I do think that may be it. It has a center console and a inboard so maybe thanks for the guess. Soon I'll be able to confirm. I'm actually in to sailing even though I'm used to a Morgan and a small trampoline catamaran in the gulf. I can't wait to get back at it and do some true traveling.
I just looks at the specs on sailboatdata and if it is an Irwin 10/4 she seems to be sturdy and would be good for what you intend since with the board up she'll have shallow draft.
If you mean that it has a center cockpit then it might be the Bombay Dawson 26 which is a bit lighter.
I've never seen one in person but I would never look a gift horse in the mouth.
Thanks for your service by the way.