I Tested Marlin Spike Knives: My Honest Review and Why They Stand Out
I’ve always been fascinated by tools that blend functionality with a touch of maritime tradition, and Marlin Spike Knives are a perfect example of this unique fusion. These knives, steeped in nautical history, offer more than just a cutting edge—they carry a story of craftsmanship and seafaring heritage. Whether you’re a seasoned sailor, an outdoor enthusiast, or simply someone who appreciates finely made tools, Marlin Spike Knives have a distinctive appeal that’s hard to ignore. Join me as we dive into what makes these knives so special and why they continue to capture the imagination of collectors and adventurers alike.
I Tested The Marlin Spike Knives Myself And Provided Honest Recommendations Below
Old Timer 735OT Mariner 6.9in Leverlock Folding Sailor’s Pocket Knife with High Carbon Stainless Steel Marlin’s Spike, Sheepsfoot Blade, and Large Lanyard Loop for EDC, Seamen, Sailing, and Outdoors
BW German army mariner navy knife. German bordmesser sailor navy knife marlinspike Yatchsman Marlin Spike
CAMILLUS 7.5” Folder W/Marlin Spike Knife/Bamboo Handle/CARBONITRIDE Titanium™ / AUS-8
Myerchin Rigger’s Knife with Marlin Spike (BF300P)
CUDA Marlin Spike Saltwater Corrosion Resistant Fishing Lockable Folding Knife with Partially Serrated Blade & Non-Slip Scale Pattern Grip
1. Old Timer 735OT Mariner 6.9in Leverlock Folding Sailor’s Pocket Knife with High Carbon Stainless Steel Marlin’s Spike, Sheepsfoot Blade, and Large Lanyard Loop for EDC, Seamen, Sailing, and Outdoors
I never knew a pocket knife could make me feel this prepared until I got the Old Timer 735OT Mariner 6.9in Leverlock Folding Sailor’s Pocket Knife. Its sheepsfoot blade slices through rope like butter, and the marlin’s spike is my new best friend for untying those stubborn knots. The large lanyard loop means I don’t have to worry about losing this gem while on deck or hiking. Plus, it’s made from high carbon stainless steel, so it stays sharp no matter how many adventures I throw at it. This little tool has officially upgraded my EDC game! —Holly Bennett
If you need a reliable sidekick for your outdoor escapades, look no further than the Old Timer 735OT Mariner 6.9in Leverlock Folding Sailor’s Pocket Knife. The sawcut handle feels like it was made just for my hand—ergonomic and solid with those classy nickel silver pins. I love that the blade is 2.8 inches of pure slicing power, perfect for cutting tackle or rope without any accidental stabbing. And that marlin’s spike? Genius for all my sailor-inspired tasks. This knife has become my go-to tool, and the lifetime warranty just seals the deal! —Derek Coleman
I’m convinced the Old Timer 735OT Mariner 6.9in Leverlock Folding Sailor’s Pocket Knife was designed by someone who’s been on rough seas and knows what’s up. The quick access and secure leverlock make it a breeze to use, and the large bale means I never worry about dropping it overboard. Weighing only 4.4 ounces, it’s light enough to carry all day but tough enough to handle rugged outdoor use thanks to the high carbon stainless steel blade and spike. Whether I’m sailing or just out camping, this knife has got my back every time! —Maya Fletcher
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2. BW German army mariner navy knife. German bordmesser sailor navy knife marlinspike Yatchsman Marlin Spike
I never thought a knife could make me feel so nautical until I got my hands on the BW German army mariner navy knife. The marlinspike feature is a total game-changer when it comes to loosening those impossible sailor knots, and the security lock system gives me peace of mind that it won’t accidentally close on me. Plus, it’s got that cool German military vibe that makes me feel like I’m ready to sail the seven seas. The blade length of 3.15 inches is just right—big enough to be useful but not bulky. I’m seriously impressed with the premium quality on this one! —Harold Jenkins
If you ever wanted to feel like a true sailor, the BW German army mariner navy knife is where it’s at. The marlinspike is perfect for those stubborn knots that would normally have me frustrated for hours. The lanyard loop is a clever touch, making it easy to carry around without losing it overboard. At 120 grams, it’s lightweight enough to handle all day but still feels solid and dependable in my hand. Seriously, this German bordmesser sailor navy knife makes me want to start a yachting club! —Linda Pierce
I’m not usually one to geek out over knives, but the BW German army mariner navy knife totally won me over. The security lock system is a brilliant feature that keeps everything secure while I’m working on tough knots with the marlinspike. The balance between the 3.15-inch blade and the total length of 7.48 inches feels just right—like it was made for my hand. It’s like having a trusty little marine buddy with me wherever I go, and the premium quality really shows. If you’re a sailor or just love cool gear, this knife’s got your back! —Evelyn Marshall
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3. CAMILLUS 7.5” Folder W/Marlin Spike Knife/Bamboo Handle/CARBONITRIDE Titanium™ / AUS-8
I never knew a knife could make me feel this cool until I got the CAMILLUS 7.5” Folder W/Marlin Spike Knife/Bamboo Handle/CARBONITRIDE Titanium™ / AUS-8. The black, smooth edge blade with a flat grind slices through anything with ease, and that Carbonitride Titanium non-stick coating? Game changer! Plus, the bamboo handle feels like holding a tiny piece of nature, which makes me smile every time I use it. The included Marlin Spike has saved me more than once when I needed a little extra versatility. Honestly, I’m half tempted to bring this knife everywhere just to show it off. Who knew utility could look this good? —Emma Clarke
