Mrs. Grocer and I had been over to Largs Yacht Haven on Wednesday (nice afternoon, bit misty in Hunterston Channel [JK: we need an emoticon for "can't see a flipping thing" or to quote the battle cry of the pigmy warriors, "We're the F'kawi"]; nice chap in LYH gave us a cheery welcome ("Berth Foxtrot niner, make yourselves comfy") and
a good price for winter storage.
Anyway, on the way home to Arran we spotted a motor launch. Between us and the sun, so it looked dark grey/black; about 45' or so. She was moving from west to east, we were heading roughly (I only do roughly) SW. After a minute or so it became apparent from the steady bearing that a risk of collision existed. So, with us seeing the other vessel's port side, I suggested to the helm that she (yes, Mrs. G. can drive too) might like to turn smartly to starboard (early and obvious, but that's me all over) and pass astern of the launch thingy. Whereupon launch thingy turns through 180°, which completely upsets my applecart. We have now become the stand on vessel, but are heading away from dinner. This is Not A Good Thing, because I am peckish. So we turn to port, back towards our intended destination.
Now I'd previously clocked the sub (hunter/killer, not a V-class) about four miles off, near the measured distance off Arran. But as the lighting on the launch changed, it became apparent that it wasn't dark grey at all. It was covered in yellow and blue checkerboard stuff. Oops...
They might have said something
Anyway, the question of VHF etiquette - how would you hail the launch if you felt it to be necessary?
"Motor launch east of Arran (x3)" is a bit vague.
So how would "MOD Plod, MOD Plod, MOD Plod" go down...