I was in some early meetings at Kongsberg when this missile was still being initially planned out and the NSM stood for "New Surface Missile". Raytheon wasn't, to my knowledge, involved at that point.
What I remember more than anything is that Kongsberg HQ is at the bottom of a large hill and when it was time to leave the Norwegian Navy decided to take public transport home and the last bus was coming so they said "Quick! We must run! We'll barely make it!" and we ran from the bottom of that hill to the top and then a quarter mile (give or take) to the bus stop.
Once we got there, out of breath and sweating, I learned two things. First, it wasn't the last bus, there's one every 15 minutes or so. And second, Norwegian naval officers can be real dicks! :-)
FWIW, Kongsberg used to be the name of a standard whaling harpoon gun.