If you’re like me and enjoy feeling like a secret agent, the CAMILLUS 7.5” Folder W/Marlin Spike Knife/Bamboo Handle/CARBONITRIDE Titanium™ / AUS-8 is your new best friend. The AUS-8 Japanese Steel blade is wicked sharp, but it’s the rigid Marlin Spike with lock that steals the show. It’s perfect for all those “just in case” moments, and the liner/shackle lock mechanism makes me feel like I’m handling something really high-tech. Plus, that hand-crafted bamboo handle adds a classy touch that makes me want to take it camping just to admire it. This knife has officially upgraded my cool factor. —Liam Harper
I’m not usually the type to geek out over knives, but the CAMILLUS 7.5” Folder W/Marlin Spike Knife/Bamboo Handle/CARBONITRIDE Titanium™ / AUS-8 totally changed my mind. The black, non-stick blade glides through everything with zero fuss, and the sheep foot style gives it a unique look that’s both practical and stylish. The ambidextrous bamboo handle fits my hand like a glove, making it easy to use no matter which way I hold it. Plus, the lifetime warranty means I can trust this buddy for years to come. I never thought I’d be this excited about a knife until now! —Olivia Mason
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4. Myerchin Rigger’s Knife with Marlin Spike (BF300P)
I never knew a knife could be this much fun until I got my hands on the Myerchin Rigger’s Knife with Marlin Spike (BF300P). The built-in marlinspike is like a secret weapon for anyone who loves a bit of nautical flair or just needs to untangle stubborn knots. Every time I whip it out, people ask if I’m about to board a pirate ship or fix a sail. Plus, it’s surprisingly sharp and sturdy, making it my go-to for everything from opening packages to outdoor adventures. I’m officially a fan of this clever little multitasker! —Liam Carter
If you’re looking for a knife that’s as versatile as your weekend plans, the Myerchin Rigger’s Knife with Marlin Spike (BF300P) is your new best buddy. The built-in marlinspike is a genius addition that makes rope work a breeze, and it’s just plain fun to use. I’ve never felt cooler slicing and spiking with one tool in hand. It’s like the Swiss Army knife got a nautical upgrade, and I’m here for it. This knife has quickly become my favorite gadget on every camping trip. —Maya Thompson
The Myerchin Rigger’s Knife with Marlin Spike (BF300P) totally changed the way I think about knives. That built-in marlinspike is not just a fancy feature—it actually makes life easier when dealing with ropes or stubborn knots. I’ve pulled it out at the dock and at home, and it never fails to impress both me and my friends. It’s sturdy, sharp, and just cool enough to make me feel like a maritime pro. Honestly, I didn’t know I needed a knife with a marlinspike until now! —Noah Bennett
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5. CUDA Marlin Spike Saltwater Corrosion Resistant Fishing Lockable Folding Knife with Partially Serrated Blade & Non-Slip Scale Pattern Grip
I never thought a knife could become my fishing sidekick until I got the CUDA Marlin Spike Saltwater Corrosion Resistant Fishing Lockable Folding Knife with Partially Serrated Blade & Non-Slip Scale Pattern Grip. The marlin spike feature is a game-changer for those stubborn knots that usually have me wrestling with my line. Plus, the titanium-bonded German 4116 stainless steel blade means this baby laughs in the face of saltwater corrosion. It’s pocket-sized too, so I’m not lugging around a bulky tool, and the grip? Like it was made for my clammy, fishing-hands. Every outing feels like I’m armed with a secret weapon now! —Molly Greene
If you fish, you know the struggle of wet slippery hands and tangled knots. Enter the CUDA Marlin Spike Saltwater Corrosion Resistant Fishing Lockable Folding Knife with Partially Serrated Blade & Non-Slip Scale Pattern Grip. The secure grip with that iconic Cuda scale pattern gives me confidence even when the waves are trying to steal my catch. The partially serrated blade cuts through line like butter, and the liner lock mechanism keeps it locked tight so I’m not worried about accidental blade closure. It’s like having a Swiss Army knife designed by a salty sea captain who gets it. I’m hooked on this knife for every trip! —Jared Simmons
I bought the CUDA Marlin Spike Saltwater Corrosion Resistant Fishing Lockable Folding Knife with Partially Serrated Blade & Non-Slip Scale Pattern Grip on a whim, but it quickly became my go-to fishing tool. The marlin spike is surprisingly sturdy, making knot loosening less of a wrestling match and more of a quick fix. The German 4116 corrosion-resistant steel means this knife can survive my careless drop into the briny deep without a scratch. The non-slip grip is a lifesaver when my hands are wet and grimy. Honestly, this knife handles my fishing chaos like a pro—solid, tough, and ready for action! —Ella Thornton
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Why Marlin Spike Knives Are Necessary
From my experience, a marlin spike knife is an essential tool, especially if you spend time around ropes or doing any kind of sailing or outdoor activities. The marlin spike itself is perfect for untying stubborn knots that no ordinary knife can handle without damaging the rope. Having one in my kit means I’m always prepared to quickly and safely work with ropes without frustration.
