Above is my Rough Rider Marlin Spike knife in White Smooth Bone The Scrimshaw work was done by TX Force O'Brien.  The scene is the Mermaid of Warsaw. (more on that knife later!)

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I think it is the idea of traveling around the globe is what brings a certain mystique to the sailing knife. When I come across an old sailing knife I try to imagine who might have used it, where they may have gone, what they may have been through. When getting a new one I wonder where it may go, what it might be called upon to do and how other like-minded souls will put it through its paces and test the steel of its blade and spike. The sailing knife just seems to naturally exude adventure and daring unlike that of any other knife.

What is a sailing knife? It is a knife designed for use onboard a boat or ship, especially a sailing vessel; with a primary purpose to cut line, untie knots or any other day to day job while at sea. Most people are familiar with the Marlin Spike knife or the folding riggers but there are several other knives that were made for use on board boats and ships or by people who spend their lives on or around a body of water. The sailing knife goes by several names, some you may have heard, while others may seem obscure.

Most of the modern folding sailing knives, often called a marlin spike knife, can trace their roots back to the British Pattern 6353/1905 clasp knife that was adopted for service use in 1905. This was a large frame (almost 5 inches/ 120 millimeter) knife with a large spear blade, small punch and very intimidating marlin spike. Surprisingly the knife was used by all branches of the British military on land, sea, and later air!

The 6353/1905 pattern knife is itself similar to early rigging knives used in the 19th century.  A smaller frame pattern which has become a standard pattern used by many American companies is a variation of this 6353/1905 that was adopted for American Maritime service in 1942.  It has changed very little since the adoption. Still other versions were adapted and modified for the civilian market.   Over time new steels were introduced and ergonomics and the sailor’s needs further tweaked designs.

Despite the adaptions one thing remains universal with most of the folding marlin spike knives; the familiar Z pattern the knife make when the main blade and marlin spike are moved to the half open position. And while some companies continue to churn out the tried and true traditional patterns, other companies do nothing but try to perfect the perfect sailing knife!

Let’s see some sailing knives!  It doesn’t matter if they are folding or fixed, with or without the Marlin Spike.  If you have a knife that was made for use at sea, show it off!