You say"I think there are a few 11 mtr Humbers one of which is called the Corryveckin which can be hired out of N.Ireland or Scotland for a trip. Think I read in Rib Int, Also think same boat is in the first few pages of the RIb Int Price book."
Correct there are a number of 11 metre ribs which do the trip. All the ones I know are Redbays.
See the links page on www.Redbayboats.com
, for details of some of the charter operators that cover the area.
The original Corryvreckan was the original Redbay 11m demonstrator and was owned by Mr Redbay himself, Mr Tom McLaughlin. It is currently for sale on the Preowned section of the Redbay site and now goes under the name of Castor.
The current Coryvreckan is also an 11metre redbay demonstrator and details of her can be found in www.redbayboats.com
Look in the news Section.
If you join in the trip I suspect there will be many other Redbays on view.