Third but not least , look at the Tanto knife



It is a fighting knife, so is this ( 45 degree chisel) design for the fighting purpose? There are other combat knives without this feature

Any ideas and insights ?
Thanks.

Form follows function.
The tanto knife supposedly is better for stabbing you with.
Blades like the sheepsfoot can be better for harvesting (think sickle like)
Serrations have their champions and their detractors. I would generally avoid serations in a bushcraft knive, but would consider for something like duty work.

A sheepsfoot blade was also preferred by past generations of tall ship sailors. These men were often barefoot and a sheepsfoot blade, if dropped, was less likely to stick into their foot. Tantos are meant more for stabbing, however a straight tanto, as opposed to a curved, was meant to make throat cutting easier, while the curved blades are better for slashing.

The only place I've found I prefer a serrated edge is when cutting something like rope. Even for this an inch or so near the joint is sufficient. Everywhere else they either aren't a help or get in the way. Ymmv.

Thanks everyone
I already feel better educated about knives

At last , I found a knife that looks like what I have mentioned in the first post.
It is the Wharncliffe blade



From what I have read, it is mainly used to cut line and seems to be the last choice in my case.

The Tanto design, however, has a potential for a survival knife. While I am not looking forward at stabbing a grizzly with it, I think it can be a good tool for diggging in the ground if your are in an emergency. The tip is less likely to break with this design. Plus, if the straight edge is meant to cut throats, then it is great for cutting game meat. It may not be so great for skinning though.

I agree about the serration. Most serrated bladdes I use around work and home (opening boxes, cutting cardboard and such), and for most of these jobs a full serrated blade is needed (not an inch or two). Even outdoors, if you have to use a serrated blade as a saw, two inches of serration won't help you much.

Now, another question about short-wide blades. What are they used for? I have seen one and like it very much but have to learn its ups and downs before making decisions.

It looks like this