Well you make a very good first impression! Well done. I always found Vietnam/China to be exceptionally photogenic, though personally I think I might have framed it with less foreground and more space above the tree. But generally I hate when people say things like that so I'll shut up and just say welcome to the forum.
P.S. Although it isn't strictly B&W the very muted colors fit the thread.
Excellent set! Great tones and compositions. If I had to choose just one of the three, I'd likely pick number 1 but I like them all.
I think number 2 might work slightly better in landscape orientation because of the side-on position of the boat. From a strictly minimalist point of view, I think the third object in number 3 (piece of driftwood?) is unnecessary, although its diagonal position in relation to the other two elements forming a line from the bottom left of the picture to the upper right is excellent. The monochromatic sepia (copper?) toning works well for me. I would personally leave the negative space as it is. With everything said and done, though, all three are excellent photographs that you should be proud to print and hang on your wall. Excellent work on all three.