OzEx - Always a pleasure to debate with you - I know you don't indulge in the invective that too often infests these forums!
Here's where I'm coming from: The only place I could find 185 Kts quoted was in PANS-OPS Table III-1-2. It's under "Max Speeds for missed approach", Category D, Intermediate.
I did say in my post that it was a maximum speed, so the normal meaning of that would be that you can use lower.
I think where you take issue with me is that if it's a maximum, you can't use higher regardless of aircraft category . Yet the max speed for the same phase, for a Cat E aircraft is given as 230kts. So much for the calculated speeds.
Now, "185 kts on the chart". Chart conventions vary. I know Aerad best, and they use 180kts for turning circles on approach charts (including MAP) and that is regardless of category. I've looked in Jepp. but can't find what speed they use. Perhaps someone here could oblige?
But I believe, as conventions vary, and because the speed info is not clearly displayed, that you can't treat chart diagrams as limiting, only performance calculations.
What do you say?