post-WWII Siebe Gorman Diver’s Knife (AP.6260, Admiralty Pattern) - a non-magnetic brass and phosphor bronze marvel stamped with NATO codification. Introduced in the late 1940s, it represents the technical precision of post-war British naval diving, when magnetic interference could spell disaster in mine disposal operations.
Lighting The Deep
While knives served as a diver’s safeguard, light was equally vital to underwater work. The Royal Navy Issue Siebe Gorman Underwater Divers Lamps (we have two examples of these!) are superb examples of mid-20th-century engineering.
Constructed from heavy gunmetal and glass, these lamps illuminated the seabed during ship repairs, salvage operations, and mine clearance. Painted grey externally and white within, they were designed to amplify visibility in murky conditions. Each bears its original M.O.D. record label and API markings - tangible reminders of Britain’s naval ingenuity during the mid-century era.
These robust lamps tell a story not only of technical excellence but also of human endurance: of divers suspended in darkness, working by the dim halo of a Siebe Gorman lamp to restore or defend the nation’s fleet.
Underwater Welding & Engineering
Among the rarer and more striking pieces in our collection is the Early 20th Century Siebe Gorman Underwater Welding Shield - a copper and brass masterpiece of industrial design. With its spring-mounted protective plate and adaptable fittings, it allowed divers to weld, cut, and repair underwater with unprecedented safety.
Siebe Gorman’s engineering brilliance extended well beyond diving suits and helmets; their innovations supported naval construction, offshore exploration, and the dawn of subsea industry itself. The welding shield stands as a symbol of that versatility - where precision craftsmanship met the unforgiving environment of the deep.
A Glimpse from the East — The Russian Diver’s Torch Set
Contrasting the British tradition, our Cased Russian Diver’s Torch Set introduces a rare Cold War perspective. Compact, functional, and distinctly utilitarian, it reflects Soviet-era design philosophies - rugged and purpose-built. The inclusion of spare glass and accessories demonstrates the torch’s professional pedigree, echoing a time when both East and West were racing to conquer the same underwater frontier.
The Heinke Heritage
The story of British diving would be incomplete without mentioning C.E. Heinke & Co., Siebe Gorman’s early rival and eventual partner. Their combined expertise produced some of the most refined mid-century diving knives.
The Siebe-Heinke Swimmer’s Knife (1960s), with its sleek double-edged blade - one serrated, one smooth - embodies that union of precision and practicality. Marked “Siebe Gorman” and measuring 11 inches overall, it bridges the gap between traditional deep-sea diving tools and the emerging era of lightweight scuba and naval swimmer equipment.
Surface Support - The Royal Navy Steward Ships Diver’s Jacket
Finally, our 1970s Royal Navy Steward Ships Diver’s Jacket offers a human connection to the stories behind the steel and brass. This black service jacket, adorned with gold bullion insignia - the diver’s helmet and six-pointed steward’s star - once belonged to R. Nicholas, proudly stamped inside the collar.
Such garments represent the discipline and dedication of naval divers, the unseen professionals maintaining fleets and fortifications across the globe. Lightly worn but rich in heritage, this piece rounds off the collection with a personal touch from the surface crew who made underwater work possible.
Walking the Ocean Floor - Diving Helmets and Boots
Every diver’s journey begins and ends with the two most iconic elements of the trade: the helmet and the boots. These pieces not only grounded the diver but defined the visual identity of underwater exploration.
1930s Siebe Gorman Diving Boots
This pair of 1930s Siebe Gorman diving boots represents the foundation — quite literally — of early deep-sea operations. Constructed from heavy leather with solid lead soles, they anchored divers securely to the seabed, countering buoyancy from their air-filled suits.
Designed for stability, safety, and precision, these boots capture the tactile essence of the interwar period’s “Standard Dress” diving. Their patina tells of service in murky harbours and coastal repair sites — a true emblem of British maritime history.
Russian 3-Bolt Diving Helmets (1970 & 1974)
Balancing British ingenuity with Soviet strength, our Russian copper 3-bolt diving helmets, dated 1970 and 1974, illustrate a different approach to underwater engineering.
The three-bolt system, a hallmark of Russian design, provided a secure yet simplified seal for professional divers working in challenging environments. Sturdy, practical, and unmistakably industrial, these helmets were fixtures of Cold War naval and salvage operations.
While Siebe Gorman perfected the elegant twelve-bolt standard, Soviet craftsmen built with function foremost - favouring resilience over refinement. Together, these helmets and boots trace an unbroken lineage from the dawn of standard diving to the modern era, uniting East and West beneath the same ocean.
From the polished brass of Siebe Gorman’s pre-war designs to the industrial copper of Soviet diving helmets, this collection charts the evolution of underwater exploration over nearly half a century.
Each knife, lamp, torch, helmet, and jacket tells a story of courage, precision, and human determination - of men who ventured into darkness armed only with the tools of their trade and the trust of their fellow crew.
Whether you’re a collector, historian, or simply captivated by maritime heritage, these artefacts offer a rare opportunity to hold a fragment of that world - when craftsmanship met courage, and adventure lay waiting just beneath the waves.