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US Navy Mark 1 Deck Knife

since 1942

Genuine US Navy Mark 1 Deck Knife


Providence, Rhode Island
Made in USA Since 1942
Lifetime Warranty

At the onset of World War II, the Colonial Knife Co. (Providence, R.I.) was commissioned by the U.S. Navy to manufacture a freshly configured Deck Knife which was to become the standard issue for sailors in both the Atlantic and Pacific fleets. 

Although similar to other designs of that era, the new Mark 1 was specifically created for naval utility and multiple tasks aboard the ship - especially during wartime. These functions included material handling (munitions, dunnage, etc), ropes and rigging as well as self-defense, survival, medical and rescue ops:

  • Hardened AISI 1075 steel for superior edge keeping and durability
  • Non-reflective, Parkerized "blackout" finish blade
  • Razor sharp scalpel tip, optimized for slicing and cutting
  • Molded polymer handle (scale) for improved non-slip grip
  • Ability to be boiled for emergency sterilization/field surgery
  • Secure scabbard (sheath) with lanyard/leg strap
"Today after 80+ years of production, the Mark 1 remains a very solid and useful knife, it is not just for show. The "blackout blade" is non-reflective, specially hardened hi-carbon steel (AISI-1075/Rockwell C60), extremely sharp right out of the package."

The grooved scale (handle) is molded of Tenite™ polymer, which provides a secure, non-slip grip - even with gloves or when wet. Unlike wood or stacked leather scales, Tenite is rot-proof and the entire knife can be boiled for emergency sterilization/field surgery. 

The scabbard (sheath) is genuine leather with machine stitching plus rivets for durability. Wide loop fits belts up to 3-inches wide. Per military specs, each one is stamped USN and includes a braided lanyard/leg strap. 


  • Overall length: 10 5/8"
  • Blade length: 5 1/8"
  • Blade thickness: .125"
  • Handle Material: Molded Tenite™ Polymer
  • Weight: 4.7 oz
  • Blade finish: non reflective Parkerized
  • Blade material: Hardened AISI 1075 High carbon Steel 
  • Rockwell Hardness: C60
  • Sheath. Leather stamped USN on front
  • Made in Providence, Rhode Island U.S.A.
  • Lifetime Warranty



The Colonial Mark 1 is a superb knife for serious mariners and collectors alike. It is well suited to the following tasks aboard the ship:

Rigging & Splicing, Fast Cutting 
Cargo, Dunnage & Materials Handling
Galley & Quarterdeck - Food & Fish Prep
Survival, Rescue & Self Defense

The scabbard can be worn on the belt, lashed to a harness or bosun's chair, or strapped to the companionway ladder, for quick access to the cockpit and/or galley. 

**THIS KNIFE IS NOT STAINLESS STEEL. It should be expected the blade will develop a weathered patina over time and with use. As with other tools aboard the ship, it can be occasionally wiped down with a light coat of oil to prevent corrosion during long term storage. IF YOU PREFER STAINLESS PLEASE CHECK OUR OTHER KNIFE LISTINGS.

Nicely packed for gift giving or presentation. Includes mimeograph copy of an original 1944 US Navy requisition letter (as pictured), plus care sheet and warranty card. Ships quickly and directly from our Florida stockroom. 

"Splice the Main Brace!..."

Quality, Service & Satisfaction Guaranteed.

Order Handling:  Timely shipment is part of our commitment to you. Online purchases receive immediate confirmation by e-Mail. Seabags and rigging products are normally shipped within 3 business days or less (Mon-Fri, except holidays). Single orders for manufactured items, such as rigging knives and tools, are usually shipped out the next day. Online tracking is provided the same day your order is shipped.

For large quantities or custom project inquiries, or if you need something faster, please e-Mail or call us at 1-800-758-6979.


$99+ FREE USA Shipping & Tracking: Orders over $99, including all bags, are offered with free standard shipping and tracking within the USA. Other options, such as expedited shipping may be available at the checkout page.

Worldwide Shipping: International shipping rates, including service to Canada, are location-based and calculated at the checkout page. Other options, such as expedited shipping, may be available at the checkout page. Please note that any customs fees, duties, etc. are the responsibility of the buyer.


25-Year Seabag Warranty: All SHIPCANVAS seabags and ditty bags include a written 25-Year Warranty which guarantees the quality of our workmanship, as well as the fitness of all hardware and materials used in the bag's construction. Any bag found to be defective within the terms of our Warranty will be repaired or replaced (at our discretion) at no cost to the original Purchaser, except shipping.


+30-Day Returns: M&B SHIPCANVAS CO will accept any item as a return within 30 days of the confirmed delivery date that the item was received. To be eligible for a full refund, the item must be unused and in the same condition that it was received, with tags and packaging intact. We do not charge restock fees on new/unused items.


Secure Payments: We accept Visa, Mastercard, American Express, Discover, and PayPal, as well as Apple Pay and Google (GPay). All payments are collected in USD. Please note that SHIPCANVAS.COM is a secure (SSL) website with 256-bit SSL encryption protocols on our hosted payment gateways. All transactions are processed behind a secure firewall; M&B SHIPCANVAS CO. does not store your credit card information.

Other Questions & Special Requests: If you have a question or special request that has not been addressed here, please eMail or call us at 1-800-758-6979.


101425 Overseas Hwy #264
Key Largo, FL 33037 USA
+1 (305) 396-8535
toll free +1 (800) 758-6979

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