Hallo Clifford,
attached are some photos that might help.
see also this You Tube link for a video of a Solent model in action. Neat 👍


Goodnight from Munich (nearly midnight here!) Doug

Hallo Clifford
Sorry, didn't intend to be rude. 🤔
I truly wondered if it might be Gaelic.
I'll do some research on your query.
Doug

Is stauntobns Irish for stanchions?
I still don't know the measurement but surely one of the Lifeboat buffs does.
Cheers Doug 😎