Really like your simple and cool but stylish approach of #155
Unfortunately we're not looking for just a new font (we're pretty happy with the old Logo) but the Problem is often at representations that the Space is Square so our logo is to small when in proportions so we try it to make it more square with a Graphical Element (NOT A PLANE! like some people misinterpreted our ideas)
Your idea #156 creating a higher Logo is cool, but reminds me to much of a sailboat. And most important NS should not be there at all as NS means something we do not want to be associated with for some of our customer base.
Any chance you could add to the #155 or alter #145 with a unique Graphical Element best Example: #73 or a combination of the NS letters that is not obvious but starts playing the mind what the Logo stands for: A perfect Examples for that goal are: #169 #64 #37 #62#63 #35 #36 #33 #34
Thank you for your work so far looking forward to your next entries.