Designing an Irish coastal-defense battleship

What would an Irish battleship look like, and where would Ireland buy it?

Probably a British-built coastal-defense ship, perhaps a reduced Nelson-like design, if treaty and political conditions allowed it at all.

Ireland's likely mission would have been coastal defense rather than blue-water battlefleet operations. Its interwar constitutional relationship with Britain also points toward a British design rather than an American purchase. A reduced Nelson-like ship could have replaced some fixed coastal fortifications. Such a project would require a looser Washington treaty regime and enough political independence to justify an expensive national capital ship. The strategic case remains doubtful because smaller submarines, patrol craft, or shore defenses might protect Irish approaches more economically.