fast

Train with gloves before doing this, i have practised in my sit on top kayak for safety. I have tested what i believe are important at sea..Good luck and remember the Swiss Army Knives are made in the tradition and never for violence!

Update

If you look at the demonstration it is important that you are careful and use protection before you try. 

I know what it can take this blade. This blade has been tested on different types of rope much better than this on the videos. On many materials and on wood. All parts on this New Ranger has been tested rather hard. Remember that a clean and sharp knife is much safer than a dirty and dull one.

In most cases force are never needed on knives.

I am a big fan of blades that can be opened with one hand and with a locking mechanism. In some situations a folding knife with quality can be a better choice than a fixed blade knife. A folding knife can be carried in pouch or with a clip. In most cases a fixed blade would be better. I recommend reading my pages on rescue blades. The designated rescue blade would have a special purpose tip. An experienced person can get by with a plain edge Wenger SAK with the regular blade. In one of the videos you see that I fold layers of rope and the edge struggle some and force is needed if this is going to be cut fast. A serrated edge will outperform a plain edge some times. A SAK is an excellent knife for safety because you got some additional functions. The wood saw will cut any rope. Today there are many SAKs with serrated edge so it is no problem either. Please read my rescue blades pages!

The Wenger knife is opposite in philosophy than any illegal knife, it is made in the tradition. It depends on training with a Wenger one hand opening knife and how fast you are. In most situations speed is not needed but rather a evaluative mind instead.