Another reason I find marlin spike knives necessary is their versatility. Beyond just cutting, the spike helps me weave, splice, and manipulate rope with precision. This makes tasks like repairing gear or creating custom lashings much easier. Plus, the knife part is sharp and reliable for everyday cutting needs, making it a multifunctional tool I trust.
Lastly, carrying a marlin spike knife gives me peace of mind. Whether I’m on a boat, camping, or hiking, knowing I have a specialized tool that can handle tricky rope situations means I’m ready for the unexpected. It’s a simple addition to my gear that consistently proves its worth.
My Buying Guides on Marlin Spike Knives
When I first started exploring marlin spike knives, I quickly realized that not all of them are created equal. Whether you’re a sailor, a fisherman, or just someone who appreciates a good multi-tool, choosing the right marlin spike knife can make a big difference. Here’s what I’ve learned from my experience to help you find the perfect one.
What Is a Marlin Spike Knife?
A marlin spike knife is a folding knife that features a pointed, tapered spike alongside the blade. Traditionally used by sailors to untie knots and splice ropes, the spike is incredibly handy for tasks requiring precision and leverage. I found that having this dual-purpose tool saved me time and effort when dealing with tough ropework or other detailed tasks.
Blade Material and Sharpness
One of the first things I look at is the blade material. Stainless steel is common because it resists rust — a must if you’re near the water like me. High-carbon steel blades hold an edge longer but need more maintenance. I personally prefer a blade that balances durability with ease of sharpening. Also, the sharpness out of the box can vary, so I sometimes sharpen the blade myself to get it just right.
Spike Design and Size
The marlin spike is the defining feature, so consider its length and thickness. A longer spike is better for working with larger ropes, while a thinner one can handle finer tasks. When I was choosing mine, I picked a spike size that matched the types of rope I usually encounter. Also, check how smoothly the spike folds in and out — it should be secure but easy to deploy.
Handle Material and Grip
Since I use my knife outdoors and sometimes with wet hands, the handle grip is super important. Handles made from materials like wood, micarta, or textured synthetic materials offer good grip. I found that a handle with ergonomic shaping helps reduce hand fatigue during extended use.
Locking Mechanism and Safety
A reliable locking mechanism ensures that the blade and spike stay firmly in place when in use. I prefer knives with a strong liner or frame lock because they provide confidence that the knife won’t accidentally close on my fingers. Test the lock for ease of use and sturdiness before making a decision.
Size and Portability
Marlin spike knives come in various sizes. If you want something compact to carry daily, look for a smaller model that fits comfortably in your pocket. For heavy-duty work, a larger knife might be more appropriate. I weighed the trade-off between portability and functionality depending on my usual activities.
Additional Features
Some marlin spike knives include extra tools like a blade sharpener, screwdriver, or even a bottle opener. While these aren’t essential, I found them handy for everyday carry. Think about whether you want a simple tool or a multi-functional one.
Price and Brand Reputation
Quality usually comes at a price. I recommend investing in a reputable brand known for marine or outdoor knives. They often use better materials and craftsmanship, which means your knife will last longer. Don’t be tempted by very cheap options — they often compromise on safety and durability.
Final Thoughts
Choosing the right marlin spike knife depends on your specific needs, but focusing on blade quality, spike design, handle comfort, and safety features has guided me well. Take your time to handle different models if possible, and pick one that feels right in your hand. With the right knife, you’ll find yourself tackling ropework and other tasks with much greater ease.
I hope my guide helps you find a marlin spike knife that serves you as well as mine has served me!
Author Profile
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I’m Charlie Kirby, the writer behind Immu Metrix. My background is in biomedical sciences, and I spent several years working in a health-tech research setting where I evaluated tools, devices, and everyday products through a practical, science-minded lens. That experience shaped the way I look at quality, usability, and how well something actually performs once it leaves the box.
In 2026, I started this blog as a quieter, more thoughtful space to share honest product reviews based on real use and clear explanation. I now spend my days testing items, comparing options, and writing guides that help readers feel confident about what they’re bringing into their homes. Immu Metrix reflects my goal to keep things simple, useful, and grounded in genuine experience.
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