Not only is the Kelvin Knot uncommon and sophisticated for those in the sailing community. But it's also a knot that is easy to learn and can be created in no time. Here are a few different steps on how to tie a Kelvin Knot.
Tie your tie so that the seam of the thick end is on your left. Hang the thick end two to three inches lower than where you want to complete the tie and then loop it up and around, slipping it behind its entire length. Cross the thick part underneath the thin leather cord, then take the thick one in front of your chin. Bring it over in an X and place it behind your neck. Wrap around the thin end and go under from left to right overtop your initial X (coming through underneath).
Take your big cord across in front of you horizontally from right to left. Then, take a finger under this horizontal band next to your face and bring that cord around the back of your collar. Now put your thick piece under this loop to end up lying underneath that part!
Bring the thick end of your tie through the horizontal loop, and then move it around until you have it pass neatly through the vertical part. Then snug down your knot securely to bring the two pieces together. Tighten your tie by grasping the narrow end in one hand and pulling on the knot with the other.