The Nimrod training machine
While 236 OCU was still doing Mk1 training at St Mawgan a small unit was set up at Kinloss to oversee the conversion from Mk1 to Mk2 this was the Nimrod conversion Flight (NCF). The conversion course was 12 weeks.
A subset of the NCF was another small team doing the course design for the long Mk2 OCU course.
At the back end of '82 the first Mk2 long course started in the old 120 sheds on the north side of the field and graduated around April of '83.
Somewhere between '83 and Aug '86 the long course moved back down to St Mawgan.
Round about the back end of '91 it was mooted that the Nimrod OCU moved back up to Kinloss. But GW2 held that back a bit and it finally moved in Sep of '92.
Having set up house in the even older sheds around the old parade square it was transmorgrified into the Nimrod OCU, aka NOCU. Still with me?
With its new name it then moved into the purpose built premises down near the Electronics centre.
Later again it joined the rest of the OCUs in the RAF and became an "R" squadron, No 42 (R) squadron. It kept this final title until the whole shebang was dissolved in '11/'12.
So, finally, I don't think it was EVER the MOCU.
The Ancient Mariner
PS some of the dates are approx but close enough for Gummint work and it does show the sequence.