I have three "navy knives" or "rope knives," but not so much for use basically, they offer a single cutting edge and that's it. My reasons for having them at all are for their historical interest. (I once bought a new sailor knife with marlinspike, just out of interest and ended up giving to a longtime friend who actually owns a sailboat. Figured he'd have more use than I.) Of the three navy knives I have, one's a Camillus WW2 lifeboat knife, and that's the one I like best. Roughly 75 years old, sharp as all get out, and really simple and easy to open. It's great for slicing and cutting down cardboard boxes. Not my image, but from a BF thread: Another is a little one, 3-1/4" long when folded, with plastic scales with a wood-grain pattern cast into them and a small bail. The maker's name is ground off, but "Made in U.S.A." is just visible. [Edit: Some checking around online turned up a Klein knife with plastic scales in the same wood-grain pattern and the EZ-open notch, which mine also has. So I'm calling it a Klein for now.] The third is a Schrade Walden #163, which has smooth wood scales, no bail or even a lanyard hole, a great arc of a shape, and "Powell River" stamped into the scale on one side. Powell River is a pulp-and-paper city in SW British Columbia in Canada. There's a BF thread here on the knife, and here's an image (not mine) from another BF thread: What I'd love to get for the history is one of the early 19th century rope knives with a stag handle that turn up on eBay from time to time, each going for $200+. From a thread over on Allaboutpocketnkives: Oh, well, the WW2 Camillus is good enough!