Are you referring to the curved item here on my MS 30 Pilot II? If so, I am unsure who made it, or if a 30 Pilot II console is the same dimensions as yours. With Mainship now out of business and Marlowe who bought the name only claims to have zero information on Mainships built before that acquisition, you will have to rely on somebody here coming up with a manufacturer for you. failing that, maybe a pattern could be traced onto butcher paper from an existing shield, but bending it properly would probably have to be done by a professional on board the boat.
FROLIC (2005 MainShip 30 Pilot II)
Panama City area