Royal Yacht Shoulder Title Questions?

[sailorbear]

Hi all, There must be some former "Royal Yachtsmen" on here or people with an in-depth knowledge of Royal Yacht insignia?

I have a collection of Royal Yacht shoulder titles and wish to expand my knowledge of them, so here goes:

I know the blue on white titles were worn on the centre chest of the white front by naval ratings and on the shoulder of the tropical jumper, but was it also worn on the stone shirt by Royal Marines?

The Red on Navy Blue title. On what was it worn and by who?

Gold Bullion on Navy Blue title. I've seen it worn by Royal Marine Bandsmen on their blue's but was it worn by naval ratings with No 1's or did they only where the white on navy blue badges?

I've seen Royal Marine Bandsmen wearing Tropical stone or khaki drill dress, was there a Royal Yacht Shoulder title for this dress?

Did Royal Marine Commandos serve onboard the Royal Yacht as well as Royal Marine Bandsmen, did they where jumper order with lovats or lightweight trousers, what would they where on their jumpers?

There is the Gold on Green for the RM lovat tunic, but is there a Gold on Red title for RM Mess Dress? or small gold on navy blue for RN personnel?

Lastly, did Royal Navy Officers onboard wear any distinguishing insignia?

Regards

Tony